Biology Chapter 7

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Which of the following are the final products of glucose metabolism during aerobic cell respiration?

ATP, heat, and carbon dioxide

Proteins and fats may be used as energy sources to drive aerobic respiration.

TRUE

Cellular respiration produces the most energy in the form of ATP from which of the following?

oxidative phosphorylation

The ATP made during glycolysis is generated by

substrate-level phosphorylation.

Oxygen is used by

the electron transport chain

Which of the following are produced during the citric acid cycle?

ATP, NADH, and FADH2.

Which of the following statements is TRUE of both aerobic and anaerobic respiration?

Both use glycolysis to oxidize glucose to pyruvate and both produce NADH as high-energy intermediates.

Which of the following processes occurs when oxygen is unavailable?

Fermentation

Which of the following statements about the electron transport chain is true?

Electrons are received from NADH and FADH2. Electrons are passed from donor to recipient carrier molecules in a series of oxidation-reduction reactions. Usually the terminal electron acceptor is oxygen. Most of the enzymes are part of the inner mitochondrial membrane. *All of the above*

Which of the following do yeast produce during fermentation?

Ethanol

Fermentation is a more efficient form of energy production than aerobic respiration.

FALSE

In addition to ATP, what are the end products of glycolysis?

NADH and pyruvate

Which of the following statements is true?

The citric acid cycle occurs in the mitochondria matrix.

Which would be TRUE if an inhibitor blocked the activity of mitochondrial ATP synthase?

The pH in the space between the mitochondrial membranes would increase.

The citric acid cycle begins with

acetyl CoA

The main function of cellular respiration is the

conversion of energy stored in the chemical bonds of glucose to an energy form that the cell can use.

The mitochondrial enzyme, ATP synthase

couples the synthesis of ATP to the flow of protons across the inner membrane.

One purpose of the electron transport chain is to

cycle NADH + H+ back to NAD+ so glycolysis can begin again.

Where does glycolysis takes place?

cytosol

When heart muscles cells are deprived of oxygen, the heart still pumps. What must the heart cells be able to do?

derive sufficient energy from fermentation

The synthesis of ATP from ADP and Pi is an _______ reaction. In mitochondria, ATP synthesis is driven by the flow of _______ down the concentration and electrical gradient established by _______.

endergonic; protons; electron transport

Which of the following processes will occur in the presence or absence of oxygen?

glycolysis

Which occurs only in anaerobic metabolism of glucose?

lactate fermentation

Where are the protein complexes associated with the electron transport chain located?

mitochondrial inner membrane


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