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3 years ago

Which feature is

Biology

1 answer:

Yanka [14]3 years ago

7 0

Answer:

C. Coupled reactions establish an electrochemical gradient across a membrane.

Explanation:

During cellular respiration in mitochondria, and during photosynthesis in chloroplasts, the electron transport chain requires a proton gradient to pump protons across the membrane by active transport.
Protons flow back across the membrane by facilitated diffusion through ATP synthase, which utilizes them to phosphorylate ADP to ATP.
This process of ATP synthesis by harnessing the elctrochemicaal gradient geenrated by the diffusion of protons across the biological membrane through ATP synthase is called chemiosmosis.

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Do you think the Earth has a fixed carrying capacity?

Andrei [34K]

Yes, because there is only so much weight it can hold.

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3 years ago

Directions: Consider a pedigree that is tracking an autosomal recessive trait, where two recessive alleles (tt) result in the in

Talja [164]

Answer:

I think this should be the chart you were interested in...

Explanation:

Individual Shape in shaded

phenotype pedigrees

Male with gen. TT PTC taster square No

Male with gen. Tt PTC taster square No

Male with gen. tt Non-taster square Yes

Female with gen. TT PTC taster Circle No

Female with gen. Tt PTC taster Circle No

Female with gen. tt Non-taster Circle Yes

*gen- genotype

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3 years ago

Oxygen-poor blood flows out of the heart and into the lungs. Nutrients and oxygen are sent to other cells and parts of the body.

emmasim [6.3K]

Answer:

It is C

Explanation:

I had this on my test last week

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3 years ago

f a plant has a mutation, and does not produce any photosynthetic pigments, what do you predict will happen to that plant

nydimaria [60]

Answer: Can not get carbohydrates and will die from the lack of energy!

Explanation: The plant will be unable to produce carbohydrates and will die quickly from the lack of energy and because green light is not absorbed by the photosynthetic pigments.

5 0

3 years ago

1. In a pedigree, a square represents a male. If it is darkened he has hemophilia; if clear, he had normal blood

coldgirl [10]

Answer:

a, 8

b, 3

Explanation:

If the pedigree you are referring to is the one that is attached then the answer would be:

A pedigree shows how a trait is passed on throughout generations. Like it says in the question, the squares represent males. If the square isn't shaded in, then that means they are unaffected by the trait or normal. If it is shaded, they are affected.

All you need to do for the first question is count the number of squares you see in the whole pedigree. In this case, there are 8.

The second one is asking how many are affected, or have hemophilia. You need to count the number of squares that are shaded in. In the pedigree, we see 3.

4 0

3 years ago