Cellular Respiration Practice Test (Ch 9)

A

Enter the letter of the multiple choice option that successfully answers the following question: Which of the following is NOT a stage of cellular respiration?

A. Digestion

B. Glycolysis

C. Electron Transport

D. Krebs Cycle

C

Enter the letter of the multiple choice option that successfully answers the following question: Cellular respiration is called an aerobic process because it requires...

A. Light

B. Exercise

C. Oxygen

D. Glucose

E. ATP

A

Enter the letter of the multiple choice option that successfully answers the following question: Glycolysis requires...

A. ATP

B. Oxygen

C. Sunlight

D. FADH2

E. NADH

A

Enter the letter of the multiple choice option that successfully answers the following question: Electron transport occurs in the...

A. Inner mitochondrial membrane

B. Outer mitochondrial membrane

C. Nuclear membrane

D. Cell membrane

E. Cytoplasm - just outside the mitochondria

D

Enter the letter of the multiple choice option that successfully answers the following question: The Krebs cycle starts with...

A. Lactic acid and yields CO2.

B. Glucose and yields ATP.

C. Pyruvate and yields alcohol.

D. Pyruvate and yields CO2.

E. Citric acid and yields ATP.

A

Enter the letter of the multiple choice option that successfully answers the following question: Glycolysis provides a cell with a net gain of...

A. 2 ATP molecules

B. 4 ATP molecules

C. 4 ADP molecules

D. 18 ATP molecules

E. 36-38 ATP molecules

A

Enter the letter of the multiple choice option that successfully answers the following question: Which of the following pass high-energy electrons to the electron transport chain?

A. NADH and FADH2

B. ATP and ADP

C. Citric acid and pyruvate

D. A 2-carbon acetyl group bonded to Coenzyme A

E. NAD+ and FAD

D

Enter the letter of the multiple choice option that successfully answers the following question: Cellular Respiration uses 1 molecule of glucose to produce approximately...

A. 2 ATP

B. 4 ATP

C. 34 ATP

D. 38 ATP

E. 1,000,000,000,000,000,000 ATP

D

Enter the letter of the multiple choice option that successfully answers the following question: Which of the following is NOT a product of glycolysis?

A. NADH

B. Pyruvate

C. ATP

D. Glucose

E. All are products of glycolysis

C

Enter the letter of the multiple choice option that successfully answers the following question: Cellular respiration occurs...

A. Only in plant cells

B. Only in animal cells

C. In both plant and animal cells

D. In neither plant nor animal cells

E. Only in mammals and other animals that have lungs.

C

Enter the letter of the multiple choice option that successfully answers the following question: Which of the following is the correct sequence of events in cellular respiration?

A. Glycolysis + Fermentation + Krebs Cycle

B. Krebs Cycle + Electron Transport + Glycolysis

C. Glycolysis + Krebs Cycle + Electron Transport

D. Krebs Cycle + Glycolysis + Electron Transport

E. Glycolysis + Fermentation + Electron Transport

B

Enter the letter of the multiple choice option that successfully answers the following question: The Krebs cycle produces...

A. O2

B. CO2

C. Glucose

D. Pyruvate

E. NAD+

B

Enter the letter of the multiple choice option that successfully answers the following question: Which of these is a product of cellular respiration?

A. Oxygen

B. Water

C. Glucose

D. ADP

E. Korean money

D

Enter the letter of the multiple choice option that successfully answers the following question: The starting molecule for glycolysis is...

A. ADP

B. Pyruvate

C. Citric acid

D. Glucose

E. O2

A

Enter the letter of the multiple choice option that successfully answers the following question: Which process produces both NADH and FADH2?

A. Krebs cycle

B. Glycolysis

C. Electron transport

D. Lactic acid fermentation

C

Enter the letter of the multiple choice option that successfully answers the following question: Which best defines what happens at the very beginning of the Krebs cycle?

A. Glucose is converted into pyruvate.

B. Pyruvate is converted into glucose.

C. Pyruvate is converted into acetyl CoA and CO2.

D. Pyruvate is converted into acetyl CoA and H2O.

E. Acetyl CoA is converted into pyruvate and CO2.

C

Enter the letter of the multiple choice option that successfully answers the following question: Which process directly maintains a proton gradient?

A. Krebs cycle

B. Glycolysis

C. Electron transport chain

D. A, B, and C

E. A and C only

A

Enter the letter of the multiple choice option that successfully answers the following question: Acetyl CoA is produced from...

A. Pyruvate and a coenzyme

B. Citric acid and a coenzyme

C. ATP and pyruvate

D. CO2 and pyruvate

E. Citric acid and CO2

B

Enter the letter of the multiple choice option that successfully answers the following question: ONE turn of the Krebs cycle produces...

A. 2 NADH, 2 FADH2, and 2 ATP

B. 4 NADH, 1 FADH2, and 1 ATP

C. 1 NADH, 4 FADH2, and 2 ATP

D. 4 NADH, 2 FADH2, and 1 ATP

E. 4 NADH, 1 FADH2, and 2 ATP

A

Enter the letter of the multiple choice option that successfully answers the following question: Which of the following occur in the cytoplasm of the cell?

A. Glycolysis

B. Electron transport

C. Krebs cycle

D. The oxidation of NADH

E. The reduction of FAD

C

Enter the letter of the multiple choice option that successfully answers the following question: Which process is most directly responsible for producing water?

A. Krebs cycle

B. Glycolysis

C. Electron transport

D. The reduction of FAD

E. B and D only

C

Enter the letter of the multiple choice option that successfully answers the following question: All of the following substances are produced in a muscle cell during glycolysis EXCEPT:

A. ATP

B. Pyruvate

C. Acetyl CoA

D. NADH

E. ADP

A

Enter the letter of the multiple choice option that successfully answers the following question: How many carbon atoms does each pyruvate feed into the Krebs cycle?

A. 2

B. 4

C. 6

D. 8

E. 10

D

Enter the letter of the multiple choice option that successfully answers the following question: The complete aerobic respiration of maltose, a disaccharide of two glucose molecules, would release ___________ molecules of CO2?

A. 2

B. 3

C. 6

D. 12

E. 0

A

Enter the letter of the multiple choice option that successfully answers the following question: At the end of glycolysis, how much of the chemical energy in glucose is still unused?

A. 90%

B. 75%

C. 50%

D. 25%

E. 9%

F. 0%

F

Enter the letter of the multiple choice option that successfully answers the following question: Which statement is true?

A. Glycolysis requires oxygen.

B. Glycolysis doesn't require oxygen.

C. Krebs Cycle and electron transport are pathways that require oxygen.

D. Krebs Cycle and electron transport are pathways that don't require oxygen.

E. A and D are both correct answers.

F. B and C are both correct answers.

B

Enter the letter of the multiple choice option that successfully answers the following question: How many ATP are produced during the Krebs Cycle?

A. 0 ATP

B. 2 ATP

C. 4 ATP

D. 34 ATP

E. 38 ATP

ATP

Why must you breathe?

The oxygen in the air you breathe is the final electron acceptor of the electron transport chain. Without O2, the flow of the electrons in the electron transport chain would cease, proton pumps would shut down, the proton gradient would equilibrate and no more ___________ could be generated.

ATP

Why is cellular respiration necessary? Every living thing on earth MUST be able to do it - Why? What does it accomplish and why is that so important?

It takes the energy from glucose, a valuable but usable molecule, and transfers it into molecules of ___________, a valuable molecule because it is the only energy molecule usable in the cell.

Lives

Explain the necessity of constantly maintaining a proton gradient in the mitochondria.

Due to the proton gradient, protons move from areas of high proton concentration to areas of low proton concentration through an intricate membrane protein called ATP synthase. As they do, the ATP synthase rotates and that rotational mechanical energy re-energizes ADP back into ATP. All of this stops if the proton gradient is lost. If no ATP is made, ___________(s) are lost. Life cannot survive without ATP.

CoEnzyme A

What is the primary purpose of ___________ ___________?

To pair a 4-carbon molecule in the mitochondrial matrix to a 2-carbon acetyl group forming a 6-carbon molecule called citric acid.