Question 1

Which of the following best describes the primary function of the plasma membrane in eukaryotic cells?

Accepted Answer

It acts as a selective barrier, regulating the passage of O$$_2$$, nutrients, and waste.

Question 2

A liver cell exposed to high levels of alcohol will likely show an increase in which organelle, and why?

Accepted Answer

Smooth ER, because it detoxifies lipid-soluble drugs and alcohol.

Question 3

Which of the following correctly matches the organelle with its function?

Accepted Answer

Mitochondrion – aerobic respiration and ATP production

Question 4

A mutation that disrupts the function of dynein would most directly affect which cellular process?

Accepted Answer

Sliding movement of cilia and flagella

Question 5

Which of the following equations represents the detoxification reaction catalyzed by peroxisomes?

Accepted Answer

$$2 \mathrm{H}_2\mathrm{O}_2 \rightarrow 2 \mathrm{H}_2\mathrm{O} + \mathrm{O}_2$$

Question 6

A plant cell placed in pure water will swell but not burst. Which structure is primarily responsible for this outcome?

Accepted Answer

Central vacuole and cell wall

Question 7

Which of the following best explains why mitochondria are abundant in muscle cells?

Accepted Answer

Muscle cells require large amounts of ATP for contraction.

Question 8

A protein destined for secretion from a cell will follow which correct sequence of organelles?

Accepted Answer

Rough ER → Golgi apparatus → Transport vesicle → Plasma membrane

Question 9

Which cytoskeletal element is most directly involved in the movement of chromosomes during mitosis?

Accepted Answer

Microtubules

Question 10

A genetic disorder causes a defect in the nuclear lamina. Which of the following cellular processes is most likely to be affected?

Accepted Answer

Maintenance of nuclear shape and organization of chromosomes

Question 11

Which of the following statements about the endomembrane system is correct?

Accepted Answer

It is responsible for the synthesis, modification, and transport of proteins and lipids.

Question 12

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

Accepted Answer

It provides structural support, helps cells attach, and coordinates cellular activities.

Question 13

A cell is observed to have an extensive network of actin filaments just beneath its plasma membrane. Which function is this network most likely supporting?

Accepted Answer

Maintenance of cell shape and cell movement

Question 14

Which of the following is a unique feature of plant cells not found in animal cells?

Accepted Answer

Central vacuole

Question 15

A patient is diagnosed with a genetic disorder affecting keratin production. Which cellular structure is most likely compromised?

Accepted Answer

Intermediate filaments

Question 16

Which of the following best explains why lysosomal storage diseases often result in the accumulation of undigested macromolecules?

Accepted Answer

Lysosomes lack the necessary enzymes to break down certain substances.

Question 17

Which of the following is a function of the central vacuole in plant cells?

Accepted Answer

Storage of nutrients, pigments, and waste products

Question 18

Which of the following best describes the arrangement of microtubules in a eukaryotic flagellum?

Accepted Answer

9 + 2 arrangement

Question 19

A scientist observes a cell with a large number of peroxisomes. Which metabolic process is most likely occurring at a high rate in this cell?

Accepted Answer

Fatty acid breakdown and detoxification of alcohol

Question 20

Which of the following is a direct consequence of a mutation that prevents the formation of the nuclear pore complex?

Accepted Answer

Impaired exchange of materials between the nucleus and cytoplasm

A Tour of the Cell: Structure and Function of Eukaryotic Cells

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드