Chapter 5 - Respiration and Breathing System

Question 1

Respiration

Answer 1

The release of energy from food

Question 2

What is the function of our breathing system?

Answer 2

Our breathing system allows us to take oxygen into our bodies and it also allows us to get rid of the waste products that are produced in respiration

Question 3

Aerobic respiration

Answer 3

Aerobic respiration needs oxygen to release energy from food

Question 4

What is the equation for aerobic respiration?

Answer 4

oxygen + glucose –> energy + carbon dioxide + water vapour

O2 + C6H12O6 –> Energy + CO2 + H2O

Question 5

What is breathing?

Answer 5

The way in which animals take in oxygen and release carbon dioxide and water

Question 6

What happens when we breathe in?

Answer 6

Oxygen passes from our lungs to our bloodstream. The blood then carries the oxygen to all cells of our body The oxygen is used in each cell to carry out respiration

Question 7

What waste products are produced in cellular respiration?

Answer 7

Carbon dioxide and water vapour

Question 8

What happens when we breath out?

Answer 8

The carbon dioxide and water vapour produced in respiration enter the bloodstream and are carried to the lungs. The carbon dioxide and water vapour pass from the blood into the lungs and are breathed out

Question 9

What is the function of the nose?

Answer 9

The nose cleans, warms and moistens air

Question 10

What is the function of the trachea?

Answer 10

The trachea carries air to and from the lungs

Question 11

What is the function of the bronchi?

Answer 11

The bronchi carry air between the trachea and the lungs

Question 12

What is the function of the bronchioles?

Answer 12

The bronchioles allow air to pass to and from the alveoli

Question 13

What is the function of the alveoli?

Answer 13

The alveoli allow gas exchange

Question 14

What is the function of the diaphragm and the intercostal muscles?

Answer 14

The diaphragm and the intercostal muscles cause air to move in or out of the lungs

Question 15

What is the % of nitrogen in inhaled air versus exhaled air

Answer 15

Inhaled - 78%

Exhaled - 78%

Question 16

What is the % of oxygen in inhaled air versus exhaled air?

Answer 16

Inhaled - 21%

Exhaled - 16%

Question 17

What is the % of carbon dioxide in inhaled air versus exhaled air?

Answer 17

Inhaled - 0.04%

Exhaled - 4%

Question 18

What is the % of water vapor in inhaled air versus exhaled air?

Answer 18

Inhaled - variable

Exhaled - much higher than inhaled

Question 19

Why does our breathing rate increase when we exercise?

Answer 19

When we exercise our cells need more energy. As a result, the rate of respiration increases. This causes us to breathe faster in order to allow for the increase in gas exchange

Question 20

There is more carbon dioxide in the air we a) breathe in or b) breathe out

Answer 20

b) breathe out

Question 21

What are the effects of smoking?

Answer 21

• Clogs hairs in the nose
• Increases mucous in breathing system
• Increases risk of lung infections and cancer
• Increases risk of heart attacks
• Damages the growth of a baby in the womb