alleryStart learning →Where is DNA found in a eukaryotic cell?
AIn the nucleus and in chloroplasts and mitochondria
BIn the nucleus alone and in no other compartment
CIn the cytoplasm, freely, without any envelope at all
DIn the ribosomes and in the endoplasmic reticulum
Answer & Solution
Correct answer: A. In the nucleus and in chloroplasts and mitochondria
1. DNA is the genetic material in all living organisms, from single celled bacteria to multicellular mammals.
2. In eukaryotes it is found in the nucleus.
3. It is also found in the organelles, namely chloroplasts and mitochondria.
4. In prokaryotes the DNA is not enclosed in a membranous envelope, which is the contrast being drawn.
5. Ribosomes are the site of protein synthesis and hold rRNA, not the cell's DNA.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 3 "Biological Macromolecules", section 3.5 Nucleic Acids_
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