Multiple Choice
Which of the following is not a property of RNA?
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4. DNA, Chromosomes, and Genomes
DNA vs. RNA
Multiple Choice
In eukaryotic cells, where can RNA be found?
A
Only in the nucleus, because it cannot leave through nuclear pores
B
Only in the cytoplasm, because it is not synthesized in the nucleus
C
In the nucleus and in the cytoplasm (including on ribosomes)
D
Only in mitochondria and chloroplasts, because RNA is absent from the nucleus
Verified step by step guidance1
Understand that RNA (ribonucleic acid) is synthesized in the nucleus of eukaryotic cells through a process called transcription, where DNA is used as a template to make RNA.
Recognize that after synthesis, RNA molecules such as messenger RNA (mRNA) exit the nucleus through nuclear pores to reach the cytoplasm, where they participate in protein synthesis.
Note that ribosomal RNA (rRNA) and transfer RNA (tRNA) are also found in the cytoplasm, with rRNA being a key component of ribosomes, the cellular machinery for protein synthesis.
Remember that some RNA is also present in organelles like mitochondria and chloroplasts, which have their own DNA and RNA, but the majority of RNA is found both in the nucleus and cytoplasm.
Conclude that RNA is located in both the nucleus (where it is made) and the cytoplasm (where it functions), including on ribosomes, making the correct answer: 'In the nucleus and in the cytoplasm (including on ribosomes)'.
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