Test Bank For Introduction To The Human Body, 9th Edition by Gerard J. Tortora

Chapter Number: 3

Question type: Multiple Choice

1) The plasma membrane consists of

a) cellulose and carbohydrates.

b) mostly proteins.

c) only phospholipids.

d) phospholipids, proteins, and carbohydrates.

e) only carbohydrates and lipids.

Answer: d

Difficulty: Medium

Learning Objective 1: LO 3.2 Describe the structure and functions of the plasma membrane.

Section Reference 1: Section 3.2 The Plasma Membrane.

2) The cytoplasm is a term that refers to

a) all cell organelles combined.

b) microtubules and microfilaments only.

c) the fluid portion of the cell.

d) the cytosol plus cell organelles.

e) the communication center of the cell.

Answer: d

Difficulty: Easy

Learning Objective 1: LO 3.1 Name and describe the three main parts of a cell.

Section Reference 1: Section 3.1 A Generalized View of the Cell.

3) Which of the following statements are TRUE for the plasma membrane?

a) It is selectively permeable.

b) It contains glycoproteins.

c) It contains cholesterol.

d) It is selectively permeable and contains glycoproteins.

e) It is selectively permeable and contains glycoproteins and cholesterol.

Answer: e

Difficulty: Medium

Learning Objective 1: LO 3.2 Describe the structure and functions of the plasma membrane.

Section Reference 1: Section 3.2 The Plasma Membrane.

4) The lipid bilayer of the plasma membrane is permeable to all of the following substances EXCEPT

a) amino acids.

b) fat-soluble vitamins.

c) steroids.

d) oxygen.

e) water.

Answer: a

Difficulty: Hard

Learning Objective 1: LO 3.2 Describe the structure and functions of the plasma membrane.

Section Reference 1: Section 3.2 The Plasma Membrane.

5) Endocytosis is an example of

a) excretion.

b) passive transport.

c) active transport.

d) facilitated diffusion.

e) simple diffusion.

Answer: c

Difficulty: Medium

Learning Objective 1: LO 3.3 Describe the processes that transport substances across the plasma membrane.

Section Reference 1: Section 3.3 Transport Across the Plasma Membran