Question

Determine the number of net ATPs produced in the following
situations. Assume that each NADH and FADH2 enter the STE. Be careful, sometimes not
is ATP what you want to determine

Show your calculations and strategies to get the corresponding number.
_______________1. Number of NADH if seven acetyl Co-A molecules enter Krebs.
_______________2. Two molecules of glucose-phosphate enter into glycolysis to produce
pyruvate.
_______________3. Three molecules of glucose in a cell treated with cyanide.
_______________4. Seven molecules of glucose in a yeast under aerobic conditions.
_______________5. Two glucose molecules where hexokinase has been mutated and is not
functional.

Answer 1

_________52.5______1. Number of NADH if seven acetyl Co-A molecules enter Krebs.

One acetyl-CoA produces three NADH molecules per each round of kerbs cycle. So, seven acetyl-CoA molecules produce 21 NADH molecules. Assume that each NADH produce 2.5 ATPs, so, total 63 ATPs are produced.

_____4__________2. Two molecules of glucose-phosphate enter into glycolysis to produce pyruvate.