Question

1. Distinguish between breathing and respiration.
2. Distinguish between aerobic respiration and anaerobic respiration.
3. What are the different pathways in which glucose is broken down to provide energy in various organisms?​

Answer 1

1. breathing

1. it is a physical process

2. it involves inhalation and exhalation of air in and out of lungs

respiration

1. it is a chemical process

2.In this, oxygen is utilized to breakdown glucose in order to generate energy which is later used by the cell for various function.

2. aerobic Respiration

1.Occurs in the presence of oxygen

2.Glucose is completely oxidised

3.carbon dioxide and water are formed as end products.

4.more energy is produced

5.mitochondria are needed

anaerobic respiration

1. Occurs in the absence of oxygen

2. Glucose is oxidised incompletely

3.end products are ethyl alcohol (in plant cells) and carbon dioxide or lactic dioxide in animal cells

4.very little energy is produced.

5.mitochondria are not needed