Question

42. The end result of glycolysis includes the a creation of 38 molecules of ATP. b. reduction of eight molecules of NAD to NADH. c.formation of two molecules of pyruvate. d. conversion of one molecule of glucose to lactic acid. e. None of the above 43. During the energy investing portion of glycolysis, the phosphates from ATP molecules are a. added to the first and sixth carbons of glucose. b. added to the second and fourth carbons of glucose. c. wasted, as an energy investment in glucose. d used to make pyruvate from glucose e used to make lactate from glucose. 44. Substrate-level phosphorylation is used to produce ATP in the absence of O;. This process depends on to regenerate NAD a glycolysis b. fermentation c. chemiosmosis d. proteolysis e. pyruvate oxidation 45. The main control point of glycolysis is the glycolytic enzyme a. phosphofructokinase. b. acetylfructokinase. c. oxaloacetate convertase. d. isocitrate dehydrogenase. e kinase. 46. The respiratory electron transport chain a is located in the mitochondrial matrix b. includes only peripheral membrane proteins. c. always produces ATP. d. oxidizes reduced coenzymes. e operates simultaneously with fermentation 47. Overall, four molecules of ATP are produced by glycolysis. However, the products of glycolysis are two ATP molecules, two pyruvate molecules, and two NADH molecules. The ATP values do not match because a. glucose metabolism is inefficient b. glucose phosphate is formed from fructose phosphate. c. glucose is degraded to CO. d. two ATP are invested in the process of glycolysis e. None of the above

Answer 1

42. The answer is c. formation of two molecules of pyruvate.

The name Glyco means Glucose and lysis menas cleave. During glycolysis, the one molecule of 6carbon gluocse undergoes several reactions and finally converts in to two molecules of 3carbon pyruvic acid.

43. The answer is . added to the first and sixth carbon of glucose.

The first and third steps of glycoslysis are the energy investing portions. During the first step the glucose undergoes phosphorelation and truns in to glucose 6 phosphate, later it turns in to fructose 6 phosphate, this fructose 6 phosphate undergoes phosphorelation and truns in to fructose 1,6 bi phosphate.

44. The answer is a. Glycolysis.

In substrate level phosphoreltion, in the ATP formation doesnot depend on ETS and oxygen. In glycolysis, During the conversion on 1,3 DI PGA to 3PGA and PEP to pyruvic acid two molecules of ATP will be produced through substrate level of phosphorelation.

45. The answer is a. Phosphofructokinase.

46. The answer is d. Oxidized the reduced coenzymes.

47. The answer is d. two ATP are invested in the process of glycolysis. during the first and thrird energy investiment phase of the glycolysis. so, the net ATP molecules are 2ATPs. so, the total products from glycolysis are
2ATP, 2NADH and 2 Pyruvic acid molecules.