Question 1

Which cellular structure is primarily responsible for producing movement by interacting with actin filaments?

Accepted Answer

Thick filaments composed of myosin

Question 2

During cell division, which structure directs the movement of chromosomes?

Accepted Answer

Centrioles

Question 3

A sperm cell uses which structure to move through the female reproductive tract?

Accepted Answer

Flagellum

Question 4

Which of the following structures increases the surface area of a cell for absorption?

Accepted Answer

Microvilli

Question 5

If a cell is unable to form cilia, which function would be most directly impaired?

Accepted Answer

Movement of fluids across the cell surface

Question 6

Which structure is anchored by a basal body and beats rhythmically to move fluids?

Accepted Answer

Cilia

Question 7

A patient has a genetic defect affecting the formation of centrioles. Which cellular process would most likely be disrupted?

Accepted Answer

Cell division

Question 8

Which of the following is TRUE regarding the flagellum?

Accepted Answer

It enables sperm to swim in the female reproductive tract

Question 9

Which structure is NOT involved in increasing the cell's surface area?

Accepted Answer

Flagellum

Question 10

A researcher observes a cell with numerous fingerlike projections on its membrane. What is the primary function of these projections?

Accepted Answer

Increase in surface area for absorption

Question 11

Which of the following best describes the relationship between centrioles and cilia?

Accepted Answer

Centrioles form the bases of cilia

Question 12

Which structure is composed mainly of the protein myosin and is essential for muscle contraction?

Accepted Answer

Thick filaments

Question 13

A cell lacking centrioles would have difficulty forming which of the following?

Accepted Answer

Cilia and flagella

Question 14

Which of the following is a plausible consequence of defective microvilli in intestinal cells?

Accepted Answer

Reduced absorption of nutrients

Question 15

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

Accepted Answer

Centrioles

Question 16

Which of the following structures is found only on sperm cells in humans?

Accepted Answer

Flagellum

Question 17

Which structure would be most affected in a patient with a disorder that impairs microtubule formation?

Accepted Answer

Cilia

Question 18

A cell with defective thick filaments would most likely have problems with which function?

Accepted Answer

Movement produced by myosin and actin interaction

Question 19

Which of the following is a multi-step process involving centrioles during cell division?

Accepted Answer

Formation of spindle fibers and directing chromosome movement

Question 20

A cell is observed to have a whip-like projection that enables it to move. Which structure is this, and what is its function?

Accepted Answer

Flagellum; moves the cell through surrounding fluid

Cellular Structures and Their Functions in Animal Cells

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