During glycolysis, glucose (is/are) ___ and NAD (is/are) ___. a. oxidized, reduc

Question

During glycolysis, glucose (is/are) ___ and NAD (is/are) ___. a. oxidized, reduced b. reduced, oxidized c. both accept theta^- d. both donate theta^+ e. not redox pairs. Which of the listed statements describes the results of the following reaction? C_6H_12O_6 + 6 O_2 rightarrow 6 CO_2 + 6 H_2O + Energy a. C_6H_12O_6 is oxidized and O_2 reduced b. O_2 is oxidized and H_2O is reduced c. CO_2 is reduced and O_2 oxidized d. O_2 is reduced and CO_2 is oxidized e. This reaction best describes photosynthesis. Which of the following is NOT required in fermentation? a. glucose b. ATP c. pyruvate d. O_2 e. lactic acid Which of the following is NOT required in cellular respiration? a. glucose b. ATP c. pyruvate d. O_2 e. lactic acid The most important function of fermentation is to a. regenerate pyruvate b. regenerate NAD^+ c. regenerate glucose d. regenerate CO_2 e. regenerate O_2 Match the stage of photosynthesis with the best description. A. Relies on RuBP in Calvin Cycle B. Uses photons of light to excite e^- C. Day/night separation of CO_2 fixation D. Excites e- to generate H+ gradient to make ATP E. Makes an organic acid for CO_2 fixation

Explanation / Answer

51. The process of breakdown of glucose to produce energy is known as glycolysis. During glycolysis glucose is oxidized and the coenzyme NAD is reduced. option a is correct.

52. C6H12O6 + 6O2 6CO2 + 6H2O+ Energy

The above equation represents the aerobic respiration. In aerobic respiration, the carbohydrate or glucose molecules is oxidized by losing hydrogen atoms and the oxygen gain and attach to hydrogen atoms is reduced. Therefore, option a is correct.

53. Fermentation is the process of breakdown of sugars to ethanol and carbon dioxide in absence of oxygen. It is an anaerobic process in which oxygen is absent. During fermentation, glycolysis takes place and the pyruvate produced is either converted to ethanol or lactic acid. Therefore, option d is correct.

54. In cellular respiration in presence of oxygen, glucose is broken down to produce CO2 , H2O and energy in the form of ATP. In absence of oxygen, pyruvate produced during glycolysis is either converted to ethanol or lactic acid. Therefore, option e is correct.

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