Question 1

Which of the following best explains why eukaryotic cells are able to carry out multiple incompatible chemical reactions simultaneously?

Accepted Answer

They possess internal membranes that compartmentalize cellular functions.

Question 2

A scientist wants to study the internal structure of mitochondria at very high resolution. Which type of microscope should they use?

Accepted Answer

Transmission electron microscope (TEM)

Question 3

Which organelle is primarily responsible for synthesizing lipids and detoxifying drugs in liver cells?

Accepted Answer

Smooth endoplasmic reticulum

Question 4

If a mutation prevents the formation of nuclear pores, which cellular process would be most directly affected?

Accepted Answer

Transport of mRNA from the nucleus to the cytoplasm

Question 5

Which equation correctly represents the calculation for the surface area-to-volume ratio of a cube-shaped cell with side length $$l$$?

Accepted Answer

$$\frac{6l^2$}{l^3$}$$

Question 6

A cell is observed to have a large central vacuole, chloroplasts, and a cell wall. Which type of cell is this most likely to be?

Accepted Answer

Plant cell

Question 7

Which of the following statements about mitochondria and chloroplasts supports the endosymbiont theory?

Accepted Answer

They contain circular DNA and free ribosomes.

Question 8

A patient has a genetic disorder affecting the function of dynein motor proteins. Which cellular process is most likely to be impaired?

Accepted Answer

Beating of cilia and flagella

Question 9

Which organelle is responsible for digesting macromolecules and recycling cellular components through autophagy?

Accepted Answer

Lysosome

Question 10

During differential centrifugation, which cellular component would pellet at the lowest centrifugal force due to its large size?

Accepted Answer

Nuclei

Question 11

Which structure in animal cells connects the extracellular matrix to the cytoskeleton and is involved in cell signaling?

Accepted Answer

Integrin

Question 12

A freshwater protist uses a contractile vacuole to pump excess water out of the cell. What would happen if this vacuole failed to function?

Accepted Answer

The cell would swell and possibly burst due to osmotic pressure.

Question 13

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

Accepted Answer

Synthesizing proteins

Question 14

Which cell junction prevents the leakage of extracellular fluid between neighboring animal cells?

Accepted Answer

Tight junction

Question 15

A mutation causes a plant cell to lack pectin in its middle lamella. What is the most likely consequence?

Accepted Answer

Weakened adhesion between adjacent plant cells

Question 16

Which process is most directly facilitated by the rough endoplasmic reticulum?

Accepted Answer

Synthesis of glycoproteins

Question 17

Which of the following best describes the role of peroxisomes in liver cells?

Accepted Answer

They detoxify alcohol and other harmful compounds.

Question 18

Which of the following structures is found in both prokaryotic and eukaryotic cells?

Accepted Answer

Ribosome

Question 19

Which organelle is most directly involved in modifying, sorting, and packaging proteins for secretion?

Accepted Answer

Golgi apparatus

Question 20

A cell is observed to have an extensive network of microvilli. What is the most likely function of this cell?

Accepted Answer

Increased absorption of nutrients

A Tour of the Cell: Structure, Function, and Study of Cells

Study Guide - Practice Questions