SPARCO 01374 (b) matrix (d) thylakoid space 33. In Calvin cycle of photosynthesi
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SPARCO 01374 (b) matrix (d) thylakoid space 33. In Calvin cycle of photosynthesis, CO are reduced to produce organic compounds such as glucose. What cofactor is the electron donor for carbon fixation? (a) NADPH (b) NADIH 120 4. In the elactron anapori ahain in chlorcoplasts. the oretectrons comes from . (e) NADPH (b) glucose 35. Cellular respiration can take place in both animal cells and plant cells a)True (b) False 36. What is the net number of activated carrier molecules NADH produced in citric acid cycle from one glucose molecule? (a) 6 NADH (b) 4 NADH (c) 3 NADH (d2 NADH 37. Which of the following cells rely exclusively on glycolysis to supply them with ATP? a) aerobic cells (b) anacrobic cells (c) animal cells (d) plant cells 38. The high energy phosphoanhydride bond in to break and ATP is energy a) easy, releases (c) easy, requires requires (d) hard, releases 39. The enzyme in glycolysis that requires ATP is a an aldolase (c) a kinase (b) an isomerase (d) a dehydrogenase 40. Fatty acids can be used in cellular respiration by first being converted into (a) oxaloacetate () pyruvate (b) acetyl-CoA glucose 41. How many CO2 molecules an acetyl-CoA can produce after going through the Krebs cycle? (a)1 (b) 2 (c) 3 42. The one that can use the electron transport chain to build up a proton gradient which then drives the production of ATPs through ATPase is (a) fermentation (c) cellular respiration (b) Photosynthesis both b and c Remember to write your name on the Scantron paperExplanation / Answer
33) Answer: a: NADPH2 ( in Calvin cycle carbohydrate is produced from Co2 by using electrons donated by NADPH2 and utilising energy source as ATP.
34) Answer: a) H2O: Oxygen-evolving complex oxidises the water and donates its electrons to PS-II in the non-cyclic photophosphorylation in chloroplasts. these electrons transported across membrane until they reach NADP which is the final electron acceptor.
35) Answer: a) True: cellular respiration is the process by which the carbohydrate is the breakdown and energy is produced. It is common in plants and animals.
36) Answer: a) 6 NADH2: in citric acid cycle there are 3 NADH2 produced, but from one glucose two pyruvates produced from 2 pyruvates 2 acetyl-choline produced. Hence, from 2 acetyl-choline 6 NADH2 produced.
37) Answer: b) anaerobic cells: the cellular respiration is a redox reaction which needs oxygen in which carbohydrate depleted into Co2 and with the production of ATP. But the first step in cellular respiration which is nothing but glycolysis is independent of oxygen requirement and occurs in the cell cytoplasm. Hence the anaerobic cells depend on glycolysis for their energy sources.
38) Answer: a) hard, releases; anhydrate bond breaking is difficult and it requires activation, but the ATP -ADP conversion releases energy in subsequent gamma phosphate hydrolysis.
39) Answer: c) kinase; In glycolysis, phosphofructokinase enzyme utilises ATP for phosphorylating fructose 6-phosphate into fructose 1-6 bisphosphate.
40) Answer b) acetyl CoA; fatty acids converted into acetyl CoA by beta oxydation and enters into citric acid cycle to produce energy.
41) Answer: b; 2; two co2 produced from acetyl CoA during the citric acid cycle.
42) Answer d: both b and c: the electron transport in photosynthesis and citric acid cycle establish proton gradients across the organellar membrane and this gradient drives coupling of ATP synthesis.
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