Question

ANSWER TO ALL asap (BIOCHEMISTRY)

The standard reduction potential of cytochrome cl (Fet) is 0.22 V and the standard reduction potential of cytochrome a (Fe3+) is 0.29 V. Is this reaction favorable or not? cytochro cytochrome cl (Fe?") + cytochrome a (Fe) → cytochrome a (Fe?") + cytochrome cl (Fe) A. Favorable B. NOT favorable QUESTION 13 Which of the following is true regarding the activity of phosphofructokinase (PFK)? 1. It is used by glycolysis and gluconeogenesis II. It is allosterically inactivated by AMP III. It is allosterically activated by AMP IV. It is essential for glycolysis. Click Save and Subratio se and submit Chek S ATA to save all anscers. ere to search O É $ e x 9

Answer 1

Ans- 12.) Reduction potential of cytochrome a (0.29V) is higher than reduction potential of cytochrome c1 (0.22V)  means cytochrome a will show more affinity towards electron and will have more tendency to reduce itself. So the reaction is favourable.

Ans-13.) PFK 1 is allosterically activated by AMP.

Ans - Muscles are not able to supply glucose to other tissues because they lack glucose -6 phosphatase (C) , hence glucose is not able to leave the cell because of being charged.

Ans - Net 2 ATP molecules are produced by glycolysis. In actual 4 molecules of ATP are produced in glycolysis ( 2 * 1,3-BPGA to 3-PGA ,

2 * PEP to Pyruvate ) but 2 ATP molecules are utilized during Initial phase of glycolysis

( glucose to glucose-6 phosphate, fructose -6 phosphate to fructose -1,6 - bisphosphate ).so net output is 2 ATP molecules only.