just give the answer, don\'t need explain, thank you ! 11) Which kind of metabol
ID: 210880 • Letter: J
Question
just give the answer, don't need explain, thank you !
11) Which kind of metabolic poison would most directly interfere with glycolysis? A) an agent that reacts with oxygen and depletes its concentration in the cell B) an agent that binds to pyruvate and inactivates it C) an agent that closely mimics the structure of glucose but is not metabolized D) an agent that reacts with NADH and oxidizes it to NAD 12) Which of the following processes is driven by chemiosmosis? A) substrate-level phosphorylation B) oxidative phosphorylation C) ATP hydrolysis D) reduction of NAD+ to NADH 13) Which of the following statements best describes the primary role played by oxygen in cellular respiration? A) It yields energy in the form of ATP as it is passed down the electron transport chain. B) It oxidizes glucose to form two molecules of pyruvate. C) It serves as an acceptor for carbon, forming Co2 in the citric acid cycle. D) It serves as the final acceptor for electrons from the electron transport chain. 14) Which of the following metabolic processes take place in the cytosol of a eukaryotic cell? A) glycolysis and fermentation B) fermentation and chemiosmosis C) oxidation of pyruvate to acetyl CoA D) citric acid cycle 15) In autumn, chlorophyll is degraded in the leaves of deciduous trees. Why do the leaves change color to shades of yellow, orange, or red? A) Sugars from sap fill the leaves prior to winter. B) Degraded chlorophyll changes into many other colors C) In the absence of photosynthesis, the leaves produce energy exclusively by aerobic cellular respiration. D) Other pigments such as carotenoids are still present in the leaves 16) Which of the following events accompanies absorption of energy by chlorophyll molecules of the reaction-center complex? A) ATP is synthesized from the energy absorbed.B) An electron is excited C) NADP+ is reduced to NADPH. D) A molecule of water is split. 17) Which of the following processes would be most directly affected if a thylakoid membrane is punctured so that the interior of the thylakoid is no longer separated from the stroma? A) splitting of water B) flow of electrons from photosystem II to photosystemI C) synthesis of ATP D) reduction of NADP+ 18) Which of the following statements best describes the relationship between photosynthesis and cellular respiration? A) Cellular respiration runs the biochemical pathways of photosynthesis in reverse B) Photosynthesis stores energy in complex organic molecules; cellular respiration releases energy from complex organic molecules. C) Photosynthesis occurs only in plants; cellular respiration occurs only in animals. D) Photosynthesis is catabolic; cellular respiration is anabolic. 19) Carotenoids are often found in foods that are considered to have antioxidant properties in human nutrition. What related function do they have in plants? A) They serve as accessory pigments to increase light absorption. B) They protect against oxidative damage from excessive light energy C) They shield the sensitive chromosomes of the plant from harmful ultraviolet radiation. D) They reflect orange light and enhance red light absorption by chlorophyll. 20) Which of the following processes is most directly driven by light energy? A) creation of a pH gradient by pumping protons across the thylakoid membrane B) carbon fixation in the stroma D) removal of electrons from chlorophyll molecules C) reduction of NADP+ moleculesExplanation / Answer
11) C) an agent that closely mimcs the structure of glucose but is not metabolized.
12) C) ATP hydrolysis
13) B) It oxidizes glucose to form 2 molecules of pyruvate.
14) A) Glycolysis and fermentation.
15) D) Other pigments such as carotenoids are still present in leaves.
16) B) An electron is excited.
17) C) Synthesis of ATP.
18) B) Photosynthesis stores energy in complex organic molecules, cellular respiration releases energy from complex organic molecules.
19) B) They protect against oxidative damage from excessive light energy.
20) B) Carbon fixation in the stroma.
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