Question

Restriction enzymes are isolated chiefly from

• A. Prokaryotes
• B. Protozoa
• C. Algae
• D. Fungi

Answer 1

The correct option is A

Prokaryotes

The correct option is A.

The explanation for the correct option:

1. A restriction enzyme is an enzyme that cleaves DNA into pieces or at specific sites.
2. Restriction enzymes are present in bacteria which are members of the kingdom of Monera.
3. The members of Kingdom Monera are prokaryotic in nature.

The explanation for incorrect options:

Option B:

1. Protozoa comprise all single-celled eukaryotic organisms that lack restriction enzymes.

Option C:

1. Algae are a group of microscopic organisms which are photosynthetic eukaryotes.
2. They do not have restriction enzymes.

Option D:

1. Fungi are a group of saprophytic organisms.
2. They are eukaryotic and also lack restriction enzymes.

Final Answer: Restriction enzymes are isolated chiefly from Prokaryotes.