Can you distinguish the differences between diffusion and facilitated diffusion?

1 answer:

5 0

In simple diffusion, some molecules can move in and out of the plasma membrane without the use of energy along the concentration gradient. These molecules include carbon dioxide, oxygen, water and others. While in facilitated diffusion, carrier/channel proteins are needed to aid the molecules across the concentration gradient.

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How is the ATP produced in glycolysis like earning a return on an investment ?

telo118 [61]

Glycolysis is the first step of cellular respiration - the process comprised of series of reactions in which energy is extracted from glucose molecules. The process of glycolysis is almost same in all living organisms.

If we quickly overview the process of glycolysis, we see that it is a process of earning ATPs as a return on ATP investment, why?

2 ATP molecules are invested during the first or preparatory phase pf glycolysis.
2 ATP molecules are formed for each glyceraldehyde 3-phosphate molecule. Therefore, total four ATP molecules are produced.
Other than ATP, 1 NADH + H+ is also produced for each molecule of glyceraldehyde 3-phosphate.

Therefore,total amount of 2 NADH and 4ATP molecules are produced.

But since, there was an investment of two ATPs during the preparatory phase of glycolysis. Therefore, a total of 4-2=2 ATPs is formed/ So it is like an earning on an investment.

Hope it help!

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Taya2010 [7]

Answer:

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Explanation:

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Hello I` m Leonardo Favio

MrMuchimi

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