Chapter 6

Question 1

What is breathing also known as?

Answer 1

Ventilation

Question 2

What is breathing?

Answer 2

The movement of gasses into and out of the body

Question 3

What is gaseous exchange?

Answer 3

It is when oxygen and carbon dioxide are exchanged across a membrane

Question 4

What is the surface where gas exchange occurs, called?

Answer 4

Respiratory surface

Question 5

How do gases cross the respirator surface?

Answer 5

By diffusion

Question 6

What are four adaptations of the respiratory surface?

Answer 6

1. Moist
2. Thin
3. Large surface area
4. Good blood supple

Question 7

What are two examples of a respiratory surface?

Answer 7

1. Cell membrane in unicellular organisms
2. Stomata in plants

Question 8

Why do we not get affected by pathogens?

Answer 8

Goblet cells: Produce mucus that traps the dust, dirt and bacteria
Ciliated cells: Possess cilia that beat to sweep away the mucus

Question 9

What does surface area to volume ratio tell you?

Answer 9

How much exposure a cell or organism has to the environment

Question 10

What is ventilation?

Answer 10

The movement of air into and out of the lungs.