Download Cell Respiration Take Home Test 1. When cells break down food

Cell Respiration Take Home Test
1. When cells break down food molecules, energy
a. is released all at once.
b. is released entirely as body heat into the environment.
c. is temporarily stored in ATP molecules while some is released as body heat.
d. causes excitation of electrons in chlorophyll molecules.
2. The process of aerobic cellular respiration
a. is performed only by organisms that are incapable of photosynthesis.
b. breaks down sugar molecules to release stored energy and save it as ATP.
c. is used only in the absence of oxygen.
d. occurs only in certain animals.
3. When glycolysis occurs,
a. a molecule of glucose is split.
c. two molecules of pyruvic acid (pyruvate) are made.
b. some ATP is produced.
d. All of the above
4. The name of the process that takes place when organic compounds are broken down in the absence of oxygen is
a. phosphorylation.
c. fermentation.
b. aerobic.
d. All of the above
5. When muscles are exercised extensively in the absence of sufficient oxygen,
a. a large amount of ATP is formed.
c. lactic acid is produced.
b. NADPH molecules split.
d. alcohol and CO2 are produced.
6. You have been growing some animal cells in culture. The cells grow well for several weeks, and then don’t seem to
grow as well. You conduct some tests and determine that there is a lot of lactic acid in the culture fluid. Which of the
following is the most likely explanation for the poor condition of the cells?
a. There is too much glucose in the culture fluid.
c. There is not enough glucose in the culture fluid.
b. There is too much oxygen in the culture fluid.
d. There is not enough oxygen in the culture fluid.
7. Which of the following is NOT true about glycolysis:
a. it takes place inside the mitochondria
b. it is the first step to breaking down glucose
c. it takes place inside the cytoplasm
d. it is an anaerobic process
8. In cellular respiration, Acety1 CoA combines with Oxaloacetic Acid to form _______ as part of _________
a. pyruvic acid, glycolysis.
c. citric acid, Krebs cycle.
b. glucose, Krebs cycle.
d. electrons, electron transport chain.
9. With oxygen present, the Krebs cycle and the electron transport chain
a. provides organisms an alternative to glycolysis. c. produce most of the ATP needed for life.
b. produce carbon dioxide, water, and ATP.
d. All of the above
10. Water is an end product in
a. lactic acid formation.
c. the Krebs cycle.
b. fermentation.
d. the electron transport system.
11. NAD+ and FAD are important to cellular respiration because
a. they carry ATP to the cell.
c. they are electron, proton carriers.
b. they combine with pyruvic acid.
d. they keep CO2 from building up in the cell.
12. What happens to electrons as they are transported along the electron transport chain?
a. They lose energy.
c. They combine with oxygen and hydrogen to form water
b. They gain energy.
d. Both a and c.
13. After glycolysis if oxygen is present pyruvic acid goes to the
a. cytosol
c. chloroplast
b. cell membrane
d. mitochondria
14. During the link reaction pyruvic acid combines with _______ to make ________.
a. oxaloacetic acid, citric acid
c. Coenzyme A (CoA), Acetyl CoA
b. glucose, starch
d. Citric Acid, Acetyl CoA
15. C6 H12O6 + 6O2 + enzymes ---> 6CO2 + 6 H2O + MOLECULE A. “Molecule A” refers to:
a. oxygen
c. ATP
b. glucose
d. ADP
16. The sugar in ATP is ______ while the nitrogenous base is __________.
a. glucose, ADP
c. ribose, Adenine
b. glucose, Adenine
d. deoxyribose, Adenine
17. Which of the following is the process of breaking down ATP into ADP.
a. an endothemic reaction
c. fermentation
b. a stubborn reaction
d. an exothermic
18. After glycolysis, if oxygen is absent, what process is used to recycle NAD+ ?
a. The Krebs cycle
c. fermentation
b. the Calvin cycle
d. the electron transport chain
19. The bacteria that cause tetanus can survive in a puncture wound that has healed on the outer surface of the
skin. The bacteria are, therefore, cut off from oxygen. Tetanus bacteria acquire the energy they need to survive
through
a. aerobic respiration
c. chemosynthesis
b. anaerobic respiration
d. photosynthesis
20. When oxygen is present, the correct sequence in the stages of cellular respiration is…
a. glycolysis, fermentation, Krebs cycle
c. electron transport chain, glycolysis, fermentation
b. Krebs cycle, fermentation, glycolysis
d. glycolysis, Krebs cycle, electron transport chain
21. Which of these products is formed during the metabolic reactions of cellular respiration?
a. Fructose
c.
Oxygen
b. Glucose
d.
Water
22. Glycolysis yields only _______ ATP, while Krebs yields __________ and the electron transport chain yields ______.
23. After two turns of the Krebs cycle you get 6_________, 2________, 2_________ and 4 ________.
24. In the electron transport chain, every FADH2 that enters you get_____ ATP and for every NADH you get ____ ATP.
25. The final proton and electron acceptor in the electron transport chain is __________.
26. In order for glucose to split during glycolysis, how many ATP molecules must be invested? _______
27. During glycolysis glucose is broken down into two molecules of ____________.
28. ______________ builds up in muscles during exercise if oxygen is depleted because of ___________ fermentation.
29. The final products of alcoholic fermentation are _________ and ___________.
30. The stage of aerobic respiration that produces the most ATP is __________________.
31. Water is formed during which step of aerobic respiration? ______________
32. When a phosphate is added to ADP to produce ATP ___________________ has occurred. (process of adding a
phosphate.