Question 1

Which component of the cytoskeleton is primarily responsible for the separation of chromosomes during cell division?

Accepted Answer

Microtubules

Question 2

A researcher observes a tissue sample under a microscope and notes the presence of many tightly packed cells with an apical surface exposed to the lumen and a basal surface attached to a basement membrane. Which tissue type is being observed?

Accepted Answer

Epithelial tissue

Question 3

Which of the following best describes the function of tight junctions between epithelial cells?

Accepted Answer

They form a watertight seal, preventing fluid from moving across a layer of cells.

Question 4

Which cytoskeletal element is most directly involved in the formation of microvilli on the surface of intestinal epithelial cells?

Accepted Answer

Microfilaments (actin)

Question 5

A patient has a genetic disorder affecting the protein keratin. Which cellular structure is most likely to be compromised?

Accepted Answer

Intermediate filaments

Question 6

Which of the following is a correct statement about the extracellular matrix (ECM) in connective tissue?

Accepted Answer

It contains collagen fibers that provide tensile strength.

Question 7

Which type of muscle tissue is striated and under voluntary control?

Accepted Answer

Skeletal muscle

Question 8

A scientist is using a microscope to observe the movement of vesicles along cytoskeletal fibers. Which motor protein and cytoskeletal element are most likely involved in this process?

Accepted Answer

Kinesin and microtubules

Question 9

Which of the following best explains why simple squamous epithelium is found in the air sacs of the lungs?

Accepted Answer

Its flat shape facilitates efficient diffusion of gases.

Question 10

Which of the following is a key difference between cilia and flagella?

Accepted Answer

Cilia are shorter and often more numerous per cell than flagella.

Question 11

Which of the following best describes the function of gap junctions?

Accepted Answer

They allow direct communication between adjacent cells by permitting the passage of ions and small molecules.

Question 12

Which connective tissue cell type is primarily responsible for producing collagen fibers?

Accepted Answer

Fibrocyte

Question 13

A sample of tissue is found to have cells embedded in a hard matrix containing calcium, magnesium, and phosphate. Which tissue is this?

Accepted Answer

Bone

Question 14

Which of the following statements about the cytoskeleton is correct?

Accepted Answer

It is a dynamic network of fibers that can be quickly dismantled and reassembled to change cell shape and position of cell components.

Question 15

Which type of microscopy would be most appropriate for observing the detailed internal structure of mitochondria?

Accepted Answer

Transmission electron microscopy (TEM)

Question 16

Which of the following best describes the role of actin and myosin in muscle tissue?

Accepted Answer

They enable muscle contraction by sliding past each other.

Question 17

A tissue sample contains cells specialized for rapid communication and control, with long extensions called axons. Which tissue is this?

Accepted Answer

Nervous tissue

Question 18

Which of the following is a function of adipose tissue?

Accepted Answer

Fuel storage, insulation, and padding

Question 19

Which of the following best explains why tendons are strong and resistant to stretching?

Accepted Answer

They contain a dense collection of collagen fibers.

Question 20

A scientist is studying the movement of sperm cells. Which cytoskeletal structure is primarily responsible for the movement of the flagellum?

Accepted Answer

Microtubules

LESSON 4: Form and Function of Cells and Tissues: Cytoskeleton, Intercellular Connections, and Basic Tissue Types

Study Guide - Practice Questions

Study Guide - Flashcards