Question

which of the following statements is true?
a mrna is part of the ribosome.
b trna transfers the ribosome to the cytoplasm.
c mrna is made in the nucleus.
d rrna relays amino acids to the ribosome.

Explanation:

• Option a: rRNA (ribosomal RNA), not mRNA (messenger RNA), is part of the ribosome. Ribosomes are composed of rRNA and proteins.
• Option b: tRNA (transfer RNA) is involved in transferring amino acids to the ribosome during protein synthesis, not transferring the ribosome to the cytoplasm.
• Option c: mRNA is synthesized in the nucleus through the process of transcription. DNA in the nucleus serves as a template for mRNA production.
• Option d: tRNA relays amino acids to the ribosome, not rRNA. rRNA is a structural and functional component of the ribosome.

Answer:

C. mRNA is made in the nucleus.