e. None of the above 7- During which phase (s) of glycolysis is energy consumed
ID: 217632 • Letter: E
Question
e. None of the above 7- During which phase (s) of glycolysis is energy consumed as ATP? a. Phase 1. b. Phase 2 c. Phase 3. d. Phases 1 and 2 e. Phases 2 and 3. 8 8- During which phase (s) of glycolysis is energy produced as ATP a. Phase I b. Phase 2 c. Phase 3. d. Phases 1 and 2. e. Phases 2 and 3. 9- Which of the following glycolytic enzymes produces a high-energy electron carrier? a. Hexokinase. b. Phosphofructokinase-1. c. Glyceraldehyde-3-phosphate dehydrogenase. d. Pyruvate kinase e. Aldolase 10- Which of the following glycolytic enzymes catalyzes a reaction that produces an energy carrier? b. Phosphofructokinase-1. c. Glyceraldehyde-3-phosphate dehydrogenase d. Pyruvate kinase e. c and d. 11- What is the final product of glycolysis in a strict acrobic cell like the brain cell? a. Pyruvate. b. Lactate. c. Ethanol and CO. d. CO2+H20 e. b and c. 12- What is the final product of glycolysis in a muscle cell during strenuous activity? a. Pyruvate. b. Lactate. c. Ethanol and CO. d. CO2+ H20 e. b and c.Explanation / Answer
7) Phase 1 if glycolysis is known as ENERGY INVESTMENT PHASE where two ATP molecules are consumed to convert glucose in to fructose-1,6-bisphosphate.
8) Phase 3 is known as ENERGY GENERATION PHASE or PAYOFF PHASE where four ATP molecules are generated.
9) glyceraldehyde-3-phosphate dehydrogenase produces high energy electron carrier NADH in glycolysis.
10) Except pyruvate kinase(last step of glycolysis), all other given enzymes will be responsible for electron carrier production.
Note: question 9& 10 are similar and confusing .
11) Pyruvate is produced as final product of glycolysis in aerobic cells.
12) Lactate is produced as final product in muscle cells during exercise because When sufficient oxygen is not present in the muscle cells for further oxidation of pyruvate and NADH produced in glycolysis, NAD+ is regenerated from NADH by reduction of pyruvate to lactate.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.