38-42 I just want to double check d) piaht cells 38. The high energy phosphoanhy

Question

38-42 I just want to double check

d) piaht cells 38. The high energy phosphoanhydride bond in to break and ATP is (a) easy, releases energy (c) easy, requires (b) hard, requires 39. The enzyme in glycolysis that requires ATP is -(d) hard, releases (a) an aldolase (c) a kinase (d) a dehydrogenase (b) an isomerase 40. Fatty acids can be used in cellular respiration by first being converted into (a) oxaloacetate (c) pyruvate (b) acetyl-CoA(d) glucose 41. How many CO2 molecules an acetyl-CoA can produce after going through the Krebs cycle? (a) 1 (b) 2 (c)3 (d) 4 42. The one that can use the electron transport chain to build up a proton gradient which then drives the production of ATPs through ATPase is (a) fermentation (b) Photosynthesis (c) cellular respiration (d) both b and c

Explanation / Answer

38.a,. It is high energy bond in ATP, once it releases energy by hydrolysis and forms stable ADP.the anhydride bonds of ATP are high energy because they have electrophilic carbonyls that are competing for electrons on the oxygen to have resonance. this competition gets relieved by hydrolysis which is a spontaneous reaction.

generally high energy bonds are weak covalent bonds which release a lot of energy upon hydrolysis.

39.c. Hexokinase, phosphofructokinase

40.b . Acetyl CoA

41.b .

42.d both cellular respiration and photosynthesis.

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