Question 1

Which of the following best describes the role of ATP in cellular respiration?

Accepted Answer

ATP stores energy obtained from food and releases it as needed to power cellular processes.

Question 2

A cell is placed in a solution with a higher concentration of solute than inside the cell. What type of solution is this, and what will happen to a plant cell in this environment?

Accepted Answer

It is a hypertonic solution; the plant cell will lose water and become plasmolyzed.

Question 3

Which statement about enzymes is correct?

Accepted Answer

Enzymes lower the activation energy required for a reaction, speeding up the process.

Question 4

Which process requires cellular energy, usually provided by ATP, to move molecules across a membrane against their concentration gradient?

Accepted Answer

Active transport

Question 5

What is the main function of the plasma membrane in cells?

Accepted Answer

To regulate the flow of materials to and from the environment

Question 6

Which of the following best explains the concept of entropy in biological systems?

Accepted Answer

Entropy is a measure of order or randomness in a system; as energy is converted, entropy increases.

Question 7

During osmosis, which direction does water move?

Accepted Answer

From a region of lower solute concentration to higher solute concentration

Question 8

Which of the following is true about enzyme inhibitors?

Accepted Answer

Enzyme inhibitors bind to the active site or alter the enzyme's shape, reducing its activity.

Question 9

A cell uses endocytosis to engulf a bacterium. What is the name of this specific process?

Accepted Answer

Phagocytosis

Question 10

Which of the following equations correctly represents the conversion of calories to kilocalories?

Accepted Answer

$1 \mathrm{kilocalorie} = 1,000 \mathrm{calories}$

Question 11

Which statement best describes the ATP cycle in muscle cells?

Accepted Answer

ATP is continuously consumed and recycled, with ADP and phosphate recombined during cellular respiration.

Question 12

What is the function of the active site of an enzyme?

Accepted Answer

It binds to a specific substrate, allowing the enzyme to catalyze a reaction.

Question 13

Which of the following is an example of passive transport?

Accepted Answer

Diffusion of oxygen across a cell membrane without energy input

Question 14

Which process describes the movement of material out of the cytoplasm of a cell via membranous vesicles?

Accepted Answer

Exocytosis

Question 15

Which of the following best describes kinetic energy?

Accepted Answer

Energy of motion

Question 16

A solution with a lower concentration of solute compared to another solution is called:

Accepted Answer

Hypotonic

Question 17

Which of the following is true about metabolism?

Accepted Answer

Metabolism is the total of all chemical reactions in an organism.

Question 18

Which of the following statements about the conservation of energy is correct?

Accepted Answer

Energy can be converted from one form to another, but cannot be created or destroyed.

Question 19

Which of the following best describes the induced fit model of enzyme activity?

Accepted Answer

The entry of the substrate induces the enzyme's active site to change shape, improving the fit.

Question 20

Which of the following is a real-world example of chemical energy being converted to another form?

Accepted Answer

A muscle cell using ATP to contract during exercise

Cellular Energy, Enzymes, and Membrane Function: Study Notes for General Biology

Study Guide - Practice Questions

Study Guide - Flashcards