Respiration

Question 1

What does ATP provide?

Answer 1

Energy for cells

Question 2

Aerobic respiration

Answer 2

• Uses oxygen
• Fully breaks down glucose
• Releases more energy

Question 3

Anaerobic respiration

Answer 3

• Without using oxygen
• Glucose is not completely broken down
• Releases less energy

Question 4

Glucose + Oxygen

Answer 4

Carbon dioxide + Water (+energy)

Question 5

Anaerobic respiration in plants

Answer 5

Glucose -> Ethanol + Carbon dioxide (+energy)

Question 6

Anaerobic respiration in animals

Answer 6

Glucose -> Lactic acid (+energy)

Question 7

Investigating the production of carbon dioxide in living organisms

Answer 7

1. Set up the apparatus as shown
2. Use a stopwatch to measure the time taken for the indicator to change colour
3. Repeat and average
4. Repeat using different organisms and one without for a control

Question 8

Investigating the production of heat by living organisms

Answer 8

1. Soak some peas in water for 24 hours so that they start to germinate
2. A second batch of peas is boiled to kill them
3. Both batches are washed in a 1% bleach solution to kill off any bacteria
4. Rinse them twice with distilled water to remove any bleach
5. Set up the apparatus as shown
6. Measure the starting temperature, then leave for a couple days
7. Measure the final temperature