Respiration

Question 1

What is the chemical equation for aerobic respiration?

Answer 1

C6H12O6 + 6O2 —–> 6CO2 + 6H2O

Question 2

What is the word equation for aerobic respiration?

Answer 2

Glucose + Oxygen —–> Carbon Dioxide + Water

Question 3

What is cell respiration?

Answer 3

The process of breaking down food molecules to release ATP

Question 4

Why does aerobic respiration release a lot of ATP?

Answer 4

Completely oxidises the glucose

Question 5

What is the word equation for anaerobic respiration in plants?

Answer 5

Glucose —–> Ethanol + Carbon Dioxide

Question 6

Why is less ATP given off in anaerobic respiration?

Answer 6

• Glucose is not completely broken down
• Less ATP = Less energy

Question 7

What is energy used for?

Answer 7

• Cell division
• Transporting molecules
• Building large molecules
• Contraction of muscles cells (producing movement)
• Maintaining body temperature

Question 8

What is the word equation for anaerobic respiration in animals?

Answer 8

Glucose —–> Lactic Acid

Question 9

What is an oxygen debt?

Answer 9

The volume of oxygen needed to oxidise the lactic acid

Question 10

Define aerobic respiration

Answer 10

Uses oxygen to break down glucose and release energy

Question 11

What happens when lactic acid builds up in muscles?

Answer 11

• Causes cramps
• Lactic acid diffuses into the blood (high concentrations of lactic acid is toxic and is oxidised in there liver)

Question 12

What experiment shows that only living things respire?

Answer 12

Hydrogen carbonate indicator and insects:
- Two test tubes with one insect in one and nothing in another, both with indicator
- Hydrogen carbonate indicator is yellow, but turns red when carbon dioxide concentration increases