18. Which of the following happens during the transition step between Glycolysis

Question

18. Which of the following happens during the transition step between Glycolysis and the Citric Acid Cycle a. Pyruvate is reduced b. Pyruvate is oxidized c. NADH is produced d. ATP is produced e. CO2 is released f. B& C 8 A&D; h. B & E i. A, C & D j. B. C & E of the following is not a key biochemical hub" in cell metabolism, as mentioned in lecture? a. Krebs cycle intermediates b. ATP synthase .Pyruvate d. Acetyl CoA e. All of the above are key biochemical "hubs 24. Because plants are TOTIPOTENT they can: a. have higher rates of sexual reproduction b. produce an entirely new plant from a single living cell, if the conditions are right. c. grow indefinitely, without dying d. grow and reproduce without hormones All of the above. 19. Where is oxygen used in cellular respiration? a. Gly?olysis b. The transition step c. Krebs Cycle d. Electron transport chain e. Both Krebs Cycle & the transition step f. Glycolysis, the transition step & Krebs cycle 8 Krebs cycle and the electron transport chain 25. Plants are sessile, meaning they a. have a haploid life stage b. produce branches up to a certain number, then stop growing are fixed in one location d. produce seeds e. have modular growth 26. A phytomere consists of 20. Where is CO, released in cellular respiration? a, a branch and all its leaves and buds. b. taproot, stem & leaf a. Glycolysis b. The transition step c. Krebs Cycle d. Electron transport chain e. Krebs cycle and the electron transport chain f. Both Krebs Cycle & the transition step g. Glycolysis, the transition step & Krebs cycle a node, internode, axillary bud and leaf e. an apical meristem, zone of elongation and 27. Properties of water that help make it essential for d. node, internode, leaf and flower flower bucd life include: a. It has high specific heat b. It is cohesive and adhesive c. It is an excellent solvent d. It ionizes 21. How much ATP is theoretically made per molecule of glucose from the entire process of cellular respiration? a. 53 b. 36/ All of the above 28. Secondary metabolites: a. Are often used by humans for medicine. b. Help plants with pollinator attraction and pest d. 12 e. deterrence. c. Are often steroids d. Are often alkaloids like terpenoids and phenolics e. All of the above. 22. Why is real amount of ATP made less than theoretical expectation? a. Oxygen depletion slows down the process b. The cell starts running out of ADP to use to make 29. Which term below is mismatched with its function? ATP electron transport chain instead of through ATP synthase a. Amyloplast-starch storageJ b. Thylakoid membrane- equipment for light ?. Some electrons escape in the middle of the // d. Some H+ go directly through the membrane e. All of the above capture in P/S c. Desmotubule-main fiber in primary cell walls d. Chromoplast-pigment storage e. Middle lamella -cement holding cells together

Explanation / Answer

18. (J) pyruvates gets oxidized which results in formation of acetyl-CoA this reaction generate lot of reducing energy in form of NADH and Carbon dioxide is also released.

19. (D) oxygen is final electron acceptor in electron transport chain.thus it is utilized in ETC.

20. (F) both the kreb cycle and transition step involve CO2 formation in cellular respiration.

21. (B) 2 from glycolysis+2 from kreb+approx 32~34 from ETC= ~36-38 ATP/cellular respiration

22. (E) all of the stated reasons are true

23. (E) all of them are hub as they are involved in many metabolic pathways.

24. (B) can give rise to new plant from single cell if condiions provided are right.

25. (C) that means they can not move and are fixed at one point.

26. (C) it originates from shoot apex and is consist of node, internode, axillary bud etc

27. (D) all of the stated qualities of water make it suitable for life

28. (E) all of the given statements regarding secondary metabolites hold true.

29. (C) desmotubule is a tube between cells for transport of certain molecules.

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