Q: Which of the following equations correctly represents the overall process of 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 a dehydration synthesis reaction in the formation of macromolecules?

Accepted Answer

A reaction in which two monomers are joined together by removing a molecule of water.

Question 2

Which of the following is NOT a function of proteins in living organisms?

Accepted Answer

Storing genetic information for inheritance.

Question 3

A patient is given an intravenous solution that is hypertonic relative to their blood plasma. What is the most likely effect on their red blood cells?

Accepted Answer

The red blood cells will shrink as water leaves the cells.

Question 4

Which of the following statements about the structure of phospholipids is correct and explains their role in cell membranes?

Accepted Answer

Phospholipids have two hydrophobic tails and a hydrophilic head, allowing them to form bilayers in water.

Question 5

Which of the following best describes the difference between prokaryotic and eukaryotic cells?

Accepted Answer

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

Question 6

A scientist observes a cell with a large central vacuole, chloroplasts, and a cell wall. Which type of cell is being observed?

Accepted Answer

Plant cell

Question 7

Which of the following equations correctly represents the overall process of 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 8

Which of the following best explains why enzymes are necessary for many cellular reactions?

Accepted Answer

Enzymes decrease the activation energy, allowing reactions to occur more rapidly at cellular temperatures.

Question 9

A cell is placed in a solution and water moves into the cell, causing it to swell. Which type of solution is the cell in?

Accepted Answer

Hypotonic solution

Question 10

Which of the following best describes the function of mitochondria in eukaryotic cells?

Accepted Answer

They generate ATP through cellular respiration.

Question 11

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

Accepted Answer

It requires ATP to move ions against their concentration gradients.

Question 12

Which of the following best describes the role of microtubules in eukaryotic cells?

Accepted Answer

They provide structural support and are involved in chromosome movement during cell division.

Question 13

Which of the following is a correct statement about the difference between DNA and RNA?

Accepted Answer

DNA contains thymine, while RNA contains uracil.

Question 14

Which of the following best explains why the shape of a protein is important for its function?

Accepted Answer

The shape determines how the protein interacts with other molecules.

Question 15

Which of the following best describes the function of the Golgi apparatus?

Accepted Answer

It modifies, sorts, and packages proteins and lipids for secretion or delivery to other organelles.

Question 16

Which of the following is a correct statement about facilitated diffusion?

Accepted Answer

It uses transport proteins to move molecules down their concentration gradient.

Question 17

Which of the following best describes the function of tight junctions in animal cells?

Accepted Answer

They prevent the leakage of extracellular fluid between adjacent cells.

Question 18

Which of the following best describes the first law of thermodynamics as it applies to biological systems?

Accepted Answer

Energy is neither created nor destroyed, but can be transformed from one form to another.

Question 19

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

Accepted Answer

NADH carries electrons to the electron transport chain, where they are used to generate ATP.

Question 20

A muscle cell is rapidly using ATP during intense exercise. Which process is most likely to increase in the cell to meet the energy demand?

Accepted Answer

Cellular respiration

General Biology: Core Concepts and Study Guide

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