2. What is the total yield from one molecule of glucose to two molecules of L-malate?A. 2 ATP/GTP, 6 NADH, 2 FADH₂B. 2 ATP/GTP, 4 NADH, 2 FADH2C. 4 ATP/GTP, 6 NADH, 2 FADH2D. 4 ATP/GTP, 8 NADH, 2 FADH2E. 4 ATP/GTP, 10 NADH, 2 FADH2

Glucose is converted to L-malate via the following pathway: 1. Glycolysis: 1 glucose is converted to…

Answered: 2. What is the total yield from one…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Total number of nadh molecules generated as a result of catabolism of one glucose molecule is a. 4 b. 3 c. 10 d. 6
7. In the ketone body pathway, both acetoacetate and B-hydroxy butyrate are produced and become additional fuel molecules for the organism. a. Define where these molecules are produced (both tissue type and location in the cell) and what tissue they "feed". b. Of these two molecules, which one is considered slightly better in delivering more energy to the target tissue? Why? c. How does acetone, another ketone body, participate in delivering fuel to target tissue? d. If acetoacetate decarboxylase enzyme was mutated and became inactive (zero enzyme activity), how would this affect the ketone pathway during these conditions: į. immediately after a meal, ii. under starvation conditions, iii. during unchecked (not being treated for) type-1 diabetes.
In the absence of oxygen, which of the following compounds will be formed by yeast to regenerate ATP through fermentation? a. ATP, CO2, and lactate b. ATP, CO2, and acetyl CoA c. ATP, NADH, and ethanol O d. ATP, CO2, and ethanol (ethyl alcohol) e. ATP only
Palmitate is a 16-carbon fatty acid. After complete ß-oxidation of one molecule of palmitate, how many molecules of NADH are formed? a. 8 O b. 1 c. 7 O d. 2 O e. 16
1. The enzyme lactate dehydrogenase catalyzes the reaction below. NADH + H* NAD+ OH Pyruvate Lactate NADH absorbs light at 340 nm in the near-ultraviolet region of the electromagnetic spectrum, but NAD' does not. a. Assuming that you have a spectrophotometer that can measure light at this wavelength, qualitatively sketch a plot of A, 340 nm VS. time. How does this plot compare to the one from the experiment on the alkaline phosphatase-catalyzed reaction of p-nitrophenylphosphate? b. Would you use a highly accurate pH meter to monitor the progress of the pyruvate reaction? Why or why not?
Saccharomyces cerevisiae, known as brewer’s or baker’s yeast, is commonly utilized in the fermentation process of wines as it can tolerate high alcohol concentration and very low pH. How many molecules of ATP and carbon dioxide will be produced in one hour if one cell can uptake 200 sucrose molecules in 20 minutes? a. 400 ATP and 400 CO2 b. 800 ATP and 800 CO2 c. 1200 ATP and 1200 CO2 d. 2400 ATP and 2400 CO2
A major connection for sugars in glycolysis is a. glucose-6-phosphate b. fructose-1 6-bisphosphate c. dihydroxyacetone phosphate d. phosphoenolpyruvate
What effect would a decrease on sulfur assimilation have in plants? Select one: a. a decrease in protein synthesis b. a decrease in glutamine concentration c. an increase in photosynthesis d. an increase in glutamine concentration e. an increase in glutathione concentration
2. Why are some enzymes needed only in the gluconeogenesis pathway and not in the glycolysis pathway? 3. Which one of the following reactions only occurs during gluconeogenesis (i.e., not during glycolysis)? a. 1,3-bisphosphglycerate into 3-phosphoglycerate b. Glucose 6-phosphate into fructose 6-phosphate c. Oxaloacetate into Phosphoenolpyruvate d. Phosphoenolpyruvate into Pyruvate 4. An increase in glucagon levels can a. Promote the degradation of glycogen (i.e., glycogenolysis) b. Occurs during the fasting state (starvation) c. Promotes the synthesis of glycogen d. A and B 5. A high school girl who is self-conscious about her appearance has been fasting for several days to fit into a dress she intentionally bought a size too small for a school dance. Which of her organs/tissues is producing the glucose that is being synthesized through gluconeogenesis? a. Red blood cells b. Muscles C. Liver d. Brain
16. To control the rate or the citric acid cycle, the allosteric enzyme citrate sythentase is a. activated by both ATP and ADP b. inhibited by ATP and activated by ADP c. inhibited by ADP and activated by ATP d. inhibited by both ATP and ADP
4. Assume that the following fatty acid is synthesized from acetyl-CoA in the cytosol by fatty acid synthase. Which of the following statements is true? 15 13 11 Coo- 16 14 12 10 A. The last two carbon atoms that are added to the fatty acid are carbon atoms #15 and #16 B. Synthesis of the fatty acid needs 8 molecules of NADPH +H* C. Both A and B D. Neither A nor B
21. WHICH OF THE FOLLOWING ARE PRODUCTS OF THE CITRIC ACID CYCLE?A. ACETYL COA AND NADHB. CO2 AND FADH2C. ACETYL COA AND CO2D. CO2 AND H20 22. WHICH ARE THE FIRST TWO INTERMEDIATES RESPECTIVELY, IN THE CITRIC ACID CYCLE? A. ISOCITRATE AND SUCCINATEB. ISOCITRATE AND ALPHA-KETOGLUTRATEC. CITRATE AND ISOCITRATED. CITRATE AND ALPHA-KETOGLUTRATE 23. IT IS THE SUM OF ALL THE BIOCHEMICAL REACTIONS THAT TAKES PLACE IN A LIVING ORGANISM?A. ANABOLISMB. METABOLISMC. CATABOLISMD. METABOLIC PATHWAY 24. METABOLIC REACTION IN WHICH LARGE BIOCHEMICAL MOLECULES ARE BROKEN DOWN TO SMALLER ONES?A. CATABOLISMB. METABOLIC PATHWAYC. ANABOLISMD. METABOLISM 25. A METABOLIC REACTION IN WHICH SMALL BIOCHEMICAL MOLECULES ARE JOINED TOGETHER TO FORM LARGER ONES?A. METABOLISMB. CATABOLISMC. METABOLIC PATHWAYD. ANABOLISM

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2. What is the total yield from one molecule of glucose to two molecules of L-malate? A. 2 ATP/GTP, 6 NADH, 2 FADH2 B. 2 ATP/GTP, 4 NADH, 2 FADH2 C. 4 ATP/GTP, 6 NADH, 2 FADH2 D. 4 ATP/GTP, 8 NADH, 2 FADH2 E. 4 ATP/GTP, 10 NADH, 2 FADH2