Question

Which of the statement(s) is (are) not right __________. a. mRNA: contains protein-building instruction b. tRNA: deliver free amino acids to ribosomes c. rRNA: a major component of ribosomes d. tRNA: deliver free nucleotides to ribosomes.

Answer 1

Hi there!

We can go through the overall function of all three of these:

mRNA: transcribed from the DNA, has the protein's composition written in it, and brings that to a ribosome where the protein will be made

tRNA: looks at the codons (set of 3 nucleotides) on the mRNA and brings amino acids which match up to that codon

rRNA: significant part of the composition of ribosomes

Now, looking at these, and back to the answer choices, we can already see that a, b, and c are correct. d, on the other hand, is incorrect.

Hope this helps! Feel free to let me know if you have any questions about this specific problem.