B8 - Exchange and Transport in Animals

Question 1

Where does gas exchange occur in animals?

Answer 1

In the lungs (alveoli).

Question 2

True or False: Gas exchange in animals primarily occurs in the heart.

Answer 2

False.

Question 3

What are the tiny air sacs in the lungs called?

Answer 3

Alveoli.

Question 4

Fill in the blank: The process of gas exchange involves the transfer of ____ and ____.

Answer 4

oxygen and carbon dioxide.

Question 5

What is the primary function of alveoli?

Answer 5

To facilitate the exchange of gases between the air and blood.

Question 6

Multiple choice: What gas is primarily inhaled during respiration?

Answer 6

Oxygen.

Question 7

What gas is primarily exhaled during respiration?

Answer 7

Carbon dioxide.

Question 8

True or False: The surface area of alveoli is small to maximize gas exchange efficiency.

Answer 8

False.

Question 9

How does oxygen enter the bloodstream?

Answer 9

Through the walls of the alveoli into the capillaries.

Question 10

What is the role of hemoglobin in gas exchange?

Answer 10

To transport oxygen from the lungs to the tissues and carbon dioxide from the tissues to the lungs.

Question 11

Fill in the blank: The exchange of gases occurs by the process of ____.

Answer 11

diffusion.

Question 12

What is the significance of the moist surface of alveoli?

Answer 12

It facilitates the diffusion of gases.

Question 13

Multiple choice: Which of the following structures is involved in gas exchange?

Answer 13

Alveoli.

Question 14

What is the primary component of the respiratory system that allows gas exchange?

Answer 14

Lungs.

Question 15

True or False: Gas exchange can occur in the skin of some animals.

Answer 15

True.

Question 16

What is the main purpose of the respiratory system in animals?

Answer 16

To supply the body with oxygen and remove carbon dioxide.

Question 17

Fill in the blank: The process of inhalation increases the ____ in the thoracic cavity.

Answer 17

volume.

Question 18

What happens during exhalation?

Answer 18

The diaphragm relaxes, decreasing the volume of the thoracic cavity and expelling air.

Question 19

Multiple choice: Which structure helps to filter and warm the air before it reaches the lungs?

Answer 19

Nasal cavity.

Question 20

What is the term for the exchange of gases in the tissues?

Answer 20

Tissue respiration.

Question 21

True or False: The concentration gradient is not important for gas exchange.

Answer 21

False.

Question 22

What is the role of surfactant in the alveoli?

Answer 22

To reduce surface tension and prevent alveolar collapse.

Question 23

Fill in the blank: The respiratory system works closely with the ____ system to transport gases.

Answer 23

circulatory.

Question 24

What is the primary mechanism of gas exchange in the alveoli?

Answer 24

Diffusion due to concentration gradients.

Question 25

True or False: All animals use lungs for gas exchange.

Answer 25

False.

Question 26

What happens to the carbon dioxide produced by cells?

Answer 26

It is transported back to the lungs to be exhaled.