Question 1

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

Accepted Answer

Ribosomes

Question 2

A scientist is using a microscope to observe the movement of vesicles along microtubules in a living cell. Which type of microscopy is most appropriate for this observation?

Accepted Answer

Fluorescence microscopy

Question 3

Which of the following best describes the function of the Golgi apparatus in a eukaryotic cell?

Accepted Answer

Sorts, modifies, and packages proteins for secretion

Question 4

A mutation causes a cell to lack functional lysosomes. Which of the following processes would be most directly affected?

Accepted Answer

Digestion of macromolecules

Question 5

Which of the following is a key difference between plant and animal cells?

Accepted Answer

Presence of a cell wall

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 best explains why mitochondria are often called the 'powerhouse' of the cell?

Accepted Answer

They generate ATP through cellular respiration

Question 8

Which of the following equations correctly represents the relationship between surface area (SA) and volume (V) for a spherical cell of radius $$r$$?

Accepted Answer

$$SA = 4\pi r^2$, V$$ = \frac{4}{3}\pi $$r^3$$

Question 9

Which of the following is NOT a function of the smooth endoplasmic reticulum (ER)?

Accepted Answer

Protein synthesis for export

Question 10

A researcher observes a cell with a thick peptidoglycan cell wall, no nucleus, and circular DNA. Which domain does this organism most likely belong to?

Accepted Answer

Bacteria

Question 11

Which of the following statements about the plasma membrane is correct?

Accepted Answer

It contains proteins and carbohydrates embedded in a phospholipid bilayer

Question 12

Which of the following best describes the role of microtubules during cell division?

Accepted Answer

They separate chromosomes

Question 13

A cell is observed to have plasmodesmata. Which of the following is true about this cell?

Accepted Answer

It is a plant cell

Question 14

Which of the following is a function of the extracellular matrix (ECM) in animal cells?

Accepted Answer

Support and regulation

Question 15

Which of the following best explains why cells are generally small in size?

Accepted Answer

To maximize the surface area-to-volume ratio for efficient exchange of materials

Question 16

A patient has a genetic disorder that affects the function of dynein motor proteins. Which cellular structure would most likely be impaired?

Accepted Answer

Cilia and flagella

Question 17

Which of the following statements about mitochondria and chloroplasts is correct?

Accepted Answer

Both contain their own DNA and ribosomes

Question 18

Which of the following intercellular junctions prevents the leakage of extracellular fluid across a layer of epithelial cells?

Accepted Answer

Tight junctions

Question 19

A cell is observed to have a large number of peroxisomes. Which of the following is the most likely function of this cell?

Accepted Answer

Oxidation of fatty acids and detoxification

Question 20

Which of the following best describes the main structural difference between microfilaments and microtubules?

Accepted Answer

Microfilaments are composed of actin, while microtubules are composed of tubulin

A Tour of the Cell: Structure, Function, and Microscopy

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