In the conversion of pyruvate to glucose by A. glucose-phosphate B acetyl CoA D.
ID: 78379 • Letter: I
Question
In the conversion of pyruvate to glucose by A. glucose-phosphate B acetyl CoA D. PEP E. citrate The role of enolase in glycolysis is to use to make PEP. A. DHAP B. pyruvate and ATP D. phosphoglycerate What is the basic role of NADH/NAD+? A. energy creation B. transfer of D. substitute for sugars in reactions E. redox reactions The electron transport chain stores energy by A. pumping electrons B. pumping protons D. gluconeogenesis E. synthesis/storage of fat What is the very first enzyme in glycolysis? The first reaction A. ATP synthase B. citrate synthase D. phosphofructokinase E. hexokinase Which of the following enzymes captures energy as ATP in glysolysis? A. Citrate synthase B. hexokinase C. pyruvate kinase What enzyme converts pyruvate to acetyl CoA? A. pyruvate dehydrogenase B. phosphoglycerate C pyruvate kinase D. fumerate reductase E. aconitase The reaction of Acetyl CoA and OAA generates: A. citrate B. succinate C. fumerate E. alpha-ketoglutarate The products of the citric acid cycle are GTP, FADH_2, NADH and one other significant product. A. ATP B. CO_2 C. malate D. glycine E. PEP What is one of the metal cofactors of the enzyme that synthesizes ammonia from nitrogen. A. Zn B. Cr C. Na D. Mo E. CaExplanation / Answer
Answer:
38). C. OAA
Explanation:
The first compound that produced in gluconeogenesis is Oxalo acetate.
Pyruvate + CO2 + ATP + H2O ----OAA + ADP + ip + 2H+
39). D. Phosphoglycerate
Explanation:
The enzyme enolase removes a molecule of water from 2-phosphoglycerate to form phosphoenolpyruvic acid (PEP).
40). E.
Explanation:
At various chemical reactions, the NAD+ picks up an electron from glucose, at which point it becomes NADH. NADH will ultimately transport the electrons to the mitochondria, where the cell can harvest energy stored in the electrons. Then NADH is the reduced form of the molecule NAD+ (oxidized).
41). B. Pumping protons
Explanation:
Protons go down proton pumps and a concentration gradient forms as protons move from the stroma into the membrane space. Protons move down gradient through ATP synthase which forms ATP. The chemical energy stored in ATP.
42). E. Hexokinase.
Explanation:
In the first step of glycolysis, the glucose ring is phosphorylated. Phosphorylation is the process of adding a phosphate group to a molecule derived from ATP by hexokinase
Glucose + ATP ----Hexokinase---- Glucose-6-phosphate + ADP.