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3 years ago

describe at least three different functions of proteins and explain how the shape of a protein affects its function

1 answer:

8 0

Proteins help with acting as structural components in the body, speeding up chemical reactions, and transporting substances around the body. Proteins are made up of amino acids, which create enzymes. Enzymes are often affected by environmental factors in the body such as concentration, temperature, and pH.
Proteins are very important for DNA and RNA. (ribonucleic acid)

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Question 8

Bumek [7]

Answer:

biomass

Explanation:

its biomass bc biomass is transferred thru each trophic level

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5 0

3 years ago

Why is it so difficult to breathe when snorkeling at a depth of 1?

Mamont248 [21]

Because your lungs get inflated like a balloon they become compressed when submerged in water and the air within is compressed. Air will not itself flow from one region of low pressure into a region of higher pressure. The diaphragm in one's body reduces lung pressure to permit breathing, but limit is strained when nearly 1m below the water surface. It is exceeded at more than 1,m.

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7 0

3 years ago

An AAbb strain is crossed to an aaBB strain and the resulting progeny self-crossed. If A andB are located 10 cM apart from each

skelet666 [1.2K]

Answer:

20.3%

Explanation:

Given that:

An AAbb strain is crossed to an aaBB strain

i.e.

AAbb × aaBB

gametes Ab aB

For F₁

generation;

If the resulting progeny are now self-crossed.

We know that the genetic distance between these two genes on the same chromosome is said to be 10 cM.

i.e. the recombinant gene = 10%; Hence, the parental gene will be (100 - 10)% = 90%

Ab × aB = Aa AB ab Bb

From above; the parental gene;

Ab and aB = 90% with each being 45%

i.e. Ab = 45% and aB = 45%

while the recombinants genes are:

AB and ab = 10%

i.e. AB = 5% and ab = 5%

Finally; the percentage of aaBB is = aB% × aB% × 100%

the percentage of aaBB is = 0.45 × 0.45 × 100%

the percentage of aaBB is = 20.25% ≅ 20.3%

8 0

3 years ago

Question 15 of 20

Alisiya [41]

Answer: B

Explanation:

3 0

3 years ago

Read 2 more answers

The ____________ in the alveoli is 40 mm Hg and that of the blood entering the pulmonary capillaries is ____________ . This caus

Oxana [17]

Answer:

The PCO₂ -carbon dioxide partial pressure- in the alveoli is 40 mm Hg and that of the blood entering the pulmonary capillaries is 45 mmHg. This causes carbon dioxide to diffuse down its partial pressure gradient from the blood into the alveoli.

Explanation:

Gas exchange is a physiological process that involves the entry of oxygen into the body and tissues and the exit of carbon dioxide, a product of metabolic reactions.

At the pulmonary level, gas exchange occurs between the alveoli and the alveolar capillary, and the diffusion of gases across the alveolar-capillary barrier is dependent on a pressure gradient due to the partial pressure of gases.

In the case of CO₂ the diffusion goes from where the partial pressure is higher to where it is lower, i.e. from the alveolar capillary, where the PCO₂ is 45 mmHg, to the pulmonary alveolus, where the PCO₂ is 40 mmHg.

Learn more:

Gas exchange brainly.com/question/4469204

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3 years ago