Dr. Amin F. Majdalawieh NAME: 13. The final acceptor of electrons in anaerobic b
ID: 136453 • Letter: D
Question
Dr. Amin F. Majdalawieh NAME: 13. The final acceptor of electrons in anaerobic bacteria is A. Lactate B. Ethanol C. NADH D. None of the above E. All of the above 14. In lactic acid fermentation, pyruvate is converted into lactate by the catalytic activity of A. Alcohol dehydrogenase (ADH) B. Alcohol decarboxylase (ADC) C. Lactate dehydrogenase (LDH) D. Pyruvate dehydrogenase (PDH) E. Pyruvate decarboxylase (PDC) 15. In reaction 2 of glycolysis, glucose-6-phospahte (G6P) is converted into fructose-6-phosphate (F6P A. Kinase B. Phosphatase C. Isomerase D. Dehydrogenase E. Carboxylase 16. In reaction 9 of glycolysis (2-phosphoglycerate phosphoenol pyruvate), the forward reaction can be more favored if A. 12-phosphoglycerate] increases B. [phosphoenolpyruvate] increases C. [2-phosphoglycerate] decreases D. Two of the above E. All of the above 17. Acetyl-CoA turns glycolysisand turns gluconeogenesis A. On, On B. Off, Off C. On, Off D. Off, On E. It depends on the cell type 18. The major control point in glycolysis is the on catalyzed by A. Aldolase (ALD) B. Phosphofructokinase (PFK) C. Phosphoglycertae mutase (PGM D. Enolase (Eno) E. Triose Phosphate Isomerase (TPI)Explanation / Answer
13. Correct answer:- (D) None of the above
Explanation-Anaerobic respiration is the formation of ATP in the absence of oxygen.
-it involve respiratory electron transport chain, but without using oxygen as the terminal electron acceptor.
-here final electron acceptor are sulfate,nitrate etc are used.
14. Correct answer:- (C) lactate dehydrogenase
Explanation- pyruvic acid is converted to lactic acid by Lactate dehydrogenase enzyme.
15. Correct answer:-(C) Isomerase
Example :-conversion of glucose-6-phosphate to fructose-6-phosphate is an isomerization reaction.
- This reaction occurs with the help of the enzyme phosphoglucose isomerase.
16. Correct answer:- (A) [2-phoshglycerate] increase
Explanation-According to Le Chatelier's Principle, if we add more reactants then the forward reaction is favored.
17. Correct answer:-(D) off, on
18. Correct answer:- (B) Phosphofructokinase (PFK).
Explanation:-In glycolysis enzymes catalyzing essentially irreversible reactions are potential sites of control.
- In glycolysis reactions catalyzed by hexokinase, phosphofructokinase, and pyruvate kinase are irreversible; hence, these enzymes would be control point.
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