Enzyme for Protein to Peptide Conversion Identified
The question asks to identify the enzyme responsible for converting proteins into peptides. This process is a crucial part of protein digestion.
Role of Pepsin in Protein Digestion
Pepsin is a digestive enzyme. It is secreted in the stomach and plays a primary role in breaking down proteins. Specifically, pepsin breaks large protein molecules into smaller chains of amino acids, called peptides. This action is achieved through hydrolysis, breaking peptide bonds within the protein structure.
The reaction can be broadly represented as:
Protein + Water --(Pepsin)--> Peptides
Analysis of Other Enzyme Options
The other options provided are enzymes with different functions:
- Lactase: This enzyme breaks down lactose (milk sugar) into glucose and galactose. It is not involved in protein digestion.
- Zymase: This is a complex of enzymes found in yeast, primarily responsible for the fermentation of sugars into ethanol and carbon dioxide. It does not act on proteins.
- Invertase: Also known as sucrase, this enzyme hydrolyzes sucrose (table sugar) into glucose and fructose. It is involved in carbohydrate digestion, not protein.
Therefore, pepsin is the correct enzyme for the conversion of proteins into peptides.
Final Answer Determination
Based on the functions described, pepsin is the only enzyme listed that catalyzes the conversion of proteins into peptides.
Correct Option: A. Pepsin
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