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Effectus [21]
3 years ago
7

​ In the light-dependent reactions of photosynthesis, how do hydrogen ions get back into the stroma?

Biology
1 answer:
Alika [10]3 years ago
5 0

Answer:

In the light-dependent reactions, water molecules do not give up electrons easily so the hydrogen ions remain in the thylakoid compartment. The movement of the hydrogen ions back to the stroma is due to the gradient.  

The hydrogen ions have energy as they flow down the gradient that takes place due to the chemiosmosis process, oxygen combines and flows or diffuse.

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Two true-breeding stocks of pea plants are crossed. one parent has red, axial flowers and theother has white, terminal flowers;
xxTIMURxx [149]
This is a typical case of a dihybrid cross. 
From the phenotype of the offspring, we can conclude that the gene for the red color of the flower and the gene for the axial position of the flower are dominant.
Since we know that the ratio of phenotypes in a dihybrid cross of independently inherited alleles is
9(dominant for both traits)
3(dominant for one trait, recessive for the other)
3(dominant for the second trait, recessive for the other)
1(recessive for both traits)
we can expect 3/16 of the f2 generation to be dominamt for one trait and recessive for the other (red, terminal flowers), or to be precise 190 individuals.
7 0
4 years ago
Five factors that influence the value of a fuel?
Allushta [10]

The five are costs, availability, safety, content, and byproducts of the fuels use. Hope I helped!

7 0
3 years ago
Growth hormone is secreted by the ________ while we sleep.
mihalych1998 [28]
The answer would be pituitary gland.

Completed sentence: Growth hormone is secreted by the pituitary gland while we sleep.
4 0
3 years ago
Name three ways that humans benefit from the use of seedless plants
AleksandrR [38]

Answer:

They support life by being the first vegetation to spring up on harsh terrain where soil is scarce. Even when they perish, seedless plants give back to nature. Certain seedless plants like moss and liverworts actually leave behind a layer of fertile soil for other plants when they perish.

Explanation:

Seedless plants have historically played a role in human life through uses as tools, fuel, and medicine. Dried peat moss, Sphagnum, is commonly used as fuel in some parts of Europe and is considered a renewable resource.

6 0
3 years ago
How are complementary strands of DNA held together?
Damm [24]

Answer:

I believe it is D

Explanation:

Complementary base pairs are held together by hydrogen bonds. Adenine and Thymine go together. Cytosine and Guanine go together.

6 0
3 years ago
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