Question

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45) Which of the following is true of cyclic photophosphorylation? (1 pts) Water is split to produce oxygen. NADP+ is reduced directly at the end of a liner O-R system. Electrons emitted during radiant excitation of bacteriochlorophylls are retunred through a cyclic O-R system O None of the above are correct. 46) Which of the following is true of the glycolytic pathway? (1 pts) The pathway begins with glucose. The pathway ends with pyruvate. The pathbegins with a 6-carbon compound and ends with two 3-carbon compounds. All of the above are correct. (1 pts) 47) Reduction of NAD+ in the Kerb's cycle is countered by the oxidation and formation of three ATP's in oxidative phosphorylation. O True O False 48) When an organic compound serves as a final hydrogen acceptor the process is called (1 pts) aerobic respiration anaerobic respiration O fermentation O glycolysis O cytochrome transport

Answer 1

Ans. 45. In cyclic phosphorylation when electron gets excited, it leaves chlorophyll then travel through electron transport chain and again comes back to chlorophyll ( a reaction centre) and complete the process of ATP synthesis. In this it completes the whole cycle. While in non cyclic phosphorylation water breaks down and produce oxygen and NADP+ reduces to form NADPH.

So, correct option will be none of the above are correct.

Ans 46. Glycolytic pathway is metabolic pathway starts from glucose through which organisms extract energy in the form of ATP and it leads to formation of end product of 2 molecules of pyruvate. Glucose is a 6 carbon compound whereas pyruvate is a 3 carbon compound.

So the correct option is all of the above options are correct.