EXAM - Gas Exchange

Question 1

LABEL THE MAIN STRUCTURES OF THE HUMAN GAS EXCHANGE SYSTEM

Answer 1

LABEL THE MAIN STRUCTURES OF THE HUMAN GAS EXCHANGE SYSTEM

Question 2

What are the main differences between gas exchange and respiration

Answer 2

Gas exchange

• Involves the exchange of oxygen and carbon dioxide
• It is necessary to enable respiration to take place
• Occurs in the alveolus

Respiration

• Occurs in ALL Living cells
• It is a series of chemical reactions
• It can happen With or WITHOUT oxygen
• Respiration releases energy

Question 3

LABEL THE BELL JAR MODEL

Answer 3

LABEL THE BELL JAR MODEL

Question 4

Is there more Carbon dioxide in inhaled or exhaled air

Answer 4

Exhaled air contains carbon dioxide

Question 5

What is peak flow

Answer 5

The maximum speed at which someone can exhale

Question 6

What is lung capacity

Answer 6

A measure of the volume of air your lungs can hold

Question 7

What are some factors that may affect breathing rate

Answer 7

Exercise 
Stress
Anxiety
Nerves 
Drugs

Question 8

Why does our rate and depth of breathing increase when we exercise

Answer 8

This is because when we exercise our heart has to work harder to transport blood around the body

Question 9

What is aerobic respiration

Answer 9

A chemical process in which oxygen is used to make energy from carbohydrates

Question 10

What is the word equation for aerobic respiration

Answer 10

Glucose + Oxygen = Water +Carbon Dioxide + Energy

Question 11

Respiration can take place without oxygen this is called what

Answer 11

Anaerobic Respiration

Question 12

Where can anaerobic respiration take place

Answer 12

Muscle

Yeast

Question 13

Anaerobic Respiration releases what

Answer 13

Less energy

Question 14

What are the three main chemicals in a cigarette

Answer 14

Tar
Carbon Monoxide
Nicotine

Question 15

Effects of Tar

Answer 15

Bronchitis
Emphysema
Lung Cancer Disease

Question 16

Effects of Nicotine

Answer 16

Addictive

Increases heart rate

Question 17

Affects of Carbon Monoxide

Answer 17

Combines with haemoglobin to prevent as much oxygen being transported

Question 18

What are the short term effects of cigarette smoking

Answer 18

• Sore irritated eyes and nose and also sore throat
• Headaches
• Feeling Dizzy
• It could make asthma worse

Question 19

Long term effects of cigarette smoke

Answer 19

• It can increase risk of having heart disease

- It can increase risk of lung and other cancers

Question 20

What is passive smoking/second hand smoking

Answer 20

Passive smoking/Second hand smoking is when you inhale the smoke from someone else’s cigarette

Question 21

What are electronic cigarettes

Answer 21

E-cigarettes are small, battery powered devices that hold a liquid cartridge containing

• NICOTINE
• FLAVOURING
• Chemical Called PROPYLENE GLYCOL

Question 22

How do e-cigs work

Answer 22

When the user inhales a small amount of the liquid is heated until it becomes a vapour. People who use e-cigarettes are therefore not smoking but “vaping”

Question 23

What are 2 advantages of e-cigarettes

Answer 23

Less harmful chemicals, reduces cravings, no bad smell, and no fire risk

Question 24

What are 2 disadvantages of e-cigarettes

Answer 24

Still unsure of long term effects

People might use it more than regular smoking. Still bad for health