on the surface of the earth, the force of gravity acting on one kilogram is: _________ newton’s

climate is defined as the statistics of weather which remains in an area for a period of time. different elements are involved to asses the climate of any specific are which include, humidity, temperature, wind , atmospheric pressure, precipitation and other variables. but in the modern times since humans has evolved, they have created a lot of problems for themselves. the weather conditions are going harsh and the global temperature has increased by two degrees Centigrade. the ozone layer has been effected and the ultraviolet rays directly hit the Earth causing increased rate in cancer and health related problems. from agriculture prospective, the per capita yield is low as the weather patterns are changing.

similarly, the deforestation and excessive urbanization is other major concern for our future. the natural pattern has been  challenged and the animals are going extinct the example of Polar bears and Rhinos are infront of us.

in a nutshell the future seems very uncertain if the activities of human beings tend to continue at the same pace. the coming generation will face a lot of problems. but, we can reverse that by planting more trees, managing the resources with care and creating awareness among the masses to love the dear Earth

Answer:

b) Axon terminals

Explanation:

Dendrite is the receiving part of the presynaptic neuron, while axon is the transmitting part of the neuron. So, after initiation, action potentials travel down axons to the terminals.

Action potential travels through the membrane of the presynaptic cell causing the voltage-gated channels permeable to calcium ions to open. Ca2+ flow through the presynaptic membrane and increase the Ca concentration in the cell which will activate proteins attached to vesicles that contain a neurotransmitter (e.g. acetylcholine). Vesicles fuse with the membrane of the presynaptic cell, thereby release their contents into the synaptic cleft-space between the membranes of the pre- and postsynaptic cells. Neurotransmitter ACh binds to its receptors on the postsynaptic membrane and its binding causes depolarization of the target cell (muscle cell). Depolarization occurs because sodium enters the cell as a result of neurotransmitter receptor binding.

The traits or characteristics that was NOT found to be more similar in identical twins when compared to fraternal twins in the Minnesota twin study is a.) Tendency to divorce

What was the Twin studies ?

Twin studies are a unique class of epidemiological research intended to quantify the relative contribution of genetics vs environmental factors to a certain trait. The results of older twin studies have frequently been validated by later molecular genetic research, despite the fact that the classical twin studies are still influenced by assumptions developed in the 1920s and that the study design itself is the inherent restriction.

Therefore Tendency to divorce is one of the features or characteristics that the Minnesota twin study did not find to be more similar in identical twins compared to fraternal twins.

complete question;

Which of the following traits or characteristics was NOT found to be more similar in identical twins when compared to fraternal twins in the Minnesota twin study?

a.) Tendency to divorce

b.) Empathy

c.) Intelligence

d.) Leadership

The correct answer is - D: Arthropods.

The arthropods (Arthropoda) are a very large phylum, having almost two million species described so far, and there might be even up to 15 times more than that. The arthropods are one of the oldest organisms that still exist. Their most recognizable characteristics are the exoskeleton, fragmented body, and jointed appendages. They only have an other shell, and do not posses internal skeleton, thus making them hard on the outside, and squishy on the inside. The body is fragmented, the number of fragments is differing from family to family, and that is in order for them to have greater mobility. Another characteristic that enables them greater mobility and flexibility are the jointed appendages. They were also the first more complex organisms that got out on the land, and dominated it for quite some time. Unfortunately for them, they do not have the ability to develop their brains on a higher level, thus they were easily outcompeted by the newly emerging groups of animals and fell into their shades.

Rising carbon dioxide level in the blood is mainly due to increased respiration in tissues. The carbon dioxide excreted by cells dissolves in blood plasma producing carbonic acid that lowers blood pH. A homeostatic response of the body will be increase respiration rate to expel the excess carbon dioxide from the body so as to maintain a normal 7.35-7.45 pH.  

Answer:

Abiotic factors include all the non living factors that affect the living organisms for survival such as light, wind, heat, temperature etc.

In mountain Saint Helens,abiotic factors hold critical position for the colonization and survival of animals and plants.

For example: Wind was an important source of transferring seeds, spiders and insects in the blast zone of the mountain after the volcanic eruption.

Plant survivors, landscape , rocks and burrows played the role of nets that caught the seeds. This enables the establishment and survival of plant specie in eruption zone.

Therefore, abiotic factors have crucial role in succession after the eruption in MT Saint Helens.

Hope it help!

Final answer:

The eruption of Mt. St. Helens in 1980 led to a primary succession process where abiotic factors such as soil quality, water, and climate influenced the reestablishment of plant communities, starting with lichens and progressing to a diverse climax community.

Explanation:

The 1980 eruption of Mt. St. Helens resulted in a natural process known as succession, where a new community of plants and animals gradually recolonizes an area. After the volcanic event decimated the north side of the mountain, the landscape was overtaken by volcanic debris that created a new soil substrate devoid of the original ecosystem's remnants, such as seeds. This setting provided the stage for primary succession.

Abiotic factors like soil quality, water, and climate played crucial roles in the succession process at Mt. St. Helens. These non-living components of the ecosystem influenced which species were able to colonize the area first. For example, lichens began the process of rock breakdown, contributing to the creation of nutrient-rich soils. Next, mosses and grasses were able to grow, which further improved the soil, making it suitable for shrubs and eventually allowing for the growth of small trees.

Over time, a climax community is likely to develop, which exhibits a stable and diverse ecosystem. The changes brought on by the eruption led to the renewed cycle of plant succession, as new communities modified the environment, making it hospitable for successive plant communities until the eventual reestablishment of a forest.

Answer:

Water at 4 degrees centigrade has the highest density and lowest volume

Explanation:

When oceans freeze, only the upper layer freezes to ice because water above 4 degrees and freezing point are less dense. This means ice sheets float on cold water and also insulate  the water underneath from fast heat loss. This how the water beneath remains liquid and supports aquatic life even in temperatures below freezing on adjacent land.

These weeds will be more likely to survive than others if glyphosate is present

Answer:

The options in the question are missing, the options are:

(1) produce chemicals that kill weeds growing near them

(2) die when exposed to glyphosate

(3) convert glyphosate into fertilizer

(4) survive when glyphosate is applied to them

The answer is 4

Explanation:

According to the question, glyphosate is a weed killer (herbicide) i.e. it kills plants when applied to them. However, when a gene that codes for resistance to glyphosate is inserted into the genome of certain plants, the gene confers resistance to glyphosate on the plants.

This resistance makes the plants with the resistant genes to survive whenever glyphosate is applied to them as the herbicide will no longer be effective against the plants with the resistant gene.

Dna is located in the nucleus of the cell and make up the chromosomes.

Every cell has a nucleus that carries DNA. In the DNA, thread-like structures are formed and are known as chromosomes. The chromosome are coiled up and tightly wrap around proteins.  

DNA is in the nucleus of the cell and forms the organism's genetic material. It contains the information needed for growth, development, and reproduction. The genetic material is organized into structures called chromosomes.

DNA, which stands for deoxyribonucleic acid, is located in the nucleus of the cell and makes up the genetic material of the organism. It is a molecule that contains information that an organism needs for growth, development, functioning, and reproduction. This genetic material is organized into structures called chromosomes. For example, in humans, DNA is organized into 23 pairs of chromosomes.

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Dietary fiber refers to the part of plants consumed in food. Functional fiber is the form added to food and found in fiber supplements. Insoluble fiber does not dissolve in water, while soluble fiber becomes viscous or gel-like when wet.

The question is about different types of fiber and their characteristics.

Dietary fiber is a part of plants consumed in food.

Functional fiber is added to food and is the form in fiber supplements.

Insoluble fiber does not dissolve in water, whereas

soluble fiber is soluble and viscous, meaning it forms a gel when wet. These various forms of fiber all play a role in maintaining healthy physiological functions.

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Dietary fiber is the type of fiber that is a part of plants consumed in food. Soluble fiber dissolves in water and forms a gel-like substance in the digestive system, while insoluble fiber does not dissolve in water and adds bulk to the stool. Functional fiber refers to fiber added to food and found in fiber supplements.

The type of fiber that is a part of plants consumed in food is called dietary fiber. It is found naturally in foods such as fruits, vegetables, whole grains, and legumes.

Soluble fiber is the type of fiber that dissolves in water. It forms a gel-like substance in the digestive system, which can help to lower cholesterol and control blood sugar levels. Examples of foods rich in soluble fiber include oats, barley, beans, and fruits.

Insoluble fiber is the type of fiber that does not dissolve in water. It adds bulk to the stool and helps to prevent constipation. Foods high in insoluble fiber include whole wheat bread, brown rice, nuts, and vegetables.

Functional fiber refers to fiber added to food and found in fiber supplements. It is not naturally present in foods, but is added for its beneficial effects on health.

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The correct answer is: silent mutation

There are a few types of genetic mutation that can change genetic code. Those mutations can be classified:

1. Substitution-only one base is changed

• Nonsense mutations-when substitution leads to the formation of a stop codon instead of a codon

• Missense mutations-when one nucleotide is substituted and a different codon is formed

• Silent mutations-when a nucleotide is substituted and the same amino acid is produced

2. Insertion- extra base pairs are inserted

3. Deletion- section of DNA is deleted

This is a missense mutation, which is a type of point mutation where a single nucleotide is replaced, resulting in a change in the codon sequence. Despite the change, both the original and mutated codon still specify the same amino acid.

This is an example of a point mutation called a missense mutation. In this mutation, a single nucleotide is replaced with another, resulting in a change in the codon sequence. Despite the change in the codon, both the original codon (UAC) and the mutated codon (UAU) still specify the same amino acid, tyrosine.

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The choice demonstrates that time is scarce

Answer: Time is scare.

Explanation:

The time is scare because there is a over lap between the team sport or taking the music lessons. This shows that time is insufficient for the demand.

The time is not sufficient for two of the activities. The time is not available for the music lessons neither the time is available for the team sport.

There is a high demand of time but two things cannot take place at the same time.The demand for time is high but there is nothing one can do for the time, she has to choose from the given two options.

A) Subduction and high pressure

A. Subduction and high pressure

The answer is the Appendicular skeleton.

Good luck!

-RxL

The system described above is the Appendicular system.

it permits circumduction

The false statement about the hip joint is: b. It has a biaxial design.

However, stating that the hip joint has a biaxial design is incorrect. The hip joint is a ball-and-socket joint, which means it allows movement in multiple directions, not just two. It permits movements such as adduction, abduction, flexion, extension, internal rotation, and external rotation.

a. The hip joint permits adduction, which is the movement of the thigh toward the midline of the body.

c. The hip joint permits flexion, which is the movement of bending the thigh toward the abdomen.

d. The hip joint permits extension, which is the movement of straightening the thigh backward.

Therefore, the correct statement would be that the hip joint has a multiaxial or triaxial design rather than a biaxial one. Additionally, all hip joints in humans permit circumduction due to their structure and the muscles that act upon them.

The complete question is:

Which of these statements about the hip joint is false?

a. It permits adduction.

b. It has a biaxial design.

c. It permits flexion.

d. It permits extension.

The cytoplasm that surronds the nucleus of a neuron is called the perikaryon.

The cytoplasm that surrounds the nucleus of a neuron is called the - perikaryon.

The nervous system has neurons and neuroglial cells. Neurons are used in transmitting information by electrical impulses. Neurons are structural and functional units of the nervous system.

Neurons:

Thus, the cytoplasm that surrounds the nucleus of a neuron is called the - perikaryon.

Learn more about neurons:

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The correct answer is: a) It attaches to proteins that are marked for destruction in the cell.

Ubiquitin is a regulatory protein of eukaryotic cell with the various of function. The mechanism of its action involves the addition of ubiquitin to a substrate protein (ubiquitination). Ubiquitin regulatory roles are:

• marking thee proteins for degradation via the proteasome,  

• alter the cellular location of proteins,  

• promoting or preventing protein interactions.

The protein called ubiquitin functions to mark other proteins for destruction by attaching to them and directing them to the proteasome for degradation.

The function of the protein called ubiquitin is to mark other proteins for degradation within the cell. When a protein is tagged with ubiquitin, it is an indication that the protein's lifespan is over, and it should be directed to the proteasome, which is responsible for breaking down and recycling proteins. The process of tagging proteins with ubiquitin and thereby controlling the longevity of these proteins is a key method for regulating gene expression in cells. This post-translational modification is vital for maintaining cellular homeostasis and function.

Answer: a.) It attaches to proteins that are marked for destruction in the cell.

the answer is avoli, because they are the smallest part of the lungs so the carbon dioxide goes back through the blood stream to be reoxygenated by the pulmonary system.

Answer:

The alveoli

Explanation:

I believe the answer would be genetic continuity.

Answer:

Genetic continuity

Explanation:

Genetic continuity, in one part, refers to the process of asexual cell division (mitosis) in ensuring that daughter cells have the same number of chromosomes and genes as the parent cells.

On the other part, it refers to the process that keeps the number of chromosome constant from generation to generation in sexually reproducing organisms.

An allele is an alternative form of a gene (in diploids, one member of a pair) that is located at a specific position on a specific chromosome. Diploid organisms, for example, humans, have paired homologous chromosomes in their somatic cells, and these contain two copies of each gene.

Answer:

C and D both appear to be the same answer. I believe one of those if correct. (read explanation)

Explanation:

The spinal cord serves as a conduit for signals between the brain and the rest of the body. It also controls simple musculoskeletal reflexes without input from the brain. The brain is responsible for integrating most sensory information and coordinating body function, both consciously and unconsciously.

Brown algae is multi cellular

The answer is B succinate dehydrogenase

Cycstic Fibrosis (C)

Hemophilia has to do with the blood

Down Syndrome is because of an extra chromosome

Sickle-Cell disease also has to do with blood.

the correct answer is c

e. There are haploid, diploid, and triploid cells.

The inheritance pattern of the skin condition in Bob's family is most likely X-linked dominant, as all daughters have it (inheriting the X chromosome from Bob) but none of the sons do.

Based on Bob and Eleanor's family history, the inheritance pattern of the skin condition is most likely X-linked dominant. This is because all of the daughters, who would have received Bob's X chromosome, have the condition while none of the sons do. This implies that the condition is carried on the X chromosome, and is dominant because it manifests in all the daughters who possess a single copy of the mutated gene. In X-linked dominant conditions, a father cannot pass the trait to his sons (as he contributes the Y chromosome), but can pass it to all of his daughters.

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The skin condition in the family follows an X-linked dominant inheritance pattern. This is evident because only the daughters, who each inherited an X chromosome from Bob, have inherited this skin condition. Understanding such inheritance patterns helps predict the likelihood of offspring inheriting a genetic disorder.

Based on the provided family history, the skin condition in this family follows an X-linked dominant inheritance pattern. In such a pattern, an abnormal allele for a genetic condition present on the X chromosome is dominant over a normal allele. Here, Bob, who has the condition, has passed on this abnormal gene to all his daughters, because each of his daughters receives his X chromosome. His sons, on the other hand, receive his Y chromosome, so they don't inherit the condition.

For a pattern to be classified as X-linked dominant, it is sufficient for an affected father to pass on the condition to all his daughters. This pattern differs from autosomal dominant inheritance, where the offspring of either sex can inherit the condition when one parent is heterozygous and the other is homozygous for the normal gene.

The study of such inheritance patterns, which form a key part of human genetics, can help predict the likelihood of a couple's offspring inheriting a genetic disease or disorder.

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25% would have tay-sachs disease, 25% normal, 50% carriers

Eric and Janelle have a 25% chance of having a child with Tay-Sachs disease, as they are both carriers of the recessive allele. The inheritance follows autosomal recessive patterns, with 50% chance for a carrier child and 25% for an unaffected child.

If Eric and Janelle, who are both carriers (heterozygotes) of the recessive allele causing Tay-Sachs disease, have a child, the probability that this child would have Tay-Sachs is based on autosomal recessive inheritance patterns. We represent a normal allele as 'T' and the Tay-Sachs mutation as 't'. Each parent has one of each allele (Tt).

When  create a Punnett square to show all possible combinations of their alleles, we find:

Statistically, this results in a 25% chance that their child will be born with Tay-Sachs disease (tt), a 50% chance that their child will be a carrier (Tt), and a 25% chance of a child being unaffected and not a carrier (TT).

The correct answer is two hydrogen bonds between adenine and thymine (the bond is thus weaker and longer) and three between cytosine and guanine.

A hydrogen bond is a bond formed between a hydrogen (H) atom and electronegative atom or group, such as nitrogen (N), oxygen (O), or fluorine (F).

Hydrogen bond is found in the double helical structure of DNA between its base pairs. Guanine is complementary linked with cytosine and adenine with thymine. Thanks to hydrogen bonds one complementary strand is connected to the other and replication is enabled.

Myosin is the answer.

Hope this helps.

Myofibrils in muscle cells are made up of thick filaments called myosin, which work with thin actin filaments to facilitate muscle contraction.

Myofibrils, which are essential components of muscle cells, are primarily composed of thick and thin filaments. These filaments function together to facilitate the process of muscle contraction. The thick filaments are composed of a protein called myosin, while the thin filaments consist of a protein known as actin. Therefore, myofibrils are made up of thick filaments called myosin. It's important to distinguish between myosin, tendons, and microfibers. Tendons are connective tissues that attach muscle to bone, while microfibers are very fine synthetic yarns.

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Answer:

b) The nuclear envelope is continuous with the Golgi apparatus.

Explanation:

The nuclear envelope is a nuclear membrane composed of two lipid bilayers: inner and outer membrane and perinuclear space between them. Its outer membrane is continuous with the endoplasmic reticulum. Nuclear pores that are part of this envelope allow the movement of molecules in and from the nucleus (e.g. mRNA formed during transcription should be transported into cytosol through the pores).