Question 1

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

Accepted Answer

It controls the passage of substances into and out of the cell, maintaining selective permeability.

Question 2

A red blood cell placed in a hypotonic solution will most likely:

Accepted Answer

Swell and potentially burst due to water entering the cell.

Question 3

Which organelle is primarily responsible for energy production in the cell, and what is the main process it uses?

Accepted Answer

Mitochondrion; aerobic respiration

Question 4

A cell is observed to engulf large particles such as bacteria. Which process is being utilized?

Accepted Answer

Phagocytosis

Question 5

Which of the following membrane proteins is responsible for facilitating the movement of substances across the membrane?

Accepted Answer

Transport/channel proteins

Question 6

During aerobic respiration, how many ATP molecules are produced per glucose molecule? Provide the equation for aerobic respiration.

Accepted Answer

36-38 ATP; $$C_6H_{12}O_6$ + 6O_2 \rightarrow 6CO_2 + 6H_2O + 36-38ATP$$

Question 7

Which statement best explains the difference between simple diffusion and facilitated diffusion?

Accepted Answer

Facilitated diffusion involves membrane proteins to help move molecules, while simple diffusion does not.

Question 8

A patient has a genetic mutation affecting the structure of microtubules. Which cellular process is most likely to be impaired?

Accepted Answer

Cell division and movement of organelles

Question 9

Which of the following best describes the role of the Golgi complex in the cell?

Accepted Answer

It modifies, sorts, and packages proteins and lipids for delivery.

Question 10

Which process is responsible for copying DNA into mRNA, and where does it occur?

Accepted Answer

Transcription; nucleus

Question 11

A cell is exposed to a toxin that inhibits ATP production. Which transport mechanism will be most affected?

Accepted Answer

Active transport

Question 12

Which of the following is TRUE regarding somatic cell division (mitosis)?

Accepted Answer

It produces two identical daughter cells for growth and repair.

Question 13

Which organelle contains hydrolytic enzymes for digestion and recycling of cellular components?

Accepted Answer

Lysosome

Question 14

A cell is placed in a hypertonic solution. What is the expected outcome?

Accepted Answer

Water leaves the cell, causing it to shrink (crenation).

Question 15

Which of the following statements about the fluid mosaic model is correct?

Accepted Answer

Proteins are interspersed within the phospholipid bilayer, allowing dynamic movement and flexibility.

Question 16

Which of the following is a function of peroxisomes?

Accepted Answer

Detoxification of alcohol and breakdown of fatty acids

Question 17

Which process is described by the movement of molecules from high to low concentration until equilibrium is reached, without energy or carrier proteins required?

Accepted Answer

Simple diffusion

Question 18

A cell with defective recognition proteins on its plasma membrane would most likely have difficulty with:

Accepted Answer

Identifying self from non-self, leading to immune system issues.

Question 19

Which of the following best describes apoptosis?

Accepted Answer

Genetically programmed, age-related cell death that does not trigger inflammation.

Question 20

Which equation best represents the process of anaerobic respiration in human cells?

Accepted Answer

$$C_6H_{12}O_6$ \rightarrow 2C_3H_6O_3 + 2ATP$$

Cellular Level of Organization: Structure and Function of Cells

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