Question

Read the following statements and identify the correct option given

I. In the prokaryotic cell, the nuclear membrane, chloroplast, mitochondria, microtubules, and different kinds of pili are absent.

II. In eukaryotic cells, the nuclear membrane, chloroplast, mitochondria, and pili are present.

III. In prokaryotic cells, the ribosome is of 70S type and in mitochondria of the eukaryotic cells, the ribosome is of 80S type.

• A. I and II are wrong, III is correct
• B. I is correct, II and III are wrong
• C. I and II are correct, III is wrong
• D. I and II and III are wrong

Answer 1

The correct option is D

I and II and III are wrong

The correct option is D:

Explanation of the correct option:

Statement I:

1. Prokaryotic cells do not have a membrane-bound nucleus.
2. It means that they do not have a true nucleus.
3. Prokaryotes do not have membrane-bound cell organelles within their cytoplasm.
4. So, the statement I is wrong.

Statement II:

1. Eukaryotes have a true nucleus and membrane-bound cell organelles.
2. But pili is absent in eukaryotic cells.
3. So, statement II is wrong.

Statement III:

1. In prokaryotes, ribosomes are of 70S type.
2. In eukaryotes, ribosomes are of 80S type.
3. But in the mitochondria of eukaryotic cells, ribosomes are of 70S type, not 80S.
4. So, the statement III is wrong.

Final answer: I and II, and III all statements are wrong.