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3 years ago

Please select the word from the list that best fits the definition

Biology

1 answer:

Anon25 [30]3 years ago

4 0

Answer:

Momentum.

Explanation:

a measure of how difficult it is to stop a moving object; equals the product of mass and velocity.

I hope this helps a little bit.

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Which of the following is an example of polygenic inheritance? a. White and purple flower color in peas b. The ABO blood groups

Delicious77 [7]

Answer: Hi.... I hope it helps!!

Skin Pigmentation in humans

Explanation: Polygenic inheritance- It is simply a single characteristic which is controlled by more than two genes. Human skin's color is determined by the amount of dark pigment it has which is melanin . Minimum four genes are involved in the melanin production.

It is a case of continuous variation as the combination of melanin producing allele are responsible for degree of pigmentation

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3 years ago

Which neurotransmitters is a dissolved gas?

Tju [1.3M]

Typical types of neurotransmitters include small molecule neurotransmitter substances (acetylcholine, serotonin, dopamine, histamine, norepinephrine, and epinephrine), amino acids (GABA, glutamate), neuroactive peptides (insulin, glucagon) and soluble gases like nitric oxide and carbon monoxide

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3 years ago

Each of the tissues listed below has a specialized function that is linked closely to the structures found within the tissue's c

ivann1987 [24]

Answer:

Insect flight muscles [Mitochondria]

Cells lining the respiratory passages [Cilia]

White blood cells that engulf and destroy invading bacteria [Lysosomes]

Leaf cells of cacti [Chloroplasts]

Goblet cells lining the intestinal tract that secrete mucus [Golgi apparatus]

Pancreatic cells that are responsible for creating several digestive enzymes (proteins) [Ribosomes]

Explanation:

Mitochondria are cell organelles whose main function is energy generation during respiration. They generate energy in the form of ATP which is then used by the cells and tissues for various metabolic function. Mitochondria are abundant in cells whose energy requirements are high such as muscle cells. Therefore, insects flight muscles will have an abundance of mitochondria.

Cilia are finger-like projections on respiratory surfaces whose sweep-like movements help to move particles and fluids out of the airways. In the trachea, the cilia trap particles like bacteria and viruses and then move these trapped particles along with mucus up to the pharynx where it is either coughed out or swallowed into gastrointestinal tract. Therefore, respiratory surfaces like the trachea will have an abundance of cilia.

Lysosome are cell organelles which function to destroy and digest foreign and cellular proteins in the cell. They have an abundance of proteolytic enzymes which degrade proteins at acidic pH. Therefore, white blood cells that engulf and destroy invading bacteria will have an abundance of ysosomes.

Chloroplasts are plant cells organelles which are the sites for photosynthesis. It is abundant in the leaves of plants where photosynthesis mainly take place. Therefore, leaf cells of cacti will have an abundance of chloroplasts.

Golgi apparatus is a cell organelle that helps process and package proteins and lipid molecules, especially those that are to be secreted outside the cell, packaging them into vessicles. They also make and secrete mucus. Therefore, goblet cells lining the intestinal tract that secrete mucus will have an abundance of Golgi apparatus.

Ribosomes are cell organelles whose main function is to synthesize proteins, both for intracellular and extracellular purposes. Proteins such as hormones, enzymes etc, are synthesized by the ribosomes. Therefore, pancreatic cells that are responsible for creating several digestive enzymes (proteins) will have an abundance of ribosomes.

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3 years ago

An axon is a. a layer of fatty tissue that encases the fibers of many neurons. b. the extension of a neuron that carries message

Sati [7]

Answer:

option b the extension of a neuron that carries messages away from the cell body

3 0

3 years ago

Suppose a gene has two alleles, one of which is dominant over the other. An individual whose genotype is for the recessive allel

Trava [24]

Answer:

This question is incomplete, the options are:

A. Two copies of the allele that determines phenotype whenever the allele is present

B. Two copies of the allele whose effect is hidden unless the other allele is absent

C. One copy of the allele that determines phenotype when present and one copy of the other allele

D. One copy of each of two alleles that both contribute equally to determining phenotype

The answer is B.

Explanation:

According to Gregor Mendel, a Gene comes in two alternative forms called ALLELES. One allele called the DOMINANT ALLELE is capable of masking the phenotypic expression of the other called the RECESSIVE ALLELE. The dominant allele will always express itself whenever it is present. However, a recessive trait will only be expressed when two alleles for recessiveness occur in the gene.

An individual whose genotype is for the recessive allele will have two copies of the allele whose effect is hidden unless the other allele is absent. This means that in that particular gene, the two present alleles will be recessive alleles.

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4 years ago