Chapter 49: Gas Exchange in Animals

 

Complete Chapter Questions With Answers

 

Sample Questions Are Posted Below

 

Multiple Choice

 

1. A key problem faced by elephants when they are swimming is
2. the pressure difference between their blood vessels and the water.
3. water entering their cells and causing lysis.
4. water leaving their cells in response to a concentration gradient.
5. infection by pathogens.
6. None of the above

Answer: a

Textbook Reference: 49.0 Why do elephants have long noses?

Page: 1025

Bloom’s Category: 2. Understanding

 

2. When elephants are swimming, what protects the blood vessels around their lungs from water pressure damage?
3. They swim only in shallow water.
4. Their lungs are attached to the chest cavity with dense connective tissue.
5. They hold their breath.
6. They have thick-walled blood vessels near their lungs.
7. Their ribs, which surround all their blood vessels, provide protection and support.

Answer: b

Textbook Reference: 49.0 Why do elephants have long noses?

Page: 1025

Bloom’s Category: 1. Remembering

 

3. An elephant uses its trunk
4. to pluck leaves from trees.
5. to pull plants from the ground.
6. to obtain water to squirt in its mouth.
7. as a snorkel.
8. All of the above

Answer: e

Textbook Reference: 49.0 Why do elephants have long noses?

Page: 1025

Bloom’s Category: 1. Remembering

 

4. At sea level, atmospheric pressure is about _______ mm mercury.
5. 454
6. 1,000
7. 760
8. 940
9. 1

Answer: c

Textbook Reference: 49.1 What Physical Factors Govern Respiratory Gas Exchange?

Page: 1026

Bloom’s Category: 1. Remembering

 

5. Breathing provides the body with the oxygen required to support the energy metabolism of all cells and also eliminates _______, one of the waste products of cell metabolism.
6. carbon dioxide
7. carbon monoxide
8. carbon tetrachloride
9. calcium carbonate
10. carbonic acid

Answer: a

Textbook Reference: 49.1 What Physical Factors Govern Respiratory Gas Exchange?

Page: 1026

Bloom’s Category: 2. Understanding