Multiple Choice
Which RNA molecules make up part of the ribosome and play a structural and catalytic role in translation?
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5. DNA to RNA to Protein
tRNA, rRNA and the Codon Code
Multiple Choice
In the context of tRNA, rRNA, and the codon code, what macromolecules primarily make up the ribosome?
A
tRNA and mRNA
B
rRNA and ribosomal proteins
C
Phospholipids and cholesterol
D
DNA and histone proteins
Verified step by step guidance1
Understand that ribosomes are cellular structures responsible for protein synthesis, and they are composed of both RNA and protein components.
Recall that the main types of RNA involved in translation are tRNA (transfer RNA), mRNA (messenger RNA), and rRNA (ribosomal RNA). Among these, rRNA is a structural and functional component of ribosomes.
Recognize that ribosomes are made up of ribosomal RNA (rRNA) molecules combined with ribosomal proteins, which together form the large and small subunits of the ribosome.
Note that tRNA and mRNA play roles in translation but are not structural components of the ribosome itself; tRNA brings amino acids, and mRNA provides the codon sequence.
Conclude that the macromolecules primarily making up the ribosome are rRNA and ribosomal proteins, distinguishing them from other options like phospholipids, cholesterol, DNA, or histones.
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