Anaerobic Respiration

Question 1

When does anaerobic respiration happen?

Answer 1

When there is no oxygen.

Question 2

What are the characteristics of anaerobic respiration?

Answer 2

1. Not as efficient as aerobic respiration because glucose molecules are not completely broken down.
2. End product is lactic acid which is poisonous.
3. Glucose = Lactic acid + Energy

Question 3

Why do we have muscle fatigue?

Answer 3

The build up of lactic acid in the muscle. This creates an oxygen debt (Amount of oxygen needed to remove lactic acid.)

Question 4

Why do some people last longer during exercise?

Answer 4

1. In a ft person the heart and lungs will have a good supply of oxygen for a good while.
2. In a less fit individual their muscles will run short of oxygen much quicker compared to a fit person.

Question 5

How is anaerobic respiration in other organisms?

Answer 5

1.When plants perform anaerobic respiration they form ethanol + CO2.
2. Anaerobic respiration in yeast cells is called fermentation.
3. glucose + ethanol + CO2