Distinguish between the following: (a) Aerobic respiration and Anaerobic respiration (b) Glycolysis and Fermentation (c) Glycolysis and Citric acid Cycle | NCERT solution | Class 11 Biology | Unit-14 Respiration in Plants



Q.7:- Distinguish between the following:
(a) Aerobic respiration and Anaerobic respiration
(b) Glycolysis and Fermentation
(c) Glycolysis and Citric acid Cycle

 

Answer:- 

(a) Aerobic respiration and Anaerobic respiration

Aerobic respiration
Anaerobic respiration
It takes place in the presence of oxygen. It takes place in the absence of oxygen.
It occurs in cytoplasm and mitochondria. It occurs in cytoplasm
The end products of aerobic respiration are carbon dioxide and water. The end products of fermentation are ethyl alcohol and carbon-dioxide.
Complete oxidation of respiratory substrate takes place. Incomplete oxidation of respiratory substrate takes place.
36-38 ATP molecules are produced. Only 2 ATP molecules are produced.

OR

Aerobic respiration needs oxygen, while anaerobic respiration does not need oxygen. There is complete oxidation of glucose in aerobic respiration, while it is incomplete in anaerobic respiration. Lactic acid and ethanol are the main products of anaerobic respiration, while carbon dioxide is the end product of aerobic respiration.

(b) Glycolysis and Fermentation



Glycolysis
Fermentation
Glycolysis occurs during aerobic and anaerobic respiration. Fermentation is a type of anaerobic respiration.
The end products of aerobic respiration is pyruvic acid The end products of aerobic respiration is ethanol or lactic acid

OR

Breakdown of glucose into pyruvic acid is called glycolysis, while further processing of pyruvic acid in anaerobes is called fermentation.

(c) Glycolysis and Citric acid Cycle

Glycolysis
Citric acid Cycle
It is a linear pathway. It is a cyclic pathway.
It occurs in the cell cytoplasm. It occurs in the mitochondrial matrix.
It occurs in all living beings. It occurs in aerobic respiration.
It generates 2 NADH2 and 2 ATP molecules on the breakdown of one glucose molecule. It generates 6 NADH2, 2 FADH2, and 2 ATP molecules on the breakdown of two acetyl-CoA molecules.

OR

Breakdown of glucose into pyruvic acid is called glycolysis, while further processing of pyruvic acid through aerobic route is called Citric acid cycle. Glycolysis happens in all living beings, while Citric acid cycle happens in aerobes only. Glycolysis happens in cytoplasm, while Citric acid cycle happens in mitochondria.