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In: Biology

1.) In the first step of glycolysis, the cell SPENDS an ATP and phosphorylates glucose as...

1.) In the first step of glycolysis, the cell SPENDS an ATP and phosphorylates glucose as soon as it enters the cell. Why does the cell do this? Give two reasons!

2.) Speculate on why glycolysis, which is the beginning point of many catabolic pathways does not require oxygen.

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Expert Solution

Answer

DETAILED ANSWERS AND EXPLANATION OF QUESTIONS ARE GIVEN IN FOLLOWING IMAGE.

Que 1-reasons

  • to prevent movement of glucose out of cell
  • hexokinase has high afdinity and low km towards glucose at nano concentration.

Que 2-answer

  • When glycolysis evolved during past back history there was no oxygen in atmosphere.
  • high energy electrons released by glycolysis can not be absorbed by oxygen so it can be absorbed by electron carrier molecule called as NAD+.

gladiator answered 1 year ago
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