Q1. Use the diagram of a eukaryotic cell drawn below to answer the following que

Question

Q1.

Use the diagram of a eukaryotic cell drawn below to answer the following questions. Select all that apply for each question:

Part 1. Site(s) where most DNA and RNA is synthesized:

Select ALL that apply:

1. A

2. B

3. C

4. D

5. E

6. F

7. G

Part 2. Site(s) of protein packaging and carbohydrate synthesis:

Select ALL that apply:

1. A

2. B

3. C

4. D

5. E

6. F

7. G

Q2.

Shown below is a representation of a neuron, indicating the location of an axon hillock, where a large amount of ions are actively transported against their concentration gradients. The axon hillock is a region of the neuron densely populated by mitochondria.

Do you predict that the ion transport found at the axon hillock is spontaneous or non-spontaneous?

Select ONE option:

A. spontaneous

B. non-spontaneous

Q3.

Which of the following statements about membrane transport is correct?

Select ONE option:

A. Active transport moves molecules from high to low concentration using ATP hydrolysis.

B. Passive transport allows molecules to move from high to low concentration by providing an opening through the impermeable membrane.

C. Both active and passive transport use ATP hydrolysis to transfer ions.

Q4.

Based on what you know about transport proteins, do you think that transport proteins are integral membrane proteins or peripheral membrane proteins?

Select ONE option:

A. Integral membrane proteins

B. Peripheral membrane proteins

Q5.

ETC proteins:

Select ONE option:

A. actively pump protons from the matrix into the intermembrane space.

B. actively pump protons from the intermembrane space into the matrix.

C. passively transport protons from the matrix into the intermembrane space.

D. passively transport protons from the intermembrane space into the matrix

Q6.

The generation of NADH by glycolysis and the citric acid cycle is important because:

Select ONE option:

A. NADH provides the fuel for the ETC to pump protons from a region of low concentration to a region of high concentration

B. NADH oxidizes pyruvate allowing it to travel back into the cytoplasm from the mitochondrial matrix.

C. NADH is a component of the ETC that actively transports protons from a region of low concentration to a region of high concentration.

Q7.

Where does the energy required to establish the proton gradient across the inner mitochondrial membrane come from?

Select ONE option:

A. ATP produced by glycolysis in the cytosol.

B. The movement of electrons from one carrier to another across the ETC.

C. The final acceptance of electrons by carbon dioxide

D. The donation of electrons by pyruvate to the ETC.

Q8.

Smooth ER

0/1 point (graded)

Which of the following are properties of the smooth ER?

(Select all that apply.)

A. It synthesizes membrane proteins and secretory proteins.

B. It synthesizes lipids

C. It is studded with ribosomes.

D. It is continuous with the nuclear envelope.

E. It is continuous with the rough ER.

Q9.

Proton Travel

1 point possible (graded)

Protons travel through which complex of the ATP synthase?

Select ONE option:

A. Protons travel through the F1 complex.

B. Protons travel through the F0 complex.

C. Protons travel through both the F0 and F1 complexes.

Q10.

F1 Complex

1 point possible (graded)

If you need a refresher on membrane proteins, you can refer back to Lesson 1: Plasma Membrane and Membrane Proteins.

The F1 complex is composed of which of the following?

Select ONE option:

A. Integral membrane proteins and associated lipids

B. Peripheral membrane proteins

Explanation / Answer

Q1.Part 1:- (c) Nucleus.

Q1.Part 2:- (e) Golgi apparatus.

Q2. (A) Spontaneous

Q3. (A) Active transport moves molecules from high to low concentration using ATP hydrolysis.

Q4. (A) Integral membrane proteins.

Q5. (A) actively pump protons from the matrix into the intermembrane space.

Q6. (A) NADH provides the fuel for the ETC to pump protons from a region of low concentration to a region of high concentration

Q7. (B) The movement of electrons from one carrier to another across the ETC.

Q8. (A) (B) (D) (E).

Q9. (C) Protons travel through both the F0 and F1 complexes.

Q10. (A) Integral membrane proteins and associated lipids

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