Removal of hydrogen and `CO_(2)` from a substrate is called

Removal of water molecule from the substrate is called______

The removal of oxygen from a substance is called

The removal of hydrogen from a compound is called reduction.

The removal of oxygen from a substance is called :

Enzymes, which catalyse the transfer of hydrogen (H) between two substrates, are called :

Removal of hydrogen from a compound is an oxidzing agent.

Assertion :- For complete breakdown of respiratory substrate Krebs cycle is essential. Reason:- Krebs cycle is associated with step wise removal of all the hydrogen and CO_(2) molecules