Question

In which process there is no need of o2 in respiration 1)krebs cycle 2) oxidative phosphorylation 3) glycolysis 4)link reaction?

Answer 1

Answer : The correct answer is glycolysis and link reaction.

EXplanation :

• Glycolysis : It is the first part of respiration which involves breakdown of glucose into two molecules of pyruvate. During this process, ATP and NADH are formed as by-products. This process does not require any oxygen molecule.

• Link reaction : It links glycolysis to kreb cycle (Pyruvate to acetyl CoA) and Carbon dioxide & NADH is released in this reaction. This process does not require any oxygen molecule.

On the contrary Kreb cycle and oxidative phosphorylation requires oxygen molecules.

• Kreb cycle occurs in mitochondria using oxygen and it produces carbon dioxide and water as waste product.

• Oxidative phosphorylation takes place in inner mitochondrial membrane where oxygen molecule used as the final electron acceptor. This process gioves rise to ATP molecule.

Thus, glycolysis and link reaction does not require oxygen molecule.

Answer 2

Answer:

glycolysis

and

link reaction

Explanation: