Question 1

Which of the following statements best describes the role of oxygen in aerobic cellular respiration?

Accepted Answer

Oxygen acts as the final electron acceptor in the electron transport chain.

Question 2

During fermentation, which molecule is regenerated to allow glycolysis to continue?

Accepted Answer

NAD+

Question 3

Which equation correctly represents the overall reaction for 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 4

A cell is placed in a hypertonic solution. What will happen to the cell?

Accepted Answer

It will lose water and shrink due to osmosis.

Question 5

Which of the following is a product of the electron transport chain in cellular respiration?

Accepted Answer

H$_2$O

Question 6

Which process directly produces the most ATP per glucose molecule during cellular respiration?

Accepted Answer

Oxidative phosphorylation

Question 7

Phosphofructokinase (PFK) deficiency in dogs leads to which of the following symptoms?

Accepted Answer

Reduced tolerance for exercise

Question 8

Which of the following best describes osmosis?

Accepted Answer

The movement of water from high to low concentration across a selectively permeable membrane.

Question 9

Which of the following statements about enzymes is correct?

Accepted Answer

Enzymes are polymers of amino acids.

Question 10

Which of the following is true about the S phase of the cell cycle?

Accepted Answer

DNA replication occurs during the S phase.

Question 11

A mutation in yeast makes it unable to convert pyruvate to ethanol. How will this mutation affect the yeast cells?

Accepted Answer

NAD+ will not be regenerated, causing glycolysis to stop and reducing ATP production.

Question 12

Which of the following components is present in the structure of the cell membrane?

Accepted Answer

Phospholipids

Question 13

What is the main function of the electron transport chain in mitochondria?

Accepted Answer

To create a proton gradient that drives ATP synthesis via chemiosmosis.

Question 14

Which of the following is a net end product of glycolysis?

Accepted Answer

2 pyruvate

Question 15

Which of the following best describes the movement of protons (H$^+$ ions) in the electron transport chain?

Accepted Answer

Protons are pumped from the mitochondrial matrix to the intermembrane space.

Question 16

Which of the following statements about mitosis is true?

Accepted Answer

Mitosis ensures genetic consistency.

Question 17

Which of the following molecules is oxidized and which is reduced in the reaction $\mathrm{C_6H_{12}O_6} + 6\mathrm{O_2} \rightarrow 6\mathrm{CO_2} + 6\mathrm{H_2O}$?

Accepted Answer

$\mathrm{C_6H_{12}O_6}$ is oxidized and $\mathrm{O_2}$ is reduced.

Question 18

Which checkpoint in the cell cycle ensures that all chromosomes are attached to the spindle apparatus before proceeding?

Accepted Answer

M checkpoint

Question 19

Which of the following is a function of membrane proteins?

Accepted Answer

Facilitating the transport of molecules across the membrane

Question 20

If a fertilized egg (zygote) undergoes five cell divisions, how many cells will be present?

Accepted Answer

32

General Biology: Cell Structure, Function, and Metabolism Study Guide

Study Guide - Practice Questions

Study Guide - Flashcards