Question Video: Recalling Where Chromatin is Contained within a Eukaryotic Cell | Nagwa Question Video: Recalling Where Chromatin is Contained within a Eukaryotic Cell | Nagwa

Question Video: Recalling Where Chromatin is Contained within a Eukaryotic Cell Biology • First Year of Secondary School

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Where within a eukaryotic cell is chromatin contained?

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Video Transcript

Where within a eukaryotic cell is chromatin contained? (A) The nucleolus, (B) the ribosome, (C) the nucleoplasm, or (D) the rough endoplasmic reticulum.

Chromatin is a structure that is formed when DNA is compacted to form a chromosome. DNA wraps around proteins called histones and coils up, forming a chromatin fiber. This fiber then further compacts into a chromosome, which has been shown in this replicated form just before cell division in this diagram.

So, where in a eukaryotic cell, like the one shown here on the right of the screen, is chromatin located? Let′s discuss the different answer options and eliminate those that are incorrect. In eukaryotic cells, chromosomes are located inside the nucleus. The ribosome and the rough endoplasmic reticulum are both organelles located outside of the nucleus, within the cytoplasm of the cell. So we can eliminate answers (B) and (D).

Now, let′s discuss answer (A). The nucleolus is a dense portion of the nucleus where ribosomes are formed. Although it is located in the nucleus and there is DNA and RNA in the nucleolus, it is not where chromatin is located. So we can eliminate answer option (A).

The nucleoplasm is the liquid portion of the nucleus. This is where the chromosomes, which contain chromatin, are located. This means that the place within a eukaryotic cell that contains chromatin, and the correct answer to this question, is (C): the nucleoplasm.

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