Chapter 08: The Respiratory System

Chapter 08: The Respiratory System

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

MULTIPLE CHOICE

1. What is the primary purpose of the respiratory system?

ANS:  A

The respiratory system’s primary function is the continuous absorption of oxygen and the excretion of carbon dioxide.

DIF:    Application    REF:   p. 148            OBJ:   1

2. What is meant by “internal respiration”?

ANS:  D

This process supports internal respiration, which is the exchange of gases between blood and tissues.

DIF:    Application    REF:   p. 148            OBJ:   1

3. By what mechanism does gas exchange across the lung occur?

ANS:  D

This close “match” of gas and blood across a large but extremely thin blood-gas barrier membrane enables efficient gas exchange to occur by simple diffusion.

DIF:    Application    REF:   p. 148            OBJ:   1

4. The human genome contains _____ pairs of chromosomes.

ANS:  B

DNA is organized into 23 pairs of supercoiled masses that are called chromosomes.

DIF:    Recall             REF:   p. 150            OBJ:   2

5. Which chromosome has been found to carry the defective gene responsible for the development of cystic fibrosis?

ANS:  B

The defective gene that is responsible for defective CFTR is located on chromosome 7 in the q31.2 region and has been found to be mutable in more than 1500 different ways.

DIF:    Recall             REF:   p. 191            OBJ:   2