Question

Which of the following statements are true for eukaryotic cells?

• A. They do not have a nuclear membrane.
• B. They have a well-organised nucleus.
• C. They have a nuclear membrane.
• D. Blue-green algae are eukaryotic cells

Answer 1

Answer: (B), (C)

They have a nuclear membrane.

The correct options are B and C.

Explanation of the correct option:

Option B:

1. Any cell or creature with a distinct nucleus is said to be a eukaryote.
2. The nucleus of a eukaryotic cell, which houses the well-defined chromosomes (bodies holding the genetic material), is surrounded by a nuclear membrane.
3. The well-organized membrane-bound nucleus found in eukaryotic cells is a characteristic of these cells.
4. In eukaryotic cells, the nuclear membrane that encloses the nucleus gives the structure-defined nucleus, which contains genetic material.

Option C:

1. However, in eukaryotes, the DNA is organized into compact chromosomes that are segregated from the rest of the cell by a nuclear membrane (also called a nuclear envelope).
2. In addition, eukaryotic cells have a number of structures and organelles that prokaryotic cells do not.

Explanation of the incorrect options:

Option A:

1. However, in eukaryotes, the DNA is organized into compact chromosomes that are segregated from the rest of the cell by a nuclear membrane (also called a nuclear envelope).
2. In addition, eukaryotic cells have a number of structures and organelles that prokaryotic cells do not.
3. Eukaryotic cells have a nuclear membrane.
4. This statement is incorrect according to the question.

Option D:

1. Blue-green algae, also known as cyanobacteria, are prokaryotes, meaning that they lack any organelles that are membrane-bound, such as chloroplasts.
2. A phylum of Gram-negative bacteria called Cyanobacteria, also referred to as Cyanophyta, produces energy through photosynthesis.

Final answer: They have a well-organized nucleus and they have a nuclear membrane statements are true for eukaryotic cells.