Which one of the following processes in the bodies of living organisms is a digestive process?

1. Breakdown of proteins into amino acids
2. Breakdown of glucose into CO₂ and H₂O
3. Conversion of glucose into glycogen
4. Conversion of amino acids into proteins

Explanation

Option (a) is correct

• Digestion involves breaking complex food substances into simpler, absorbable forms. Protein digestion involves converting proteins into amino acids through enzymes such as pepsin and trypsin.

Answer: (a) Breakdown of proteins into amino acids