(Solved) glycolysis; easy to understand?

hellohi

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12 years ago

Hi, I have a quiz coming up really soon about Glycolysis. When I try to go through my notes, I can't really understand it. Could you please, put it in very simple terms so I can get it? I really suck at biology O_o How does it turn from glucose to fructose? Thanks in advance.

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biolove

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12 years ago

hah I know what you mean, biology can be hard to conceptualize without any visuals!

Have you looked at this?

https://biology-forums.com/index.php?action=gallery;sa=view;id=328

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hellohi Author

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12 years ago

I still don't get it:( I feel stupid:(

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biolove

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12 years ago

First you start off with glucose.

In order to break glucose down, 2-ATP molecules are required. The ATP molecules power enzymes that - once activated - convert glucose into fructose 1,6-bisphosphate. The word bisphosphate means that there are two phosphates attached to the molecule. Fructose 1,6-bisphosphate is split into dihydroxyacetone phosphate (DHAP) and glyceraldehyde 3-phosphate (G3P) in steps 4 and 5. The isomerase enzyme in this step immediately converts DHAP into G3P, resulting in two molecules of G3P. In step 6, two NADH molecules are produced, one from each of the two G3P molecules processed. Two ATP molecules are produced by substrate-level phosphorylation in step 7, one ATP for each of the 1,3-bisphosphoglycerate (BPG) molecules processed. In step 10, two more ATP molecules are formed by substrate-level phosphorylation
as two molecules of phosphoenolpyruvate (PEP) are converted into two pyruvate molecules.

Does this description help Face with Stuck-out Tongue

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hellohi Author

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12 years ago

Yes, it really does! What is a substrate-level phosphorylation though?

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biolove

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hellohi Author

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12 years ago

Thanks for your help!

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biolove

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12 years ago

Here: Substrate-level phosphorylation

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hellohi Author

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12 years ago

Quote from: biolove (12 years ago)

Here: Substrate-level phosphorylation

Thank you, I got it the first time:)

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mam75

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12 years ago

This site explains glycolysis:www.johnkyrk.com/glycolysis.html

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hellohi Author

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#10

12 years ago

Ah thank you, I already did my quiz and got 90%;P thanks:)

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lewis

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12 years ago

Quote from: hellohi (12 years ago)

I already did my quiz and got 90%

Good job buddy, keep it up and make us proud Slight Smile

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hellohi Author

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#12

12 years ago

Thank you;) I will!

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