Question 1

Which of the following structures is found in both prokaryotic and eukaryotic cells and is primarily responsible for protein production?

Accepted Answer

Ribosomes

Question 2

A scientist discovers a new cell type that contains a nucleus, mitochondria, and a cell wall made of cellulose. To which kingdom does this cell most likely belong?

Accepted Answer

Plantae

Question 3

Which of the following best describes the function of the plasma membrane in both prokaryotic and eukaryotic cells?

Accepted Answer

It controls what goes in and out of the cell.

Question 4

A cell is observed under a microscope and is found to lack membrane-bound organelles. Which of the following is most likely true about this cell?

Accepted Answer

It is a prokaryotic cell.

Question 5

Which organelle is responsible for breaking down cellular waste and toxins in animal cells?

Accepted Answer

Lysosome

Question 6

A mutation causes a cell to lose its ability to produce ATP efficiently. Which organelle is most likely affected?

Accepted Answer

Mitochondria

Question 7

Which of the following is a function of the rough endoplasmic reticulum (RER) in eukaryotic cells?

Accepted Answer

Produces proteins for release outside of the cell

Question 8

A plant cell is placed in a solution and its central vacuole shrinks. What is the most likely explanation for this observation?

Accepted Answer

The cell is in a hypertonic solution and water is leaving the vacuole.

Question 9

Which of the following best explains why animal cells do not have a cell wall?

Accepted Answer

Animal cells rely on a flexible plasma membrane for movement and interaction.

Question 10

A researcher stains a human cheek cell and observes a dense, dark region inside the nucleus. What is this structure and what is its function?

Accepted Answer

Nucleolus; produces ribosome components

Question 11

Which of the following is a key difference between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells have membrane-bound organelles, prokaryotic cells do not.

Question 12

Which structure in plant cells is responsible for photosynthesis, and what is the main chemical equation for this process?

Accepted Answer

Chloroplast; $6CO_2 + 6H_2O + light \rightarrow C_6H_{12}O_6 + 6O_2$

Question 13

A cell is observed to have a large central vacuole, chloroplasts, and a cell wall. Which of the following best describes this cell?

Accepted Answer

It is a plant cell.

Question 14

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

Accepted Answer

It modifies, sorts, and packages proteins and lipids for secretion or delivery to other organelles.

Question 15

A bacterial cell is observed to have a flagellum. What is the primary function of this structure?

Accepted Answer

Movement

Question 16

Which of the following correctly matches a cell structure with its function?

Accepted Answer

Mitochondria: ATP production

Question 17

A cell is exposed to a toxin that disrupts microtubule formation. Which process would be most directly affected?

Accepted Answer

Cell division (mitosis)

Question 18

Which of the following statements about the nucleoid region in prokaryotic cells is correct?

Accepted Answer

It contains a single circular strand of DNA.

Question 19

Which of the following best explains why plant cells can maintain turgor pressure while animal cells cannot?

Accepted Answer

Plant cells have a cell wall and a large central vacuole that stores water.

Question 20

A cell is observed to have multiple nuclei, rough and smooth endoplasmic reticulum, and lysosomes. Which of the following is the best classification for this cell?

Accepted Answer

Eukaryotic animal cell

Cell Structure and Function: Prokaryotic, Animal, and Plant Cells

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