Question

The enzyme that is not present in succus entericus is

• A. nucleosidase
• B. lipase
• C. maltase
• D. nuclease.

Answer 1

The Correct Option is D

The question asks which enzyme is not present in succus entericus. Succus entericus, also known as intestinal juice, contains various enzymes that aid in the digestion of food in the small intestine. Let us analyze the options one by one:

1. Nucleosidase: This enzyme is present in succus entericus and helps in the breakdown of nucleotides into nucleosides, contributing to the digestion of nucleic acids.
2. Lipase: This enzyme is also part of intestinal juice and aids in the digestion of fats by breaking them down into fatty acids and glycerol.
3. Maltase: Present in succus entericus, maltase converts disaccharide maltose into glucose, which is easily absorbed by the body.
4. Nuclease: This enzyme breaks down nucleic acids (DNA and RNA) into nucleotides. However, nuclease is typically secreted by the pancreas into the small intestine and is not part of succus entericus itself.

From the analysis above, it is evident that the enzyme nuclease is not present in succus entericus. Instead, it is produced by the pancreas.

Therefore, the correct answer is:

Nuclease