Question

for 13. Various chemical reactions in body use energy generation. (a) Nitrogen and carbon (b) Oxygen (c) Carbon sources and oxygen (d) None of the above​

Answer 1

B)Oxygen

because oxygen is inhale of human energy generation

Answer 2

Anabolic reactions use energy that is generated in the body whereas catabolic reactions are those reactions that release energy

Explanation

1) Peptide synthesis comes under the Anabolic reaction category because it uses energy to synthesize peptide bonds present between two amino acids. Amino acid is made up of Nitrogen, Carbon, Oxygen, and Hydrogen.

2)Catabolic reactions use body energy to complete the reaction example is when glucose reacts with oxygen to give carbon dioxide and also releases energy. Here elements involved are Carbon, Oxygen, and Hydrogen.

So chemical reactions used to generate energy in the body involves carbon  sources and oxygen

final answer

(C) carbon sources and oxygen