Year 9 Respiration

Question 1

Where does aerobic and anaerobic happen ?

Answer 1

Mitochondria

Question 2

What’s the chemical equation for aerobic respiration?

Answer 2

C6H1206 + 602 to 6CO2 + 6H20 + ATP

Question 3

What’s the word equation for aerobic respiration?

Answer 3

Glucose + oxygen to carbon dioxide + water + energy

Question 4

What’s the word equation for anaerobic respiration? (Animals)

Answer 4

Glucose -> lactic acid

Question 5

What’s the word equation for anaerobic respiration? (Plants/yeast)

Answer 5

Glucose -> carbon dioxide + ethanol

Question 6

Name 4 differences between aerobic and anaerobic respiration ?

Answer 6

• Aerobic uses oxygen = anaerobic doesn’t
  -Aerobic breaks down all the glucose = anaerobic doesn’t
  -Products
  -Aerobic produces a lot of energy = anaerobic doesn’t

Question 7

Why is there a higher breathing rate ?

Answer 7

More oxygen into the body = more oxygen into body cells = aerobic respiration releases more energy

Question 8

Why’s there a higher heart rate ?

Answer 8

Increase in blood flow = more oxygen and glucose in to body cells for more energy released

Question 9

What are the effects of mild exercise ?

Answer 9

-Breathing rate = supplies the body more oxygen to produce more energy for muscle contractions
-Heart rate = more oxygen and glucose in blood to muscles to produce more energy for muscle contractions

Question 10

What are the effects of vigorous exercise ?

Answer 10

• Not enough oxygen = anaerobic respiration
• Anaerobic release less energy because glucose isn’t completely broken down
• Oxygen debt is created
  -Lactic acid is transported to liver where it goes into glucose

Question 11

What is oxygen debt ?

Answer 11

The amount of oxygen needed to break down lactic acid produced in anaerobic respiration

Question 12

What is respiration ?

Answer 12

An exothermic reaction to produce energy