Chapter 9

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Which molecule is metabolized in a cell to produce energy "currency" in the form of ATP?

3.Carbon dioxide
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Which of the following statements about the electron transport chain is true?

1.NADH and FADH2 donate their electrons to the chain.
2.Electrons gain energy as they move down the chain.
3.Water is the last electron acceptor.
4.The electron transport chain is the first step in cellular respiration.
In chemiosmosis, what is the most direct source of energy that is used to convert ADP +Pi to ATP? released as electrons flow through the electron transport chain released from movement of protons through ATP synthase, down their electrochemical gradient released as electrons are transported across the inner mitochondrial membrane released from substrate-level phosphorylation
Which metabolic pathway is common to both fermentation and cellular respiration of a glucose molecule? 1.the electron transport chain 2.synthesis of acetyl CoA from pyruvate 3.glycolysis 4.the citric acid cycle 5.reduction of pyruvate to lactate3The final electron acceptor of the electron transport chain that functions in aerobic oxidative phosphorylation is 1.ADP. 2.oxygen. 3.water. 4.pyruvate. 5.NAD+.2Select the correct statement about cellular respiration. Select the correct statement about cellular respiration. 1.Animals carry out cellular respiration whereas plants carry out photosynthesis. 2.Plants carry out cellular respiration only in organs such as roots that cannot carry out photosynthesis. 3.Cellular respiration and breathing differ in that cellular respiration is at the cellular level, whereas breathing is at the organismal level.3What process occurs in Box A? 1.electron transport and oxidative phosphorylation 2.the citric acid cycle 3.glycolysis 4,oxidative phosphorylation 5.electron transport3What process occurs within Box B? 1.electron transport and oxidative phosphorylation 2.the citric acid cycle 3.glycolysis 4,oxidative phosphorylation 5.electron transport2What molecule is indicated by the letter D? 1.glucose 2.oxygen 3.water 4.ATP 5.pyruvate2Substrate-level phosphorylation occurs _____. 1.In both glycolysis and the citric acid cycle 2.during oxidative phosphorylation glycolysis i4.n the citric acid cycle1The molecule that functions as the reducing agent (electron donor) in a redox or oxidation-reduction reaction _____. 1.gains electrons and gains potential energy 2.loses electrons and gains potential energy 3.loses electrons and loses potential energy 4.gains electrons and loses potential energy3Which of the listed statements describes the results of the following reaction? C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + Energy 1.CO2 is reduced and O2 is oxidized. 2.O2 is oxidized and H2O is reduced. 3.O2 is reduced and CO2 is oxidized. 4.C6H12O6 is oxidized and O2 is reduced.4When a glucose molecule loses a hydrogen atom as the result of an oxidation-reduction reaction, the molecule becomes _____. 1.reduced 2.oxidized oxidizing agent 4.hydrolyzed2When a molecule of NAD+ (nicotinamide adenine dinucleotide) gains a hydrogen atom (not a proton), the molecule becomes _____. 1.dehydrogenated 2.oxidized 3.redoxed 4.reduced4The oxygen consumed during cellular respiration is involved directly in which process or event? 1.accepting electrons at the end of the electron transport chain 2.the oxidation of pyruvate to acetyl CoA 3.the citric acid cycle 4.glycolysis1How many NADH are produced by glycolysis? 1.3 2.2 3.4 4.5 5.12In glycolysis, ATP molecules are produced by _____. 1.oxidative phosphorylation 2.cellular respiration 3.substrate-level phosphorylation 4.photosynthesis 5.photophosphorylation3Which of these is NOT a product of glycolysis? 1.NADH 2.pyruvate 3.FADH2 4.ATP3In glycolysis, what starts the process of glucose oxidation? 1.ADP 2.ATP 3.hexokinase 4.NADPH 5.FADH22In glycolysis there is a net gain of _____ ATP. 1.3 2.2 3.1 4.4 5.52