2Which of the following is NOT a stage of cellular respiration? fermentationelectron transportglycolysisKrebs cycle
3Which of the following is the correct sequence of events in cellular respiration? glycolysis fermentation Krebs cycleKrebs cycle ® electron transport ® glycolysisglycolysis ® Krebs cycle ® electron transportKrebs cycle ® glycolysis ® electron transport
4Which of the following is released during cellular respiration? oxygenairenergylactic acid
5Cellular respiration uses one molecule of glucose to produce 2 ATP molecules.34 ATP molecules.36 ATP molecules.38 ATP molecules.
6What is the correct equation for cellular respiration? 6O2 + C6 H12 O CO2 + 6H2O + Energy6O2 + C6 H12O6 + Energy ® 6CO2 + 6H2O6CO2 + 6H2O ® 6O2 + C6 H12O6 + Energy6CO2 + 6H2O + Energy ® 6O2 + C6 H12O6
7Cellular respiration releases energy by breaking down food molecules.ATP.carbon dioxide.water.
8What are the reactants in the equation for cellular respiration? oxygen and lactic acidcarbon dioxide and waterglucose and oxygenwater and glucose
9Which of these is a product of cellular respiration? oxygenwaterglucoseall of the above
10Which of these processes takes place in the cytoplasm of a cell? glycolysiselectron transportKrebs cycleall of the above
11Glycolysis provides a cell with a net gain of 2 ATP molecules.4 ATP molecules.18 ATP molecules.36 ATP molecules.
12The starting molecule for glycolysis is ADP.pyruvic acid.citric acid.glucose.
13Glycolysis requires an energy input. oxygen. hours to produce many ATP molecules.NADP+.
14Which of the following is NOT a product of glycolysis? NADHpyruvic acidATPglucose
15Which of the following acts as an electron carrier in cellular respiration? NAD+pyruvic acidADPATP
17The two main types of fermentation are called alcoholic and aerobic.aerobic and anaerobic.alcoholic and lactic acid.lactic acid and anaerobic.
18One cause of muscle soreness is alcoholic fermentation.glycolysis.lactic acid fermentation.the Krebs cycle.
19Which process is used to produce beer and wine? lactic acid fermentationglycolysisalcoholic fermentationthe Krebs cycle
20Milk is converted to yogurt under certain conditions when the microorganisms in the milk produce acid. Which of these processes would you expect to be key in the production of yogurt?the Krebs cyclephotosynthesisalcoholic fermentationlactic acid fermentation
21During lactic acid fermentation, NAD+ is regenerated, allowing glycolysis to continue.glucose is split into three pyruvic acid molecules.oxygen is required.3 ATP molecules are produced.
22The conversion of pyruvic acid into lactic acid requires alcohol.oxygen.ATP.NADH.
23In the presence of oxygen, glycolysis is followed by lactic acid fermentation.alcoholic fermentation.photosynthesis.the Krebs cycle.
24Cellular respiration is called an aerobic process because it requires light.exercise.oxygen.glucose.
25Which organism is NOT likely to carry out cellular respiration? treemushroomanaerobic bacteriumtiger
26The starting molecule for the Krebs cycle is glucose.NADH.pyruvic acid.coenzyme A.
27The Krebs cycle does not occur if oxygen is present.fermentation occurs.glycolysis occurs.carbon dioxide is present.
29The Krebs cycle starts with lactic acid and yields carbon dioxide.glucose and yields 32 ATPs.pyruvic acid and yields lactic acid or alcohol.pyruvic acid and yields carbon dioxide.
30The electron transport chain can be found in prokaryotes.animals.plants.all of the above
31In eukaryotes, electron transport occurs in the mitochondria.chloroplasts.cell membrane.cytoplasm.
32Which of the following passes high-energy electrons into the electron transport chain? NADH and FADH2ATP and ADPcitric acidacetyl – CoA
33Each pair of high-energy electrons that moves down the electron transport chain provides enough energy totransport water molecules across the membrane.convert 3 ADP molecules into 3 ATP molecules.convert carbon dioxide into water molecules.break glucose into pyruvic acid.
34The energy of the electrons passing along the electron transport chain is used to make lactic acid.citric acid.alcohol.ATP.
35Breathing heavily after running a race is your body’s way of making more citric acid.repaying an oxygen debt.restarting glycolysis.recharging the electron transport chain.
36When the body needs to exercise for longer than 90 seconds, it generates ATP by carrying out lactic acid fermentation.alcoholic fermentation.cellular respiration.glycolysis.
37If you want to control your weight, how long should you exercise aerobically each time that you exercise?at least 90 secondsless than 15 minutes15 to 20 minutesmore than 20 minutes
38The energy needed to win a 2-minute footrace is produced mostly by lactic acid fermentation.cellular respiration.using up stores of ATP.breaking down fats.
39Which statement mainly explains why even well-conditioned athletes have to pace themselves for athletic events that last several hours?Lactic acid fermentation can cause muscle soreness.Heavy breathing is needed to get rid of lactic acid.Cellular respiration releases energy more slowly than fermentation does.all of the above
40All of the following are sources of energy during exercise EXCEPT stored ATP.alcoholic fermentation.lactic acid fermentation.cellular respiration.
41Which process does NOT release energy from glucose? glycolysisphotosynthesisfermentationcellular respiration
42How are cellular respiration and photosynthesis almost opposite processes? Photosynthesis releases energy, and cellular respiration stores energy.Photosynthesis removes carbon dioxide from the atmosphere, and cellular respiration puts it back.Photosynthesis removes oxygen from the atmosphere, and cellular respiration puts it back.all of the above
43Photosynthesis is to chloroplasts as cellular respiration is to cytoplasm.mitochondria.nuclei.
44Plants cannot release energy from glucose using glycolysis.photosynthesis.the Krebs cycle.cellular respiration.
45The products of photosynthesis are the products of cellular respiration.reactants of cellular respiration.products of glycolysis.reactants of fermentation.
46Cellular respiration releases energy by breaking down glucose in the presence of carbon dioxide. TrueFalse
47If an animal cell stops carrying out cellular respiration, it will die. TrueFalse
48The products of glycolysis are 2 ATP, 2 NADH, and 2 pyruvic acid molecules. TrueFalse
49Either cellular respiration or fermentation can be used to release energy, depending on the presence of carbohydrates.TrueFalse
50The pathway labeled A in the figure is called glycolysis. TrueFalse
51If carbon dioxide is not present, the pathway labeled C in the figure usually will not occur. TrueFalse
52The Krebs cycle releases energy in the form of ATP. TrueFalse
53Without the Krebs cycle, the electron transport chain would produce very few ATPs. TrueFalse
54carry electrons from the Krebs cycle to the electron transport chain. TrueFalse
55In prokaryotes, the electron transport chain is located in the inner membrane of the mitochondria. TrueFalse
56If you swim aerobically for 30 minutes, your body has probably started to break down stored molecules, such as fats, for energy.TrueFalse
57The first few seconds of intense exercise use up the cell’s stores of fat. TrueFalse
58During the course of a long race, a person’s muscle cells will use both cellular respiration and lactic acid fermentation to produce ATP.TrueFalse
59The reactants of photosynthesis are the same as the reactants of cellular respiration. TrueFalse
60During photosynthesis, energy is stored in the form of fats. TrueFalse