Answer Selected Answer thylakoid membrane stroma Correct Answer thylakoid

Answer selected answer thylakoid membrane stroma

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Answer Selected Answer: thylakoid membrane; stroma Correct Answer: thylakoid membrane; stroma Response Feedback: The photosystems are located in the thylakoid membrane; the Calvin cycle reactions occur within the semifluid stroma of the chloroplast. Question 19 1 out of 1 points Replacement electrons for the reaction center of photosystem II are derived from __________. Answer Selected Answer: H 2 O Correct Answer: H 2 O Response Feedback: Electrons to replace the ones lost from the reaction center of photosystem II are derived from water as it is split into an oxygen atom and two H + ions. Question 20 1 out of 1 points During photosynthesis, ___________ is oxidized, while ___________ is reduced. Answer
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Selected Answer: water; carbon dioxide Correct Answer: water; carbon dioxide Response Feedback: Photosynthesis can be simplified to a redox reaction in which electrons are removed from water (it is oxidized), and transferred to carbon dioxide, which is then reduced. Question 21 0 out of 1 points In animals, lactate forms from fermentation. Lactate ________. Answer Selected Answer: can be used as an energy source in animals Correct Answer: is stored in the muscle for future energy use Response Feedback: During fermentation in animal cells, the pyruvate formed by glycolysis accepts two hydrogen atoms and is reduced to lactate. Notice in Figure 7.11 that 2 NADH pass hydrogen atoms to pyruvate, reducing it. It is beneficial for pyruvate to be reduced to lactate when oxygen is not available because this reaction regenerates NAD+, which can then pick up more electrons during the earlier reactions of glycolysis. This keeps glycolysis going, during which ATP is produced by substrate-level ATP synthesis. Question 22 0 out of 1 points A new organism is discovered which contains a super enzyme that requires no ATP to split glucose into pyruvate but cannot function if oxygen is present. What is this organism's net production of ATP from one molecule of glucose? Answer Selected Answer: 2 Correct Answer: 4 Response Oxygen is not present, therefore, the organisms would go through
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Feedback: fermentation. The 2 molecules of ATP that are normally needed in the energy investment phase of fermentation are no longer utilized, therefore, there is a net gain of 4 ATP during fermentation instead of the normal net gain of 2 ATP. Question 23 1 out of 1 points By-products of cellular respiration include _____. Answer Selected Answer: carbon dioxide and water Correct Answer: carbon dioxide and water Response Feedback: Carbon dioxide and water are both released as glucose is broken down. ATP is the desired product. Question 24 1 out of 1 points In cellular respiration, most ATP produced directly as a result of ______. Answer Selected Answer: the electron transport chain Correct Answer: the electron transport chain Response Feedback: Most of the ATP produced comes from the electron transport chain and the ATP synthase complex. Per glucose, 10 NADH and 2 FADH 2 take electrons from glycolysis and the citric acid cycle to the electron transport chain. The maximum number of ATP produced by the chain is
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