Q: Which of the following is NOT a function of aquaporins in the cell membrane?

Transporting ions such as Na$^{+}$ and K$^{+}$ across the membrane.

Q: Which equation correctly represents the overall process of aerobic cellular respiration?

$ \mathrm{C_6H_{12}O_6} + 6\mathrm{O_2} \rightarrow 6\mathrm{CO_2} + 6\mathrm{H_2O} + \text{energy} $

Question 1

Which of the following best describes the difference between facilitated diffusion and active transport across a cell membrane?

Accepted Answer

Facilitated diffusion moves substances down their concentration gradient without energy input, while active transport moves substances against their concentration gradient using energy, often from ATP.

Question 2

Which of the following is NOT a function of aquaporins in the cell membrane?

Accepted Answer

Transporting ions such as Na$^{+}$ and K$^{+}$ across the membrane.

Question 3

A scientist discovers a membrane protein that moves glucose into a cell against its concentration gradient. Which type of transport is this protein most likely involved in?

Accepted Answer

Active transport

Question 4

Which of the following statements correctly compares prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells have a nucleus, while prokaryotic cells lack a nucleus.

Question 5

Which organelle is responsible for synthesizing proteins that are exported from the cell?

Accepted Answer

Ribosomes attached to the rough endoplasmic reticulum

Question 6

Which of the following best describes the process of endocytosis?

Accepted Answer

The cell engulfs large particles or liquids by forming vesicles from the plasma membrane.

Question 7

Which of the following is true about oxidation and reduction reactions in cellular respiration?

Accepted Answer

Oxidation is the loss of electrons, and reduction is the gain of electrons.

Question 8

During aerobic cellular respiration, what is the final electron acceptor in the electron transport chain?

Accepted Answer

Oxygen (O$_2$)

Question 9

Which equation correctly represents the overall process of aerobic cellular respiration?

Accepted Answer

$ \mathrm{C_6H_{12}O_6} + 6\mathrm{O_2} ightarrow 6\mathrm{CO_2} + 6\mathrm{H_2O} + 	ext{energy} $

Question 10

Which of the following statements about ATP synthase is correct?

Accepted Answer

ATP synthase uses the energy from a proton gradient across the mitochondrial membrane to synthesize ATP.

Question 11

Which process in photosynthesis produces oxygen as a byproduct?

Accepted Answer

Light-dependent reactions

Question 12

A mutation disables the function of carrier proteins in a cell membrane. Which process would be most directly affected?

Accepted Answer

Facilitated diffusion of glucose

Question 13

Which of the following is a correct statement about the sodium-potassium pump?

Accepted Answer

It requires energy from ATP to function.

Question 14

Which of the following is a product of the Calvin cycle in photosynthesis?

Accepted Answer

Glucose (C$_6$H$_{12}$O$_6$)

Question 15

Which of the following best explains why plant cells have both chloroplasts and mitochondria?

Accepted Answer

Chloroplasts are used for photosynthesis, and mitochondria are used for cellular respiration to generate ATP from glucose.

Question 16

Which of the following is true about exergonic and endergonic reactions?

Accepted Answer

Exergonic reactions release energy, while endergonic reactions require energy input.

Question 17

A cell is placed in a solution with a higher concentration of solutes than inside the cell. What will most likely happen to the cell?

Accepted Answer

Water will move out of the cell, causing it to shrink.

Question 18

Which of the following is a correct description of the role of NADH in cellular respiration?

Accepted Answer

NADH donates electrons to the electron transport chain, helping to generate ATP.

Question 19

Which of the following best describes the relationship between the light-dependent reactions and the Calvin cycle in photosynthesis?

Accepted Answer

The light-dependent reactions produce ATP and NADPH, which are used in the Calvin cycle to fix carbon dioxide into glucose.

Cell Transport, Cell Structure, and Metabolism: Study Guide for General Biology

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