Answer:
I. Mutations to reproductive cells can be passed on to offspring.
Explanation:
Option B) Mutations in reproductive cells can be inherited by offspring, while mutations in body cells only affect the individual.
Mutations to reproductive cells, or gametes, are different from mutations to other cells in the body because only mutations to reproductive cells can be passed on to offspring. When mutations occur in somatic cells (non-reproductive cells), they affect only the individual in which they occur and are not inherited by future generations. However, mutations in reproductive cells can be transmitted to offspring during reproduction, potentially leading to genetic disorders or other hereditary traits.
The statement "Only mutations to reproductive cells can be passed on to offspring" accurately reflects this distinction. The other options presented are not accurate representations of the differences between mutations in reproductive cells and mutations in other cells in the body.
Complete Question:
The two main neurotransmitters of the autonomic nervous system are
I believe that they’re norepinephrine (NE), and the acetylcholine (Ach). Hope this helps!
The autonomic nervous system uses two key neurotransmitters, acetylcholine (ACh) and norepinephrine. They are released by the fibers of the sympathetic and parasympathetic divisions, binding to specified receptors on the target cells.
Explanation:The two main neurotransmitters of the autonomic nervous system are acetylcholine (ACh) and norepinephrine. Sympathetic and parasympathetic divisions of the autonomic nervous system have both types of neurons. The pre-ganglionic fibers release ACh and these fibers have nicotinic receptors in their cell membranes. Postganglionic parasympathetic fibers also release ACh, but the receptors on their targets are muscarinic receptors. On the other hand, postganglionic sympathetic fibers release norepinephrine, which binds to adrenergic receptors on the target cell. The exception is the fibers that lead to sweat glands and blood vessels associated with skeletal muscles, which release ACh.
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Przyjrzyj siê zdjêciom a nastêpnie zapisz zgodnie z przyk³adem w jakiej formie wystepuj¹ przedstawione na ich rosliny okrytonasienne
Answer:
Proszę podać zdjęcie wraz z pytaniem.
Which description is NOT consistent with the sympathetic division?
long postganglionic fibers
ganglia close to the spinal cord
thoracolumbar
most innervation from the vagus nerve
most innervation from the vagus nerve
The vagus nerve innervates most of the parasympathetic division.
Answer:
most innervation from the vagus nerve
Explanation:
Peripheral nervous system consists of all the neurons and ganglia within the body, outside the central nervous system. It is divided into:
Somatic nervous system- it controls the movements of skeletal muscles which means that this nervous system is under the voluntary controlAutonomic nervous system- its role is to control involuntary movements of smooth muscles and glandsAutonomic nervous system consists of:
sympathetic nervous system -responsible for the "fight and flight" reactions (stressful situations but also for maintaining homeostasis)parasympathetic nervous system -opposite to sympathetic system, responsible for "rest and digest" reactions (body activities at rest)enteric nervous system-controls digestionThe description that is NOT consistent with the sympathetic division is 'most innervation from the vagus nerve'. The vagus nerve primarily serves the parasympathetic division.
Explanation:The description that is NOT consistent with the sympathetic division is 'most innervation from the vagus nerve'. The sympathetic division of the autonomic nervous system (ANS) is characterized by its thoracolumbar division and its ganglia being close to the spinal cord. It also features long postganglionic fibers. However, the vagus nerve primarily serves the parasympathetic division of the ANS, not the sympathetic division. Therefore, this description is inconsistent with the sympathetic division.
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A student crosses two true-breeding pea plants, one with green pods and the other with yellow pods. If yellow is dominant over green, what phenotype results will the student find in the F1 generation?
A. 75% yellow, 25% green
B. 75% green, 25% yellow
C. 100% green
D. 100% yellow
Answer: Its D 100% yellow
Explanation:
g g
Y Yg Yg
Y Yg Yg
In this cross-yellow color of pods showing dominant trait over the green color pod, all the progeny shows the yellow color phenotype, hence option D is correct.
What is a dominant trait?According to the law of dominance, dominant traits in alleles mask the feature of the recessive allele.
In the given question yellow color of the pod shows the dominant trait, so it will mask the character of a recessive allele which is shown by green pods.
During the cross in the F1 generation recessive character is not expressed by the allele and after this generation, it will express.
Cross between parents: YY x gg
Gametes: Y and g
Phenotypes: all the progeny will be 100% yellow
Genotypes: Yg, Yg, Yg, Yg
The cross is attached in the image below.
Therefore, 100% yellow is the result of the F1 generation, hence option D is correct.
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Which of the following is a possible advantage for the environment of having farmers use plants that genetically produce Bt toxin?A) Plants with genes for the toxin are eaten less often by insects, and therefore less insecticide is needed.B) Plants that produce Bt toxin must be grown from new seeds each season, and therefore fewer of them are planted.C) Bt toxin is advantageous to many species of invertebrates that grow in the same fields.D) Harvesting plants with these genes is less disturbing to the soil layers where they are planted.E) Plants with these genes must be sprayed with the organism, but need much less than other plants.
Answer:
A) Plants with genes for the toxin are eaten less often by insects, and therefore less insecticide is needed.
Explanation:
Bt endoxin is lethal for some insects that ingest it (it is effective insecticide). Because of that, gene for the toxin is often used in the genetic engineering of certain plants, in order to reduce the use of pesticides. Unlike pesticides, which are unspecific (kill all insects, even those benefitial), Bt plants are a bit more specific.
Another advantage is that it has been shown that Bt corn is safe for human consumption.
Endocrine cells
a. are modified connective-tissue cells.
b. are a type of nerve cell.
c. release their secretions directly into body fluids.
d. contain few vesicles.
e. release their secretions onto an epithelial surface.
b
I am not that sure but I think endocrine cell don't contain blood vessels
Hi! From my observations I believe that the answer to this is c (release their secretions directly into body fluids), they’re hormone-secreting cells that are scattered around various other epithelial cells in the mucosa of the stomach and small intestine. Have a nice day! I hope this helps!
Mechanisms to bring an elevated body temperature down to the normal level include
To signal hunger, the physiological need for food, the digestive tract sends messages to the ________ by way of hormones and nerves.
To signal hunger, the physiological need for food, the digestive tract sends messages to the hypothalamus by way of hormones and nerves.
The digestive tract sends messages to the hypothalamus by way of hormones and nerves to signal hunger.
To signal hunger, the physiological need for food, the digestive tract sends messages to the hypothalamus by way of hormones and nerves. The hypothalamus is a small region in the brain that regulates various bodily functions, including hunger and satiety.
When the body needs food, the digestive tract releases hormones such as ghrelin, which stimulates appetite. The hormones travel through the bloodstream and reach the hypothalamus, where they bind to specific receptors and trigger hunger signals.
In addition to hormones, the digestive tract also sends nerve signals to the hypothalamus. These nerve signals carry information about the state of the digestive system, such as the level of food in the stomach. If the stomach is empty, the nerves send signals to the hypothalamus, contributing to the sensation of hunger.
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The airway that connects the larynx to the bronchial tree is the
Trachea connects the larynx to bronchial tree.
The rainforest contains half of the Earth’s wildlife and at least two thirds of its plant species. It can hold great quantities of water and is very important to the planet’s water cycle. Rainforests remove vast amounts of CO2 from the atmosphere and replace it with oxygen. Which of the following statements best summarize the above information about rainforests?a.The majority of the planet’s oxygen is generated from the rainforest.b.Two-thirds of all plants originated from the rainforest.c.The rainforest is a major catalyst for the planet’s water cycle.d.The rainforest is important to life as a whole on the planet. Please select the best answer from the choices provided
D.The rain forest is important to life as a whole on the planet.
Answer: d. The Rainforest is important to life as a whole to the planet
Explanation: option D best summarizes the information because the whole processes described are all essential in sustaining life as it is more encompassing that the other options. Plants therein sequestering carbondioxide and releasing oxygen is the process of photosynthesis, sugars are also produced which give life as food to a variety of animals. Plants and animals also avail themselves of the great quantities of water held by the plants. Thus the whole cycle produces more plants and animals to replace dying ones thereby preserving life.
Serous fluid in the pericardial cavity __________. serous fluid in the pericardial cavity __________. is a remnant of embryonic development increases friction between the beating heart and the outer wall of the pericardial sac is a slippery fluid secreted by the fibrous pericardium is secreted by the heart itself is secreted by the epithelial cells of both layers of the serous pericardium
Answer:
The correct answer will be option-is secreted by the epithelial cells of both layers of the serous pericardium
Explanation:
Serous fluid is a fluid which resembles the serum of the blood in its color which is pale yellow to transparent.
The serous fluid is present in the cavities of the body organs like in heart, the fluid is present in the pericardial cavity.
The serous fluid lubricates the wall of the heart and is produced by the serous pericardial membranes. The secreted fluid gets collected between the pericardial cavity which helps slide the smooth movement of the serous layer against each other.
Thus, secreted by the epithelial cells of both layers of the serous pericardium is the correct answer.
The serous fluid in the pericardial cavity reduces friction during heart contractions by lubricating the space between the heart and the pericardial sac. It is secreted by a special epithelium called the mesothelium attached to the pericardium.
Explanation:The serous fluid in the pericardial cavity is secreted by the epithelial cells of both layers of the serous pericardium. Specifically, this substance is produced by a simple squamous epithelium known as a mesothelium, which is supported by connective tissue and attached to the pericardium. This fluid has a lubricating function, significantly reducing friction between the heart and the outer wall of the pericardial sac each time the heart contracts.
There are three serous cavities in the body: the pericardial, pleural, and peritoneal cavities. Serous membranes, including the pericardium surrounding the heart, form fluid-filled sacs or cavities and serve to cushion internal organs and prevent friction during movement.
For example, the serous fluid in the pericardial cavity safeguards the heart, while similar fluid in the pleural cavity protects the lungs. All these serous membranes secrete a thin, slippery serous fluid that functions to decrease friction and potentially harmful abrasion among organs.
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Which sequence of events describes natural selection? Which sequence of events describes natural selection? A population of a mammal species varies in the length of their legs; water levels rise and the habitat becomes swampy; the individuals with shorter legs are better able to swim to food; the population evolves to become shorter-legged. A population of a mammal species lives near the water; water levels rise and the habitat becomes swampy; the act of swimming shortens the legs of the mammals; the offspring of the mammal species have shorter legs. A population of a mammal species lives near the water; water levels rise and the habitat becomes swampy; the animals have trouble moving in the water; the population changes to a shorter-legged type so they can move more easily in the water. Water levels rise, and a habitat becomes swampy; a population of a mammal species on high ground observes the change; individuals with shorter legs migrate to the area.
Answer:
i dont know maybe exall.4
Explanation:
the way its made is unusual but its correct to sell if its 97 degrees at all times
im 50% sure
Variations in the size and shape of cells within a single species of bacteria is known as ______.
Answer: Pleomorphism
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...
The type of plant.The amount of sunlight.The type of music.The type of liquid
Answer:
the type of liquid
Explanation:
All the other variables are the same
The independent variable in this experiment is the type of liquid used.
INDEPENDENT VARIABLE:
Independent variable in an experiment is the variable that is changed or manipulated by an experimenter. The independent variable causes an response in the dependent variable. In this experiment performed on plants to see how different liquids affect plant growth, different types of liquids such as water, apple juice, or milk are used. This means that the type of liquid was the variable that was changed in this experiment, hence, it is the independent variable.Learn more at: https://brainly.com/question/17498238?referrer=searchResults
Choose the word that best completes this sentence. ________ can only grow and multiply within the cells of another living thing
Answer:
The word that best complete the sentence is VIRUSES.
Explanation:
There are different types of microorganisms, one of them is virus. Viruses are different from other forms of microbes because they need living cells to become active; outside living cells they are inactive and did not exhibit any of the features of living things.
Viruses only grow and multiply when they are withing the cells of another living thing; they do not have the capacity to survive and reproduce outside a living host.
What does the right side of the brain control
Answer:
The right side coordinate the left side of the body and helps in comparisons, rough calculations and has to do with art and creativity.
Explanation:
The brain is made up of two hemispheres which include right and left hemisphere. Thus, each of the hemispheres is connected together by bundles of nerve fibers. However, right hemisphere is commonly refers to as analog brain that coordinate the left side of the body. Furthermore, the right side of the brain helps in comparisons, rough calculations and has to do with art and creativity. Similarly, it is responsible for the control of reasoning, attention, problem solving and memory.
In which of the following environments would you NOT expect to find fossils? (2 points)
Active volcanic islands
An area with high concentration of sedimentary rocks
The Grand Canyon
A shallow ocean
You would generally not be able to recover fossils from volcanic or plutonic rock, so looking around in an area on active volcanic islands would yield nothing.
You always want to look in the layers of sedimentary rock for fossils. The Grand Canyon would be a great place to see these layers as well as a shallow ocean because you may find the remains of prehistoric shark teeth or bones protruding through the surface of the sand.
The answer is Active volcanic islands.
If this is a question in which you can choose more than one answer it may be smart to also choose a shallow ocean as well. This is because it is difficult to get the tools and materials necessary down in the water and would be difficult to get deep enough underneath sand to start digging into actual fossil bearing rock.
So in that case, the answer would then be both Active volcanic islands and A shallow ocean.
Which type of neuron carries impulses from sense organs to the spinal cord or brain?
A. motor neuron
B. sensory neuron
C. association neuron
B SENSORY NEURONS The cell body of sensory neurons is outside the CNS in ganglia
Over evolutionary time, many cave-dwelling organisms have lost their eyes. Tapeworms have lost their digestive systems. Whales have lost their hind limbs. How can natural selection account for these losses?A. Natural selection cannot account for losses, only for innovationsB. It can account for these losses by the principle of use and disuseC. Under particular circumstances that persisted for long periods, each of these structures presented greater costs than benefitsD. These organisms had the misfortune to experience harmful mutations, which caused the loss of these structures over a few generations
Answer:
C. Under particular circumstances that persisted for long periods, each of these structures presented greater costs than benefits
Explanation:
Natural selection is evolutionary mechanism which favors traits (structures, behavior) of an organism that help him survive and reproduce. But, when there are some structures of an organism that are useless, selective pressure acts against them. Structures that don't contribute to an organism’s survival and reproduction, but are not directly harmful will take long time to be eliminated.
A medical researcher compared the variances in birth weights for five randomly chosen babies of each gender, with the megastat results shown below. the population variances:
Answer: do it yourself
Explanation:
Identify landform E explain how it forms and tell whether it is the result of erosion or deposition
Answer:
E is a barrier beach. It forms by deposition, when sand carried by incoming storm waves piles up parallel to the shore and above sea level.
Final answer:
Glaciers form landforms through erosion and deposition. Erosional features include U-shaped valleys, aretes, and horns, sculpted by the glacial movement, while depositional features include drumlins and moraines, created from sediment left as glaciers retreat.
Explanation:
Landform E likely refers to a specific type of landform on a map or diagram provided in the material. Since the specific landform is not mentioned, we will discuss how glaciers form and create certain landforms through erosion and deposition. Glacier formation begins when snow persists year-round and compacts over time into dense, thick ice masses. Continental glaciers cover vast land areas while valley glaciers flow like rivers down mountain valleys.
Glaciers cause erosion by plucking and abrading the rock beneath them. As glaciers move, they carry with them rock fragments that function as abrasive tools, smoothing and sculpting the land into features such as U-shaped valleys and fjords. In contrast, erosional glacial landforms include aretes, horns, and cirques formed by the glacial movement.
When glaciers retreat, they leave behind depositional landforms made of sediments called till. Examples of landforms deposited by glaciers are drumlins, eskers, and moraines. These formations are the result of glacial deposition, indicating where glaciers have dropped their load of sediment. Determining whether Landform E is a result of erosion or deposition depends on the specific type of landform described, which could range from a glacial valley (erosion) to a moraine (deposition).
What do cinders, ash, and lava all have in common?
They all travel thousands of kilometers by air after volcanic eruption.
They all flow slowly down the sides of volcanoes after eruption.
They are all different forms that magma takes after a volcanic eruption.
They are all formed during effusive, but not explosive, eruptions.
Answer:
I'd say it is C. They are all different forms that magma takes after a volcanic eruption
Explanation:
Magma is the liquid form of lava and ash and cinder come form the burning of matter. Hope this helps.
During volcanic eruptions, the particle remaining of the solids is called ash while partially or predominantly burned out material from incomplete combustion of woods and coal results in cinders.
Cinders, ash and lava are all different forms that magma takes after a volcanic eruption.
The substances can be explained as:The volcanic eruptions results in the flow of a hot liquid called lava from the beneath layers of earth and the burnt material are in the form of ashes.The burnt particle of wood and coals are called cinders and together with ash and lava are the forms of magma and burning of matter.Therefore, option C is the correct statement.
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The general adaptation syndrome describes stages in the
Answer:
body??
Explanation:
The general adaptation syndrome describes stages in the body's response to stress: alarm, resistance, and exhaustion.
The general adaptation syndrome describes stages in the body's response to stress. It was first proposed by Hans Selye and includes three stages: the alarm stage, the resistance stage, and the exhaustion stage. In the alarm stage, the body recognizes a stressor and triggers the fight-or-flight response. In the resistance stage, the body adapts to the stressor and tries to restore homeostasis. In the exhaustion stage, if the stressor persists, the body's resources are depleted, leading to various health issues.
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Olfactory sensory neurons are short-lived and, therefore, replaced frequently. how does this turnover happen?
Mitotic division and differentiation of basal epithelial cells.
? what does flacc stand for? how old does a child need to be to use the flacc scale for pain? what is the form of evaluation when using the flacc scale?
Answer:
FLACC stands for the Face, Legs, Activity, Cry, and Consalibility scale. Children should be between 2 months to 7 years of age. The form of evaluation is a scale from 1-10 to describe pain.
Explanation:
FLACC stands for Face, Legs, Activity, Cry, and Consolability, and it's a tool used to assess pain in children aged 2 months to 7 years. The scale measures pain through five categories, with caregivers or healthcare professionals observing the child's behavior to gauge pain levels.
Explanation:FLACC stands for Face, Legs, Activity, Cry, and Consolability. It is a tool used to assess pain in children, particularly those who can't express their pain verbally. These five categories help evaluate the physical and behavioral signs of pain. Each category is scored from 0 to 2, providing a total score that can range from 0 (no pain) to 10 (severe pain).
The FLACC scale is typically used for children aged 2 months to 7 years, but it can be also used with older children who are unable to communicate verbally due to cognitive or developmental disabilities. However, for children above 7 years with good communication skills, other pain assessment scales should be used.
When using the FLACC scale, caregivers or healthcare professionals watch and evaluate the child's behavior and expressions to gauge their level of pain. They score each of the five categories based on their observations and sum up these scores to quantify the child's pain level.
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Where can penguins be found in south america
Answer:
only found on the south-western coast ofAfrica, living in colonies on 24 islands between Namibia and Algoa Bay, near Port Elizabeth, South Africa
Answer:
Penguins can be found in South America on the coasts of Chile, Argentina, Uruguay, and Peru. Specifically, some of the most well-known penguin colonies in South America are found in Punta Tombo in Argentina, Isla Magdalena in Chile, and the Ballestas Islands in Peru. Penguins are flightless birds that are adapted to living in cold environments. There are several species of penguins found in South America, including the Magellanic penguin, the Humboldt penguin, and the Galapagos penguin.
Explanation:
The process of making rna from dna is called
Answer: DNA transcription
Transcription is the process where RNA is created from DNA using RNA Polymerase. This creates an mRNA strand carrying genetic instructions which will be translated into a protein during translation.
Explanation:The process of creating RNA from DNA is known as transcription. This process involves an enzyme known as RNA Polymerase which unzips the DNA's double helix structure to use one strand as a template for building an mRNA molecule. The constructed mRNA molecule carries genetic instructions from the DNA and these instructions will subsequently be read by ribosomes in the protein synthesis process, also known as translation.
Transcription can be divided into three main stages: initiation, elongation, and termination. During initiation, the RNA Polymerase attaches to a specific area on the DNA strand. For elongation, the enzyme moves along the DNA template, synthesizing a new mRNA strand in a 5' to 3' direction. Once the RNA Polymerase encounters a termination signal on the DNA, transcription stops, and the mRNA molecule is released.
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If two organisms possess similar structures that serve similar functions but don't possess a common ancestor that shared that structure, then the structures are classified as A. homologous. B. morphologies. C. vestigial. D. analogous.
Answer:
D. analogous.
Explanation:
Analogous organs can be defined as organs, which show similar functions, but do not having common origins. Organisms that possess analogous organs do not share common ancestor as their organs are derived from different origins.
Examples of analogous organs include wings of bats, birds, and birds which are evolved independently, but share common function (flying).
Thus, the correct answer is option (D).
Answer:
D. analogous
Explanation:
Analogous organs can be defined as organs, which show similar functions, but do not having common origins. Organisms that possess analogous organs do not share common ancestor as their organs are derived from different origins.
Examples of analogous organs include wings of bats, birds, and birds which are evolved independently, but share common function (flying).
_______ has a greater partial pressure in the pulmonary capillaries than in the alveoli
Answer:
CO2
Explanation:
Diffusion is a simple process of molecular movement, from their higher concentration to the area with their lower concentration. The process of CO2 movement from the pulmonary capillaries into the alveoli is part of the gas exchange (together with oxygen movenent in opposite direction) and it is actually simple diffusion. Alveoli have huge surface area, thin cell walls and a lot of blood vessels around them. All of these are adaptations that facilitate gas exchange. There is a gradient in partial pressure of the CO2: it is much higher in the pulmonary capillaries than in the alveoili so it moves down its gradient-from the blood to the alveoli (exhale).
Carbon dioxide has a greater partial pressure in the pulmonary capillaries than in the alveoli. This pressure difference allows the carbon dioxide in the capillaries to move to the alveoli and be exhaled.
Explanation:The substance with a greater partial pressure in the pulmonary capillaries than in the alveoli is Carbon Dioxide (CO₂). This disparity arises because the partial pressure of carbon dioxide in the pulmonary capillaries is about 45 mm Hg, while its partial pressure in the alveoli is roughly 40 mm Hg. The pressure gradient facilitates diffusion, allowing CO₂ to move from the blood of the capillaries into the alveoli, where it can then be expelled from the body during exhalation.
This is a contrasting scenario to oxygen (O₂), which has a lower partial pressure in the pulmonary capillaries (40 mm Hg) compared to the alveoli (104 mm Hg). Consequently, due to the pressure gradient, O₂ moves from the alveoli into the capillary's blood, where it bonds to hemoglobin in red blood cells and is transported to tissues throughout the body.
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In apples, the allele a is dominant for a big size apple and the allele r is dominant for red color. you cross one tree that produces big yellow apples and another tree that produces small red apples. half of the offspring trees produce big red apples and half produce big yellow apples. what are the genotypes of the parents?
Answer:
AArr and aaRR
Explanation:
The genotypes of the parents are AArr and aaRR.
What is the dihybrid cross?
A breeding experiment conducted between two organisms who are identical hybrids for two traits is called a dihybrid cross. Simply saying,, a dihybrid cross is a cross between two organisms, where both are heterozygous for two different traits. The individuals present in this type of trait are homozygous for a particular trait. These traits are due to the DNA segments which are called genes.
The parents carry different pairs of alleles for each trait in a dihybrid cross. One of the parents carries a dominant allele that is homozygous and the other one carries a recessive allele that is homozygous. The cross produces offspring in the F1 generation which is all heterozygous for specific traits.
Therefore, The genotypes of the parents are AArr and aaRR because a is dominant for a big size apple and the allele r is dominant for red color. One tree that produces big yellow apples and another tree that produces small red apples are crossed. Half of the offspring trees produce big red apples and half produce big yellow apples.
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