Question 1

Which of the following best describes selective permeability of the cell membrane?

Accepted Answer

A membrane that allows some substances to pass while restricting others.

Question 2

During an experiment, a dialysis bag containing a 10% NaCl solution is placed in a beaker of distilled water. What will happen to the water movement?

Accepted Answer

Water will move into the bag by osmosis.

Question 3

Which factor does NOT directly affect the rate of diffusion across a cell membrane?

Accepted Answer

The color of the molecule

Question 4

A red blood cell is placed in a hypotonic solution. What is the most likely outcome?

Accepted Answer

The cell will swell and may burst (hemolysis).

Question 5

Which equation best represents the concept of a concentration gradient?

Accepted Answer

$$C_{gradient} = C_{high} - C_{low}$$

Question 6

In the agar plate diffusion experiment, which dye would diffuse faster: methylene blue (MW 319.8) or potassium permanganate (MW 158.04)?

Accepted Answer

Potassium permanganate, because it has a lower molecular weight.

Question 7

Which of the following is true about osmosis?

Accepted Answer

Osmosis is the movement of water across a semipermeable membrane.

Question 8

A cell is placed in an isotonic solution. What will happen to its volume?

Accepted Answer

The cell volume will remain unchanged.

Question 9

Which type of epithelial tissue is best suited for rapid diffusion and is found lining the alveoli of the lungs?

Accepted Answer

Simple squamous epithelium

Question 10

If a dialysis bag containing a sucrose/dye solution is placed in distilled water, what would you expect to observe after several hours?

Accepted Answer

The dye will diffuse out and the bag will gain water.

Question 11

Which of the following best explains why cell membranes are less permeable to large solutes?

Accepted Answer

Large solutes cannot fit through the membrane pores.

Question 12

Which tissue type is responsible for communication within the body?

Accepted Answer

Nervous tissue

Question 13

A cell membrane is impermeable to glucose but permeable to water. If the cell is placed in a 10% glucose solution, what will happen?

Accepted Answer

Water will leave the cell, causing it to shrink.

Question 14

Which of the following is a function of epithelial tissue?

Accepted Answer

Protection, absorption, and secretion

Question 15

Which equation describes the net movement of water during osmosis?

Accepted Answer

$$Net\ Water\ Movement = Water_{low\ solute} \rightarrow Water_{high\ solute}$$

Question 16

Which of the following epithelial cell shapes is best described as 'taller than they are wide'?

Accepted Answer

Columnar

Question 17

Which tissue type is found lining the urinary bladder and is capable of stretching?

Accepted Answer

Transitional epithelium

Question 18

Which of the following statements about tonicity is correct?

Accepted Answer

An isotonic solution has the same solute concentration as the cytosol.

Question 19

Which of the following is NOT a characteristic of epithelial tissue?

Accepted Answer

Contains large amounts of extracellular matrix

Question 20

A cell is placed in a solution and begins to shrink. What can you infer about the solution?

Accepted Answer

It is hypertonic to the cell.

Cell Membrane Transport, Diffusion, Osmosis, and Tissue Types

Study Guide - Practice Questions