Question 1

Which of the following best describes the function of a receptor in a homeostatic feedback loop?

Accepted Answer

It detects changes in the internal or external environment.

Question 2

A cell placed in a hypotonic solution will:

Accepted Answer

Swell as water enters the cell.

Question 3

Which organelle is primarily responsible for cellular respiration and ATP production?

Accepted Answer

Mitochondria

Question 4

Which of the following is an example of positive feedback?

Accepted Answer

Childbirth contractions

Question 5

The plasma membrane is composed of a bilayer of phospholipids. The head portion of these molecules faces:

Accepted Answer

Both the outside of the cell and the inside of the cell

Question 6

Which of the following best describes the movement of water across a membrane from an area of low solute concentration to high solute concentration?

Accepted Answer

Osmosis

Question 7

A blood cell is placed in a 30% solute solution. What happens to the blood cell?

Accepted Answer

The cell shrinks

Question 8

Which of the following statements about negative feedback is TRUE?

Accepted Answer

Negative feedback is self-terminating.

Question 9

Which organelle packages proteins and lipids made in the rough ER and transports them in vesicles?

Accepted Answer

Golgi apparatus

Question 10

Which of the following transport mechanisms requires energy input from ATP?

Accepted Answer

Primary active transport

Question 11

A molecule is transported against its concentration gradient from an area of low concentration to high concentration. This is an example of:

Accepted Answer

Active transport

Question 12

Which of the following best describes the difference between facilitated diffusion and simple diffusion?

Accepted Answer

Facilitated diffusion uses membrane proteins to transport molecules, while simple diffusion does not.

Question 13

If a red blood cell is placed in distilled water, what type of solution is this?

Accepted Answer

Hypotonic solution

Question 14

Which of the following cell junctions prevents the passage of materials between cells?

Accepted Answer

Tight junction

Question 15

Which of the following is TRUE about isotonic solutions?

Accepted Answer

There is no net movement of water into or out of the cell.

Question 16

Which of the following best describes the role of the control center in a homeostatic feedback loop?

Accepted Answer

It processes information and determines the appropriate response.

Question 17

Which organelle contains digestive enzymes that degrade cellular waste?

Accepted Answer

Lysosome

Question 18

Which of the following is a function of the plasma membrane?

Accepted Answer

Regulating the movement of substances into and out of the cell

Question 19

Which of the following best describes the process of osmosis?

Accepted Answer

Movement of water from low solute concentration to high solute concentration across a semi-permeable membrane

Question 20

Which of the following is TRUE regarding primary active transport?

Accepted Answer

It directly uses ATP to move molecules against their concentration gradient.

Foundations of Anatomy & Physiology: Cells, Homeostasis, and Membrane Transport

Study Guide - Practice Questions