Question

Which among the following is not a prokaryote?

• A. Nostoc
• B. Oscillatoria
• C. Saccharomyces
• D. Mycobacterium

Answer 1

The correct option is C

Saccharomyces

The correct option is C.

Explanation of the correct option:

1. Prokaryotic organisms are primitive types of organisms that do not contain well-developed nuclei or membrane-bound cell organelles.
2. Saccharomyces is a genus of yeast.
3. It is a multicellular fungus with a well-developed cell structure.
4. Hence it is a eukaryotic organism.

Explanation of the incorrect options:

Option A:

1. Nostoc is a simple living Cyanobacteria that does not contain a developed nucleus or cell organelles.
2. It is a prokaryote.

Option B:

1. Oscillatoria is also a Cyanobacteria, not having developed nucleus or membrane-bound cell organelles.
2. It is a prokaryote.

Option D:

1. Mycobacterium is a Gram-positive, pathogenic bacteria that are primitive.
2. It is a prokaryote.

Final answer: saccharomyces are not a Prokaryote.