Question

High energy compounds that undergo oxidation to release energy are

1.) ATP and Acetyl-CoA

2.) Ac-CoA and FADH2

3.) ATP and NADH

4.) NADH and FADH2

The portion of transmembrane proteins that spans bilayer membrane in rich in

1.) non-polar amino acids

2.) polar, uncharged amino acids

3.) amino acids which are charged at pH 7

4.) hydrophilic amino acids

Substrate level phosphorylation occurs during glycolysis

1.) step 6, during the formation of 1,3 bisphosphoglycerate from GAP

2.) step 1, during formation of glucose-6-phosphate from glucose

3.) step 3, during formation of fructose-1,6 bisphosphate from fructose-6-phosphate

4.) step 9, formation of phosphoenolpyruvate from 2-phosphoglycerate

The keto form of pyruvate Is more stable than the enol form because

1.) keto form has higher bond energy

2.) keto form has polar C double bond O group

3.) keto form has more saturated carbons

4.) enol form has polar -OH group, making it highly unstable

Answer 1

Answer for question number 1 : The correct option is A (ATP and Acetyl-coA)

Explanation : High energy compounds are also called a energy rich compounds which upon hydrolysis releases lot of enery which is used up in the endergonic reactions which requires the input of energy. Both ATP and Acetyl-CoA has high negative free energy of hydrolysis, which means they release lot of energy upon hydrolysis. Except acetyl-CoA, most of the high energy compounds contains phosphate groups.