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The process by which ADP is converted to ATP takes place in the ___ and one of the processes by which this change occurs is known as ___.


A) mitochondria/oxidative phosphorylation
B) cytoplasm/oxidative phosphorylation
C) mitochondria/citric acid cycle
D) cytoplasm/citric acid cycle

E) B) and C)
F) A) and B)

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In humans, pyruvate is reduced to lactate when the conditions are ___ such as after a vigorous exercise.

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Most of triglyceride digestion occurs in the ___.


A) mouth
B) stomach
C) small intestine
D) liver

E) B) and C)
F) C) and D)

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What is a possible response to a drop in blood glucose concentration?


A) Anaerobic metabolism of sugars occurs instead of aerobic pathways.
B) The rate of the production of the enzymes necessary to produce glucose is increased.
C) Glycogenolysis is switched on and glycogenesis is switched off.
D) The production of glucose 6-phosphate is switched off.

E) B) and C)
F) All of the above

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Is oxidative deamination catabolism or anabolism?

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Protein synthesis is a form of ___.


A) metabolism
B) catabolism
C) anabolism
D) hydrolysis

E) None of the above
F) All of the above

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Protein digestion produces amino acids


A) that are further digested by glycolysis to produce ATP.
B) that can be used to produce new peptides and proteins.
C) that undergo transamination to produce all known amino acids.
D) that can be linked together with glycerol to produce lipids.

E) All of the above
F) A) and B)

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The NADH or FADH2 produced from fatty acid oxidation can enter ___ where these coenzymes are recycled to their oxidized forms.


A) glycolysis
B) gluconeogenesis
C) citric acid cycle
D) electron transport chain

E) A) and C)
F) None of the above

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Differentiate between the products of glycolysis under aerobic and anaerobic conditions.

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Under aerobic conditions, glucose is converted into pyruvate which forms acetyl-CoA, which enters the citric acid cycle. Under anaerobic conditions, glucose is converted into pyruvate, which undergoes fermentation to lactate.

Draw ATP and label the ribose and also the phosphoanhydride bond, that when cleaved, results in the conversion of ATP into ADP.

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Which of the following bonds is broken when ATP is hydrolyzed?


A) hydrogen bond
B) phosphoester bond
C) N-glycosidic bond
D) phosphoanhydride bond

E) B) and D)
F) A) and C)

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The location in the cell where ATP is produced is the ___.


A) mitochondria
B) lysosome
C) nucleus
D) cell membrane

E) None of the above
F) All of the above

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Is citric acid cycle catabolism or anabolism?

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catabolism

The NADH and FADH2 used by the electron transport chain are normally produced in the mitochondria; however,


A) NADH is also produced during glycolysis in the cytoplasm.
B) NADH is only produced and used in the mitochondria; FADH2 can be used elsewhere.
C) FADH2 is also produced by the citric acid cycle; NADH is not.
D) FADH2 produced in the mitochondria has more energy than does NADH.

E) B) and C)
F) B) and D)

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The process by which glucose is split into pyruvate is ___.

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Beginning with octanoic acid, how many passes through the Ξ²\beta -oxidation spiral will take place?


A) 3
B) 4
C) 6
D) 8

E) A) and C)
F) A) and B)

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Which choice is a goal of catabolism?


A) the production of heat
B) the attachment of the coenzyme A residue
C) the generation of ATP molecules
D) the production of two-carbon fragments

E) B) and D)
F) A) and D)

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Glycolysis is controlled in steps:


A) 1, 2, and 3
B) 2, 5 and 7
C) 1, 3 and 10
D) 3, 5 and 8

E) B) and C)
F) A) and D)

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Lipogenesis


A) produces fatty acids by means of a spiral pathway.
B) produces fatty acids by joining two carbon atoms at a time.
C) does not produce all of the fatty acids required by hum
D) All of these answer choices are correct.

E) A) and C)
F) C) and D)

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Glycolysis occurs in cytoplasm; the next step in carbohydrate metabolism, the citric acid cycle, occurs in mitochondria.

A) True
B) False

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