Answer:
The correct answer is - option B.
Explanation:
Scientific method is the method that is based on sequenced scientific logic based steps to answer questions. Such questions are known as scientific questions that can be answered by the logic and not based on the believes or social norms.
The options provided with the questions are easily answer by the logic and scientific method by the knowledge except the option B that deal with ethical and unethical phenomena which is not depend on scientific knowledge.
Thus, the correct answer is option B.
The question that cannot be answered using the scientific method is 'Why is it unethical to test newly developed drugs in animals?' because it involves ethics, which cannot be scientifically tested.
Explanation:The question that could not be answered using the scientific method is 'Why is it unethical to test newly developed drugs in animals?' This is because ethics involve values and moral reasoning, which cannot be empirically tested or measured in the same way biological processes can be. Scientific methods rely on observation, measurement, and experimentation to test hypotheses about the natural world, and while they can help us understand the effects of drugs on biological systems, they cannot address moral and ethical questions such as the rights and welfare of animals.
To illustrate, questions that could be scientifically investigated include the function of the appendix in human beings and why smokers develop lung cancer more frequently than nonsmokers, as these can be explored via empirical evidence and experimental research. In contrast, why it is so difficult for some individuals to quit smoking could also have a biological basis, but it involves subjective experiences and psychological factors that are not solely within the realm of empirical science.
A scientist compared the genes and proteins from a root cell and a leaf cell of a single apple tree. What will the scientist observe about the cells?
Options:
a) They have different sets of genes but the same set of proteins. (b) They have different sets of genes and different sets of proteins. (c) They have the same set of genes and the same set of proteins. (d) They have the same set of genes but different sets of proteins.
Answer:
d) They have the same set of genes but different sets of proteins
Explanation: Auxins are found in leaves cytokines are found in root tips and shoot tissues.
Jamal has recently noticed that he does not have very much energy. When he goes to the doctor, he is told that his blood sugar, or _____, is low.
Answer: Blood sugar is also called Blood glucose
Explanation:
Hypoglycemia or low blood glucose is a condition when the blood sugar falls below 70mg/DL. It is an harmful condition that makes person weak ,hungry and dizzy. Anyone that experience such except for diabetes patients can take Carbohydrates like crackers, fruit juices.
But for the case of diabetic patients, medication of insulin. Should be given to them if they have been properly diagonised by Doctor.
Answer: blood glucose
Explanation: Blood Glucose is synonymous to blood sugar and low blood sugar is referred to as hypoglycemia.
Specialists who apply their knowledge of physiology, biomechanics, anatomy, and psychology in order to improve movements, working environments, and training programs in the workplace are called_________.A. ergonomists or human factors engineersB. work specialistsC. occupational therapistsD. occupational engineers
Answer:
Ergonomists or human factors engineers.
Explanation:
Egronomics may be defined as the scientific field that includes the interaction of the human psychology with the scientific theory and methods for the well being and overall development of humans.
Egronomists may be defined as the scientists that mainly studies the difefrent factors that affects the human psychology at the work place. The egronomists mainly work to design and evaluation of the different factors that makes the human compatible with their work place.
Thus, the answer is ergonomists.
The mitochondrial DNA sequences of a large extended family were analyzed and compared to a single male in the family. Which of the relatives' mitochondrial DNA should be a match to this person?
Answer:
His sisters son
Explanation:
Mitochondrial DNA are small circular chromosomes found inside the mitochondria. They are passed exclusively from the mother to children through the egg cell therefore it is maternally inherited.
In the given question. Mitochondrial DNA of an extended family was sequenced and compared to a single male.
His sisters son will match because the person and the sister will have similar mitochondria since they have the same mother. The sister will pass it down to her son.
A married couple has 3-year-old twins. They own a dog. The father's mother lives with them. The father is a professor; the mother has resigned from her position as a legal secretary to be the children's primary caregiver. Which type of family does this represent?
Answer:
Extended family
Explanation:
An extended family is a type of family that consists of the father, mother, children and other relatives living in the same household. It goes beyond consisting of just father, mother and children.
The family above consist of the father, mother, children and a grandparent, which makes it a type of extended family. It goes beyond a typical nuclear setting of a family.
The primary function of the glial cells is to:_______.
a. insulate the axon and increase the speed at which neurons convey their message.
b. reduce the speed of neurotransmitters crossing the synaptic gap.
c. bundle the axons of neurons that produce the same neurotransmitters.
d. provide structural support and nutrition to the neuron.
The main functions of glial cells are to insulate neuron axons, which increases the speed of neural messages, and provide structural support and nutrition to neurons. Both option a and option d is correct.
Explanation:The primary function of the glial cells is both to a. insulate the axon and increase the speed at which neurons convey their message and d. provide structural support and nutrition to the neuron. Glial cells wrap around the axons of neurons creating an insulating layer known as myelin sheath, which helps increase the speed of electrical signals aka action potentials along the neuron. Furthermore, they provide vital support and nutrients for the neurons, maintain homeostasis, form myelin, and partake in signal transmission in the nervous system.
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OPTION D.
The primary function of glial cells is to provide structural support and nutrition to the neurons, although they also perform other functions such as insulating axons.
Explanation:The primary function of the glial cells is option d. They provide structural support and nutrition to the neurons. Glial cells make up about 90% of the brain's cells and they are crucial to neuronal health and functioning. They hold the neurons in place, supply nutrients and oxygen to neurons, insulate neurons from each other, and remove dead neurons. The other options listed are either partially correct or incorrect. For instance, some types of glial cells, called oligodendrocytes and Schwann cells, do insulate the axons of neurons (option a), but this is not their only or primary function.
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Explain the difference in generating electricity with a solar thermal power plant versus a solar farm using solar panels with photovoltaic cells.
Marfan syndrome is the result of inheriting a single allele. Individuals with Marfan syndrome are tall and long-limbed, and have both cardiovascular and eye defects. The inheritance of Marfan syndrome is an example of ______. a) a recessive disorder b) pleiotropy c) codominance d) incomplete dominance
Answer:
pleiotropy
Explanation:
When a single gene influences more than one phenotype that is unrelated to each other then this phenomenon is termed as pleiotropy. The gene that causes pleiotropy is called a pleiotropic gene. In the given question, the disease that is Marfan syndrome is occurring due to the inheritance of a single allele that is defective. However, this single gene is affecting various phenotypes such as the length of the limbs, the cardiovascular system and the eyes and all these different characters affected are quite unrelated to each other.Therefore, it can be said that Marfan Syndrome is an example of a pleiotropic condition.In psychology, ________ is a set of statements about the mechanisms underlying a particular behavior, is a hypothetical mechanism used to help explain behavior, and is a way to measure an observable characteristic that serves as a stand-in for something that is not observable.
Answer:
Theory
Explanation:
The theory is referred to the set of documents that are provided for the better understanding of the human emotion, rights, thoughts, and behaviors.
Theory work for two main aspects -
- it must provide or analyze the behaviors
- it must induce hypothesis and predict future behaviors
A theory is a document that gives an explanation about an understanding of the facts. it includes question like why and so. it is a series of documents that present on the wider scale to have been accepted by larger communities.
Final answer:
In psychology, a theory is a well-developed set of ideas that propose an explanation for observed phenomena and includes measurements to test the effects of behaviors. Experiments are used to test hypotheses and determine cause and effect relationships. Hypotheses are tentative explanations for observations that can be scientifically tested.
Explanation:
In psychology, a theory is a set of statements about the mechanisms underlying a particular behavior. It is a hypothetical mechanism used to help explain behavior, and it involves a way to measure an observable characteristic that serves as a stand-in for something that is not observable. This measurement assists in the measurement of the effect that an experience might have.
Psychologists use various research methods to understand and explain behavior and the cognitive and biological processes that underlie it. Methods can include observational techniques, in-depth interviews, and experiments, which are designed to test hypotheses in a controlled setting. These experiments are the only research method that measures cause and effect relationships between variables, aiming to explain how certain factors or events produce outcomes.
The hypothesis in psychological research is a tentative explanation for scientific observations that can be framed in a way that is testable. This is critical as it contributes to the validity, which revolves around the accuracy of a given result in measuring what it is designed to measure. Explaining causal relationships and the mechanisms by which they are mediated can be extrapolated to predict and explain events in new contexts.
The most inclusive level of organization encompasses all regions of Earth's crust, waters, and atmosphere and is called the _____.
Answer:
The most inclusive level of organization is called the Biosphere.
Explanation:
The biological level of organization is organized from the simplest(least inclusive) to the most complex(most inclusive)
The Atom is the simplest unit. Two or more atoms will form a molecule.
The molecules come together to form a cell which is the basic functional unit of life. Cells come together to form tissues then organs and the organ system. Together they make an organism
Populations is formed by a group of the same organisms living in the same area.
Different populations will form a community. The communities together with the environment they live in form an Ecosystem.
Lastly, The Biosphere is the most inclusive and encompasses all ecosystems on Earth
What is the term for the determination of traits by a combination of both genetic and environmental factors, in which a genotype provides a range within which a phenotype may be expressed?
Answer:
multifactorial transmission
Explanation:
It is mostly assumed that one genetic trait is regulated by one gene. However, some genetic traits are controlled by more than one gene. Also, some of these genetic traits are influenced by both genes and abiotic factors such as temperature conditions, diet, lifestyle, etc. These genetic traits are said to be following the multifactorial transmission as they are regulated by more than one controlling factor.
For example, skin color in human beings is regulated by more than one gene. Exposure to light and pollution also affects the skin tone of a person. Being a multifactorial trait, skin color in human beings does not exhibit distinct categories. Rather it exhibits continuous variation and the phenotype ranges from light to very dark with many intermediate categories in between.
In chemiosmosis in mitochondria, protons flow from the intermembrane space into the matrix, whereas in chemiosmosis in chloroplasts, protons flow from
the stroma into the cytosol.
the stroma into the thylakoid space.
the matrix into the stroma.
the thylakoid space to into the stroma.
the intermembrane space into the stroma.
Answer:
The thylakoid space to into the stroma.
Explanation:
Chemiosmosis refers to the process of the synthesis of the chemical called ATP by the osmosis of protons from high concentration to low concentration.
The process of chemiosmosis takes place in both the mitochondria and the chloroplast in which the enzyme ATP synthase is embedded in the inner membrane and the thylakoid membrane respectively.
In Mitochondria the proton flow from the intermembrane space to the matrix side drives the synthesis of ATP whereas in chloroplast the proton flow from the thylakoid space to the stroma drives the synthesis of ATP.
Thus, the selected option is the correct answer.
In chemiosmosis, protons flow from the intermembrane space into the matrix in mitochondria, whereas in chloroplasts, protons flow from the stroma into the thylakoid space.
Explanation:In the process of chemiosmosis in mitochondria and chloroplasts, protons flow across the membrane to facilitate the production of ATP. In mitochondria, protons flow from the intermembrane space into the matrix. Conversely, in chloroplasts, during the process of photosynthesis, protons flow from the stroma into the thylakoid space. This difference is due to the distinctive functions and structures of the mitochondria and chloroplasts.
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Pasteur demonstrated that yeasts and bacteria each produce specific metabolic products such as alcohols and organic acids using the metabolic pathway known as ________
Answer:
fermentation.
Explanation:
Alcohol, C02 and lactic acids are the end products of fermentation. This reaction pathway occur in the cytoplasm of cells in absence of oxygen.
In yeast cells it involved the removal of hydrogen atom from NADH to form NAD, for Glycolysis to continue, so that the 2 ATPs spent for glucose production in glycolysis, could be replaced.
The pyruvate from glycolysis is decarboxylated (removal of CO2 )to Ethanal. The C02 is liberated.The ethanal is reduced to Ethanol by the hydrogen removed from NAD. This is alcoholic fermentation.
Other organisms including man, undergo Latic acid fermentation,where the pyruvate from glycolysis is reduced to lactic acid from the hydrogen removed from NAD.
Louis Pasteur showed that yeasts and bacteria could produce specific metabolic products such as alcohols and organic acids via a metabolic pathway known as fermentation.
Explanation:Scientist Louis Pasteur demonstrated that yeasts and bacteria, two types of microbes, produced specific metabolic products like alcohols and organic acids. They achieved this through a metabolic pathway known as fermentation. For instance, yeasts convert sugar into alcohol and carbon dioxide, a process extensively used in winemaking and beer brewing. Similarly, certain bacteria under anaerobic conditions can create organic acids such as lactic acid.
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Tenrecs, echidnas and hedgehogs are examples of unrelated organisms that have all evolved spines. Explain the advantage of this adaptation to these animals and why might it have evolved?
Answer: The advantages of spines in these unrelated organisms are as follows:
- for escape and defence
- for regulations of body temperature
- for conservation of water
Explanation:
The evolution of spines in Tenrecs, echidnas and hedgehogs represent STRUCTURAL ADAPTATION i.e when a part of the body of a living organism undergoes changes to become structurally adapted to its mode of life.
- The evolved spines in hedgehogs are for physical defence
- in tenrecs, they are for physical defense
Which statement by a staff nurse on the orthopedic floor indicates the need for further staff education?
Answer:
The options showing the different given statements were not provided in this question; however, an orthopaedic nurse receives specialized education and training to care for patients with diseases and disorders of the musculoskeletal system. Therefore, an orthopedic staff nurse is required to have a knowledge of the following:
1. Orthopedic cases and surgical treatments for each.
2. Surgical site care and dressing.
3. Pain management.
4. Intravenous and Intramuscular drug administration.
5. Vital signs check and significant changes.
6. Post-op care of patient.
7. Casting
8. External fixation care
9. Neurovascular status monitoring
10. Traction
Which of the following best explains why a Robertsonian carrier may have no health problems due to his or her chromosome rearrangement?
A.Genes on the lost p arms can be found elsewhere in the genome.
B.There are no genes found on any of the p arms of acrocentric chromosomes.
C.All acrocentric p arms contain the same base sequence.
D.The long q arm chromosome copies the genetic information from the p arms before they are lost.
Answer:
The correct answer is option A.
Explanation:
Robertsonian translocation occurs of 2 acrocentric chromosomes with no problems for the person carrying it in balanced form. In an unbalanced form, it produces chromosome imbalance leads to mental disorder or malformations.
In this translocation p arm or long arm join with other chromosome's long arm, carrier is normal due to the presence of 2 copies of all chromosome arms so there will be all the copies of essential genes.
Thus, the correct answer is - option A.
Final answer:
Roberstonian carriers may not have health issues due to chromosome rearrangements because A. Genes on the lost p arms can be found elsewhere in the genome.
Explanation:
Roberstonian carriers may have no health problems due to their chromosome rearrangement because genes on the lost p arms can be found elsewhere in the genome. In Robertsonian translocations, the acrocentric chromosomes involved connect one long and one very short arm, where the p arm is typically lost. This loss of genetic material from the p arm does not cause health issues because important genes can be present elsewhere in the genome, ensuring normal functionality.
The elevated ridges of tissue on the surface of the cerebral hemispheres are known as __________ while the shallow grooves are termed __________. a. sulci; gyri.b. tracts; ganglia.c. gyri; sulci.d. receptors; effectors.
Answer:
The correct option is c. The elevated ridges of tissue on the surface of the cerebral hemispheres are known as gyri while the shallow grooves are termed sulci.
Explanation:
The brain consists of many elevated ridges of tissue and grooves. Gyri are parts of the brain that are collected in the form of a crease between the grooves of the cortex. On the lateral face (external face) of the cerebral hemiferium. It appears as a wrinkled surface where there are folds (gyri) separated by indentations or shallow grooves (sulci). On this face it is possible to distinguish four large regions or lobes whose names relate to the cranial bones that cover them. They are the lobes: frontal, parietal, temporal and occipital.
The ridges on the surface of the cerebral hemispheres are called 'gyri', whereas the shallow grooves are called 'sulci'. These formations help to increase the surface area of the brain and are used as landmarks to separate it into functional regions.
Explanation:The elevated ridges of tissue on the surface of the cerebral hemispheres are known as gyri, while the shallow grooves are termed sulci. These terms refer to the distinctive pattern on the cerebral cortex of the brain. The gyri (singular: gyrus) refer to bumps or ridges, while the sulci (singular: sulcus) refer to grooves or depressions. These features create the characteristic wrinkled appearance of the brain and help increase the surface area.
The most prominent sulcus is the longitudinal fissure, which separates the brain into two hemispheres: the left hemisphere and the right hemisphere. These gyri and sulci are important landmarks, as they allow for the brain to be separated into functional centers.
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Liver cells manufacture glycoproteins, while adipose cells store fat. Which of the following subcellular structure is likely to be more prominent in liver cells than in adipose cells?
a.nucleus
b.golgi apparatus
c.cytoskeleton
d.plasma membrane
Answer:
Golgi apparatus
Explanation:
Golgi apparatus also called Golgi bodies is a cell organelle whose functions include sorting and processing proteins.
The liver cells will have more of golgi apparatus compared to the adipose cells because they manufacture glycoproteins.
Apart from protein synthesis, the liver cells are involved in the initiation of formation and secretion of bile among other functions.
If you were to suffer a random injury to your brain, why would it be a safe bet that the structure most likely to be damaged would be the cerebral cortex?
Answer: The cerebral cortex, being that it is Tue most active part of the cerebrum and with wide surface area
Explanation:
The cerebral cortex is an ACTIVE OUTER LAYER that covers the entire surface area of the cerebrum, which happens to be the largest part of the brain. Also, the ability of the cerebrum increase as the cerebral cortex becomes more developed.
So due to the protective role and wide surface area of the cerebral cortex, it is definitely the most likely part to suffer random injury.
The cerebral cortex is the most likely structure to be damaged in the event of a random brain injury due to its position and complexity.
Explanation:The cerebral cortex is the outermost layer of the brain and is responsible for many important functions such as perception, thinking, and voluntary movement. It is made up of billions of neurons and is highly interconnected. Due to its location and complexity, it is more vulnerable to injury compared to other brain structures.
When a random injury occurs to the brain, such as through a sudden impact or trauma, the cerebral cortex may be damaged due to its position just beneath the skull. The impact may cause the brain to move forcefully within the skull, leading to contusions or lacerations in the cerebral cortex.
Additionally, since the cerebral cortex plays a crucial role in higher cognitive functions, injuries to this area can result in various impairments such as difficulty with memory, language, or sensory processing.
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What is the term for the pair of thick folds of skin, connective tissue, and adipose tissue that are part of the female external genitalia?
Answer:
labia majora
Explanation:
The labia majora, which is the part of the female external genitalia that extend down from the mons pubis, is a pair of thick, fleshy folds of skin, a connective tissue and adipose tissue, whereas the labia minora are hairless thin cutaneous folds. The thick folds of the labia majora has sweat and oil gland and also fats, while the thin cutaneous folds of the labia minora have no sweat gland or fat, but has oil glands. The labia majora also contain some pubic hair, which is absent in the labia minora.
The most basic or lowest-level need in Maslow's hierarchy of human motives includes the need for a food and drink. b religious fulfillment. c love and friendship. d self-esteem. e achievement.
Answer:
a. food and drink.
Explanation:
Maslow’s hierarchy of needs as represented by a pyramid, has the most fundamental and basic needs placed at the bottom, which are physiological needs. They are followed by safety, love and belonging, esteem, and self-actualization.
Physiological needs include food, drink, shelter. These are needs necessary and essential for physical survival that motivates human behaviors.
Food and drink are the most basic or lowest-level need in Maslow’s hierarchy of human motives .
Final answer:
The lowest-level need in Maslow's hierarchy of human motives is the need for food and drink, which are fundamental physiological needs that must be met before higher-level psychological and social needs.
Explanation:
The most basic or lowest-level need in Maslow's hierarchy of human motives includes the need for food and drink. Maslow's hierarchy is portrayed as a pyramid with several levels of needs. At the base of the pyramid, we find the physiological needs vital for survival, such as nourishment and hydration. As one moves up the pyramid, the needs become more psychological and social, ending with self-actualization. Before higher-level needs like love and friendship or self-esteem can be pursued, these fundamental physiological needs must be fulfilled. This concept shows the progression from basic survival to achieving one's full potential, which is culminated with self-actualization at the top of the pyramid.
Please need help with this ASAP
In which of these scenarios is informed consent of the study’s participants not necessary?
A. if the research uses anonymous questionnaires
B. if the research relates to political subjects
C. if the research uses multiple ethnic groups
D. if the research involves a criminal investigation
Answer:
The correct option is A) if the research uses anonymous questionnaires
Explanation:
For research studies, it is always important that the consent of the participants be taken if they are to be mentioned in the research. Without the consent of a person, a researcher cannot use anything related to that person in his research. However, in scenarios where you have to keep the data anonymous and just depict the results, consent is not necessary. However, one should recognize that apart from anonymous studies, not taking consent of the participants is unethical.
Cardiac tamponade results in ineffective pumping of blood by the heart because the excessive amount of fluid in the pericardial cavity will _________.a. prevent the visceral layer of the serous pericardium from properly surrounding the heart
b. prevent the heart from filling properly with blood
c. prevent proper oxygenation of the blood
d. interfere with the ability of this fluid to lubricate the serous membranes
Answer:
b. prevent the heart from filling properly with blood
Explanation:
The pericardial cavity is the cavity present between the visceral pericardium and the parietal pericardium. It is filled with a fluid called pericardial fluid. In cardiac tamponade, there is an accumulation of excess of the fluid in the pericardial cavity.
The fluid builds up the pressure which in turn compresses the heart. Ventricles of the compressed hearts are not completely filled with blood resulting in reduced cardiac output. Similarly, the return of blood to the heart atria via veins is also reduced in the compressed heart.
Based on the information in the podcast, ocean planets are prime targets in the search for life. However, scientists are also searching Mars for life, even though Mars is not an ocean planet. Why is Mars still considered to be a good candidate in the search for extra terrestrial life? A) Fossil cyanobacteria have been found in rock samples from Mars.B) Martian soil releases carbon dioxide under conditions that could support life.C) Some photos suggest that there are underground stores of water on Mars.D) There are signs that Mars once had liquid water on its surface.
Answer:
The correct answer is D) There are signs that Mars once had liquid water on its surface.
Explanation:
Researchers have not found life, or evidence of life, on Mars yet. This planet is considered to be a good candidate in the search of extraterrestrial life because, even though it is smaller than the earth, it still is a huge planet with high possibilities of life on it.
There is evidence that more than 3.500 million years ago, Mars was a warmer planet with water on its surface. There are, for example, some dry riverbeds that reflect the presence of rivers on the planet´s surface. They believe that Mars once had an atmosphere with CO², but after losing it, the planet became cold and desertic.
Researchers have found subterranean water, which was detected by radar. There is a lake in the martian south pole, 1.5 km under a thick ice layer, that has at least a meter wide, 20 kilometers long, and is surrounded by high ground. They establish that its origin is the melting of the ice. It is very cold and salty, which makes it difficult to find life on it, but the only ecological niche that could exist for life is underground where there is protection from extreme cold and high radiation levels.
The cell membrane is made up of many different kinds of proteins. These proteins can be classified as either peripheral, transmembrane, or lipid-anchored proteins. Regardless of their classification, these proteins all play an important role in the function and integrity of a cell. Which of the following properly describes the function of membrane proteins?
- to combine with a carbohydrate, providing an immune response and/or cell recognition
- to provide structural stability for the cell
- to serve as a channel for the transport of molecules between extracellular and intracellular fluid
- to allow for cell-cell communication
Answer:
Membrane proteins contains a broad range of proteins that are present within or along the cell membrane. They have various functions, but according to the statement the most precise function of cell membrane proteins is to serve as a transport channel.
Explanation:
Proteins are an integral part of cell memebrane. They are transmembrane proteins, integral proteins and peripheral proteins.
All these proteins serve different essential functions for the maintainence of cell and survival of organism.
They act as
1) Membrane receptors
2) Transport proteins
3) Membrane enzymes
Integral membrane proteins are attached within the cell membrane permanently.
Peripheral proteins are attches to the lipid bilayer thorugh integral proteins by covalent hydrostatic and electrostatic forces.
These proteins may be modified by added fatty acids and carbohydrate chains.
Answer: ALL OF THE ABOVE ARE CORRECT
Explanation:
A cell membrane is a collage of different proteins embedded in the fluid matrix of the lipid bilayer.
Major functions of membrane proteins include:
1. INTERCELLULAR JOINING
Proteins on adjacent cells hook together, briefly, for cell interaction/sharing.
2. TRANSPORT
Transport proteins are used in various ways to move substances back and forth across the cell membrane.
3. SIGNAL TRANSDUCTION
Transmission of molecular signals from a cell's exterior to its interior.
4. ENZYMATIC ACTIVITY
When a protein built into the membrane may be an enzyme with its active site exposed to substances in the adjacent solution
5. CELL-CELL RECOGNITION
Cell's ability to distinguish one type of cell from another
When some glycoproteins (proteins bonded to short chains of sugars) serve as identification tags that are specifically recognized by other cells
6. ATTACHMENT TO CYTOSKELETON AND EXTRACELLULAR MATRIX
Maintains cell shape and stabilizes cytoskeleton
Which of the following drugs is most likely to cause psychosis, where a person starts becoming delusional (i.e., having false beliefs), and becomes paranoid?1. Amphetamines 2. Nicotine3. Barbiturates4. Alcohol5. Caffeine
Answer: Amphetamines
Explanation:
Addiction of this drug results in serious types of risks with heavy recreational amphetamine use but it is unlikely to be used for a longer period of time.
Very high dose of this drug can result in the psychosis which rarely occurs in the paranoia and delusions.
Recreational doses can have more side effects on the body of individual and have greater risk on life.
Answer:
The correct answer is A ^_^
Explanation:
A client is having surgical removal of her gallbladder laparoscopically. While dissecting the gallbladder for removal, what type of epithelial tissue will be removed?
Answer:
simple columnar epithelial tissue
Explanation:
The "gallbladder" is a pear-shaped looking organ that lies beneath the liver. Some conditions that may consider a person a candidate for gallbladder removal are: pancreatitis (inflammation of the pancreas), cholecystitis (inflammation of the gallbladder) and biliary dyskinesia (malfunction in the emptying of bile).
In order to remove the gallbladder, the patient will have to undergo "laparoscopy." The epithelial tissue that will be removed is the simple columnar epithelial. The cells in this tissue have "microvilli," like small finger-like projections. This tissue is followed by the connective tissue.
During the surgical removal of the gallbladder, the simple columnar epithelium of the gallbladder mucosa is removed. This is a type of epithelial tissue that covers organs and performs functions such as absorption, transport, and secretion.
Explanation:In the process of a laparoscopic gallbladder removal, the type of epithelial tissue that gets removed is the simple columnar epithelium. This epithelial tissue lines the gallbladder mucosa, which is organized in rugae, similar to those of the stomach. The gallbladder's mucosa absorbs water and ions from bile, thereby concentrating it.
Epithelial tissues like this are essentially large sheets of cells covering all surfaces of the body exposed to the external world and lining the outside of organs. They form much of the glandular tissue of the body and also function in absorption, transport, and secretion. In terms of structure, epithelia composed of a single layer of cells, such as in this case, are referred to as simple epithelia.
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Darin wanted to make amino acids. He took the protein collagen and heated it to the point of denaturation at physiological pH. Will he have amino acids and why?
Answer:
No, because he will not have broken covalent bond.
Explanation:
Denaturation is the process adopted to affect or alter the chemical structure of a protein. This can be done or achieved by heat or addition of acid.
Denaturation can't break the peptide bond of the protein , this means that the , amino acid sequence is unaffected after the process.
Physiological pH is the pH Darin won't be able to have amino acid because the pH at which denaturation was being carried is basic, while the process requires acidic medium.
Collagen is a form of protein that can be found in the body.
Refer to Animation: Base Pairing and Stacking. Which of the following do you think best describes the way that base pairing stabilizes the double helix of DNA?a. Bases can pair as long as there are enough hydrogen atoms.b. Shapes of complementary bases fit together like lock and key.c. The arrangement of atoms allows precise hydrogen bonding.d. Bases can pair as long as there are enough electronegative atoms.
Answer: Option C) The arrangement of atoms allows precise hydrogen bonding.
Explanation:
The individual hydrogen bonds between the base pairs confer stability to double helix of DNA.
The bases atoms take SPECIFIC POSITIONS or better still ARRANGEMENT, with Guanine pairing with Cytosine base atoms by three hydrogen bonds, while Adenine pair Thymine base atoms by two hydrogen bonds.
So, the arrangement of base atoms allows precise hydrogen bonding and hence STABILITY of DNA double helix.
Find the statement about Fusion that is false.
Group of answer choices
Fusion releases less energy than fission.
Fusion is extremely difficult to contain and maintain here on earth.
Fusion occurs when low mass nuclei, such as hydrogen collide and combine to form nuclei with greater masses.
fusion most commonly combines heavy isotopes of hydrogen into helium.
Fusion could be the world's answer to clean unlimited amounts of energy.
Fusion releases less energy than fission is FALSE about fusion. Rather, for the same weight of reactants, fusion generates more energy than fission reactions.
Explanation:
Fusion is the combination of small atoms into larger atoms with the release of energy in the process. However one requires enormous pressure (equivalent to that in the center of stars) to be able to fuse atoms together and generate fusion energy.
In addition, fusion energy is safer than fission energy. This is because, in case of a catastrophe, a fusion reactor would stop working almost immediately because the pressure sustaining the fusion reaction would most probably collapse. In addition, it does not release longer-lasting radioactive waste as a fission reaction does.
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