Question 1

Which of the following best explains why eukaryotic cells are able to carry out specialized chemical reactions in different regions of the cell?

Accepted Answer

They possess internal membranes that divide the cell into organelles, allowing compartmentalization of functions.

Question 2

A scientist observes a cell with a nucleus, mitochondria, and endoplasmic reticulum. Which domain does this cell most likely belong to?

Accepted Answer

Eukarya

Question 3

Which organelle is primarily responsible for synthesizing ATP through cellular respiration?

Accepted Answer

Mitochondrion

Question 4

If a cell's surface area increases by a factor of 4, by what factor does its volume increase, assuming the cell maintains a spherical shape? Use the formulas $$A = 4\pi r^2$ and V$$ = \frac{4}{3}\pi $$r^3.$$

Accepted Answer

8

Question 5

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

Accepted Answer

It is composed of a double layer of phospholipids and controls selective passage of materials.

Question 6

A mutation prevents the formation of ribosomes in a cell. Which process would be most directly affected?

Accepted Answer

Protein synthesis

Question 7

Which organelle modifies, sorts, and packages proteins for secretion or delivery to other organelles?

Accepted Answer

Golgi apparatus

Question 8

During autophagy, which organelle is responsible for digesting damaged organelles?

Accepted Answer

Lysosome

Question 9

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

Accepted Answer

Synthesizing proteins

Question 10

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

Accepted Answer

The cell would accumulate water and potentially burst.

Question 11

Which structure is found in plant cells but not in animal cells, and helps prevent excessive uptake of water?

Accepted Answer

Cell wall

Question 12

Which of the following best describes the role of the extracellular matrix (ECM) in animal cells?

Accepted Answer

It is made of glycoproteins and helps coordinate cellular activities.

Question 13

Which organelle is the site of lipid synthesis and detoxification of drugs and poisons?

Accepted Answer

Smooth endoplasmic reticulum

Question 14

A cell is observed to have a large central vacuole containing sap. What type of cell is this most likely?

Accepted Answer

Plant cell

Question 15

Which of the following is a correct sequence for the flow of genetic information in eukaryotic cells?

Accepted Answer

DNA → RNA → Protein

Question 16

Which cytoskeletal component is primarily responsible for separating chromosomes during cell division?

Accepted Answer

Microtubules

Question 17

A cell is unable to produce collagen, a major glycoprotein of the extracellular matrix. Which process would be most affected?

Accepted Answer

Cell-to-cell communication and structural support

Question 18

Which of the following best describes the function of peroxisomes?

Accepted Answer

They break down fatty acids and detoxify harmful substances.

Question 19

If a mutation disrupts the structure of microtubules, which cellular process would be most directly affected?

Accepted Answer

Chromosome separation during mitosis

Question 20

Which organelle contains the green pigment chlorophyll and is the site of photosynthesis?

Accepted Answer

Chloroplast

Chapter 6: Tour of the Cell – Structure and Function of Eukaryotic Cells

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