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Question

Which of the following statements are true for eukaryotic cells?


A

They do not have a nuclear membrane.

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B

They have a well-organised nucleus.

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C

They have a nuclear membrane.

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D

Blue-green algae are eukaryotic cells

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Solution

The correct option is 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.


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