Question

Q1.

Which of the following apply to cellular respiration?

(Select ALL that apply.)

A. Cellular respiration uses sunlight to convert low energy carbon dioxide into high energy sugar molecules.

B. Cellular respiration breaks down high energy sugars thereby releasing energy for the cell to do work.

C. Cellular respiration stores the energy from sugar in the form of ATP.

D. Cellular respiration consumes O2 and releases CO2.

Q2.

Why is oxygen required for life? Select ONE option:

A. It facilitates photosynthesis.

B. It is essential for glycolysis.

C. It powers the TCA cycle (citric acid cycle).

D. It is the final acceptor of electrons from the food we eat.

Q3.

The number of mitochondria in a cell may vary depending on: Select ONE option:

A. the physical shape of the cell.

B. the pH of the cell.

C. the metabolic needs of the cell.

D. none of these properties affect the number of mitochondria in a cell

Q4.

Which of these terms or processes is NOT associated with mitochondria?Select ONE option:

A. ATP

B. TCA Cycle (citric acid cycle)

C. Breakdown of glucose to pyruvate

D. Cristae

Q5.

What major classes of proteins are found in the inner mitochondrial membrane?

(Select all that apply.)

A. proteins involved in metabolism

B. proteins involved in cell movement

C. proteins involved in the transport of metabolites

D. proteins involved in DNA synthesis

E. proteins that directly synthesize ATP

Q6.

Order the reduction events of the electron transport chain.

Event 1:

Select ONE option:

A. Coenzyme Q is reduced

B. Complex I is reduced

C. Complex III is reduced.

D. Complex IV is reduced

E. Cytochrome C is reduced.

Event 2:

Select  ONE option:

A. Coenzyme Q is reduced

B. Complex I is reduced

C. Complex III is reduced.

D. Complex IV is reduced

E. Cytochrome C is reduced.

Event 3:

Select  ONE option:

A. Coenzyme Q is reduced

B. Complex I is reduced

C. Complex III is reduced.

D. Complex IV is reduced

E. Cytochrome C is reduced.

Event 4:

Select  ONE option:

A. Coenzyme Q is reduced

B. Complex I is reduced

C. Complex III is reduced.

D. Complex IV is reduced

E. Cytochrome C is reduced.

Event 5:

Select  ONE option:

A. Coenzyme Q is reduced

B. Complex I is reduced

C. Complex III is reduced.

D. Complex IV is reduced

E. Cytochrome C is reduced.

Q7.

The F1F0 ATP synthase: Select ONE option:

A. transports ATP down its concentration gradient across the inner mitochondrial membrane, which it couples to the synthesis of protons.

B. transports protons down their concentration gradient across the inner mitochondrial membrane, which it couples to the synthesis of ATP.

C. transports ATP down its concentration gradient across the outer mitochondrial membrane, which it couples to the synthesis of protons.

D. transports protons down their concentration gradient across the outer mitochondrial membrane, which it couples to the synthesis of ATP.

Q8.

When protons travel through the F0 complex, which portions of the ATP synthase rotate? Select ONE option:

A. alpha subunits

B. beta subunits

C. gamma subunit

D. c subunits

E. alpha and beta subunits

F. gamma and c subunits

Answer 1

Q.1 - Option B. Cellular respiration break down high energy sugar molecule thereby releasing energy for the cell to do work.

Q.2 - Option D. It is the terminal electron acceptor in electron transport chain.

Q.3 - Option C. Number of mitochondria varies depending on the metabolic State of the cell.

Q.4 - Option C. Glycolysis is not associated with mitochondria. It takes place in cytoplasm.

Q.5 - Option A, C, D & E. Proteins required for metabolism, transport of metabolites, DNA synthesis, and ATP production are produced by mitochondria.

Q.6

Event 1 - Option B. Complex one is reduced.

Event 2 - Option A. Complex Q is reduced.

Event 3 - Option C. Complex three is reduced.

Event 4 - Option E. Cytochrome C is reduced.

Event 5 - Option D. Complex four is reduced.

Q.7 - Option B. Transport proton against the concentration gradient across the inner mitochondrial membrane for the production of ATP.

Q.8 - Option F. Both c and gamma subunit rotates.