Question 1

Which of the following statements best describes the fluid mosaic model of the plasma membrane?

Accepted Answer

It is a dynamic bilayer of phospholipids with proteins and cholesterol dispersed throughout, allowing lateral movement.

Question 2

A patient is experiencing muscle weakness due to impaired sodium-potassium pump activity. Which type of membrane transport is directly affected?

Accepted Answer

Active transport

Question 3

Which equation correctly represents the calculation of osmotic pressure ($$\Pi) in a $$solution?

Accepted Answer

$$\Pi = iMRT$$

Question 4

During mitosis, which phase is characterized by the alignment of chromosomes along the cell's equatorial plane?

Accepted Answer

Metaphase

Question 5

A researcher observes that certain epithelial cells are specialized for absorption and secretion. Which type of epithelial tissue is most likely being studied?

Accepted Answer

Simple columnar epithelium

Question 6

Which organelle is primarily responsible for the synthesis of proteins within a cell?

Accepted Answer

Ribosome

Question 7

A cell is placed in a hypertonic solution. What will most likely happen to the cell?

Accepted Answer

It will shrink as water leaves the cell.

Question 8

Which of the following best describes the function of tight junctions in epithelial tissue?

Accepted Answer

They form a barrier that prevents substances from passing between cells.

Question 9

Which connective tissue type is most likely to be found in tendons and ligaments, providing strong resistance to tension?

Accepted Answer

Dense regular connective tissue

Question 10

A mutation disrupts the function of lysosomes in a cell. Which process would be most directly affected?

Accepted Answer

Digestion of cellular waste and foreign material

Question 11

Which of the following is NOT a function of the plasma membrane?

Accepted Answer

Protein synthesis

Question 12

Which step in the cell cycle is responsible for the synthesis of DNA?

Accepted Answer

S phase

Question 13

Which of the following best explains why cartilage heals slowly after injury?

Accepted Answer

Cartilage contains few blood vessels, limiting nutrient and oxygen supply.

Question 14

Which process involves the movement of water across a selectively permeable membrane from an area of low solute concentration to high solute concentration?

Accepted Answer

Osmosis

Question 15

A cell is observed to engulf large particles by wrapping its plasma membrane around them and forming a vesicle. Which process is this?

Accepted Answer

Phagocytosis

Question 16

Which of the following equations correctly represents the relationship between the rate of diffusion ($$J) $$and the concentration gradient ($$\Delta C) $$according to Fick's first law?

Accepted Answer

$$J = D \frac{\Delta C}{\Delta x}$$

Question 17

Which type of muscle tissue is found in the walls of hollow organs and is responsible for involuntary movements?

Accepted Answer

Smooth muscle

Question 18

Which cell type in nervous tissue is responsible for generating and conducting electrical impulses?

Accepted Answer

Neuron

Question 19

Which of the following is a function of connective tissue?

Accepted Answer

Support

Question 20

During tissue repair, which step is responsible for restoring the blood supply to the affected area?

Accepted Answer

Organization

Cell Structure, Function, and Tissues: Study Notes for Anatomy & Physiology

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