Test Bank For Principles of Anatomy & Physiology 14th edition by Gerard J Tortora

Test Bank For Principles of Anatomy & Physiology 14th edition by Gerard J Tortora

Question type: Multiple Choice

1) What are the three main parts of a eukaryotic cell?

a) plasma membrane, organelles, cytoplasm

b) plasma membrane, organelles, nucleus

c) plasma membrane, cytoplasm, organelles

d) plasma membrane, cytoplasm, nucleus

e) plasma membrane, cytosol, organelles

Answer: d

Difficulty: Medium

Study Objective 1: SO 3.1 Name and describe the three main parts of a cell.

Section Reference 1: Sec 3.1 Parts of a Cell

Question type: Essay

2) Briefly describe the fluid mosaic model.

Answer:

Difficulty: Medium

Study Objective 1: SO 3.2 Describe the structure and functions of the plasma membrane.

Section Reference 1: Sec 3.2 The Plasma Membrane

Solution: The fluid mosaic model states that the molecular arrangement of the plasma membrane resembles an ever-moving sea of fluid lipids containing a mosaic of many different proteins.

Question type: Multiple Choice

3) The three main components of the lipid bilayer portion of a plasma membrane are

a) phospholipids, glycoproteins, and water.

b) proteins, cholesterol, and fatty acids.

c) cholesterol, triglycerides, and glycolipids.

d) phospholipids, cholesterol, and glycolipids.

e) phospholipids, cholesterol, and proteins.

Answer: d

Difficulty: Medium

Study Objective 1: SO 3.2 Describe the structure and functions of the plasma membrane.

Study Objective 2: SO 3.2.2 Explain the concept of selective permeability.

Section Reference 1: Sec 3.2 The Plasma Membrane

4) What are the nonpolar parts of phospholipids?

a) phosphate-containing head groups

b) fatty acid tail groups

c) Both the head and tail groups are nonpolar.

d) Neither the head nor tail groups are nonpolar.

Answer: b

Difficulty: Medium

Study Objective 1: SO 3.2 Describe the structure and functions of the plasma membrane.

Study Objective 2: SO 3.2.2 Explain the concept of selective permeability.

Section Reference 1: Sec 3.2 The Plasma Membrane

5) The polar portion of a cholesterol molecule, which forms hydrogen bonds with the polar heads of neighboring phospholipids and glycolipids, consists of a

a) –OH group.

b) –CH₃ group.

c) –CH₄ group

d) –COOH group

e) None of these choices is correct.

Answer: a

Difficulty: Hard

Study Objective 1: SO 3.2 Describe the structure and functions of the plasma membrane.

Study Objective 2: SO 3.2.2 Explain the concept of selective permeability.

Section Reference 1: Sec 3.2 The Plasma Membrane