Question 1

Which statement best describes the function of the plasma membrane in a typical animal cell?

Accepted Answer

It regulates the exchange of substances between the cell and its environment.

Question 2

A red blood cell is placed in a hypertonic solution. What is the most likely outcome?

Accepted Answer

The cell will shrink due to water leaving the cell.

Question 3

Which organelle is primarily responsible for producing ATP through the breakdown of glucose?

Accepted Answer

Mitochondria

Question 4

What is the main structural difference between integral and peripheral membrane proteins?

Accepted Answer

Integral proteins are embedded within the phospholipid bilayer, while peripheral proteins are loosely bound to the membrane surface.

Question 5

Which process requires cellular energy to move substances against their concentration gradient?

Accepted Answer

Active transport

Question 6

A cell is observed to have numerous microvilli on its surface. What is the most likely function of this cell?

Accepted Answer

Absorption of nutrients

Question 7

Which of the following best describes the role of ribosomes attached to the rough endoplasmic reticulum?

Accepted Answer

They synthesize proteins that are released from the cell.

Question 8

During osmosis, water moves across a selectively permeable membrane. Which equation best represents the relationship between osmotic pressure ($$\Pi$$), solute concentration ($$C$$), gas constant ($$R$$), and temperature ($$T$$)?

Accepted Answer

$$\Pi = CRT$$

Question 9

Which organelle is responsible for packaging and chemically modifying proteins for secretion?

Accepted Answer

Golgi apparatus

Question 10

A patient’s liver cells are found to have an abnormally high number of peroxisomes. What is the most likely reason for this observation?

Accepted Answer

The cells are breaking down large amounts of fatty acids and organic compounds.

Question 11

Which of the following is NOT a function of the cytoskeleton?

Accepted Answer

Synthesizing proteins

Question 12

Which process involves the movement of small molecules through a membrane due to hydrostatic pressure?

Accepted Answer

Filtration

Question 13

Which statement about somatic and sex cells is correct?

Accepted Answer

Somatic cells are diploid and form by mitosis.

Question 14

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

Accepted Answer

It will gain water and may rupture.

Question 15

Which organelle contains digestive enzymes and is responsible for autolysis in damaged or dead cells?

Accepted Answer

Lysosome

Question 16

Which of the following best describes facilitated diffusion?

Accepted Answer

Movement of solutes down their concentration gradient via carrier proteins without energy input

Question 17

Which structure is responsible for forming the spindle apparatus during cell division?

Accepted Answer

Centrioles

Question 18

Which process involves the fusion of vesicles with the plasma membrane to release their contents outside the cell?

Accepted Answer

Exocytosis

Question 19

Which of the following is a correct statement about the phospholipid bilayer of the plasma membrane?

Accepted Answer

Hydrophilic heads face the watery environment, while hydrophobic tails are inside the membrane.

Question 20

A cell needs to rapidly transport a substance across its layer, combining endocytosis and exocytosis. Which process is being used?

Accepted Answer

Transcytosis

Chapter 3: Cells – Structure, Function, and Cellular Processes

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