Biology Chapter 6 Test Part 2 – Flashcards
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Which H+ has just passed through the inner mitochondrial membrane by diffusion?
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hydrogen ion D
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In the electron transport chain, the final electron acceptor is
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an oxygen atom.
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Marathon runners are long-distance runners (marathons are races that are 26.2 miles long). Studies have shown that the muscles of marathon runners contain an abundance of slow-twitch fibers.
Which of the following statements about these fibers is true?
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Slow-twitch fibers have lots of mitochondria to make ATP aerobically.
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During redox reactions,
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electrons are lost from one substance and added to another substance.
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Which of the following statements regarding the chemical grooming of pyruvate is false?
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Each pyruvate molecule has a CO2 added and then joins with an NADH.
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Pyruvate
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forms at the end of glycolysis.
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Which of the following statements about the energy yield of aerobic respiration is false?
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Oxidative phosphorylation resulting from 1 glucose molecule yields about 12 ATP molecules.
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Which of the following statements regarding the movement of electrons during cellular respiration is true?
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O2 is reduced when it accepts electrons and forms water.
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If you consume 1 g of each of the following, which will yield the most ATP?
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fat
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When an organism such as a yeast lives by fermentation, it converts the pyruvate from glycolysis into a different compound, such as alcohol. Why doesn't it secrete the pyruvate directly?
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The conversion is needed to regenerate the molecules needed for glycolysis.
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Arsenic is a poison that binds to a molecule needed to build acetyl CoA. Based on this information, which part of cellular respiration would be stopped if arsenic were ingested?
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itric acid cycle
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As a result of glycolysis, there is a net gain of ________ ATP(s).
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2
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Based on this graph, what is the relationship between metabolic rate and body temperature?
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When metabolic rate drops, so does body temperature.
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Respiration ________, and cellular respiration ________.
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is gas exchange; produces ATP
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The end products of glycolysis include
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NADH.
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The end products of the citric acid cycle include all of the following except
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pyruvate.
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Which of the following are products of cellular respiration?
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energy to make ATP and carbon dioxide
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By-products of cellular respiration include
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carbon dioxide and water.
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Which of the following options lists the stages in cellular respiration in the correct order?
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glycolysis, the citric acid cycle, and oxidative phosphorylation
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During chemiosmosis,
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ATP is synthesized when H+ ions move through a channel in ATP synthase.
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Rotenone is a poison commonly added to insecticides. Rotenone binds tightly with one of the electron carrier molecules in the electron transport chain, preventing electrons from passing to the
next carrier molecule. Insects exposed to rotenone will die because
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they will no longer be able to produce adequate amounts of ATP.
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Fat Away prevents ATP from being made by
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gain of protons; loss of protons
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During cellular respiration, the energy in glucose
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is carried by electrons.
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After glycolysis but before the citric acid cycle,
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pyruvate is oxidized.
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How do cells capture the energy released by cellular respiration?
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They produce ATP.
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Which of the following metabolic pathways is common in aerobic and anaerobic metabolism?
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glycolysis
