Chapter 17, Problem 5
Which component is not directly involved in translation? a. GTP b. DNA c. tRNA d. ribosomes
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The anticodon of a particular tRNA molecule is a. complementary to the corresponding mRNA codon. b. complementary to the corresponding triplet in rRNA. c. the part of tRNA that bonds to a specific amino acid. d. catalytic, making the tRNA a ribozyme.
Using Figure 17.6, identify a 5′→3′ sequence of nucleotides in the DNA template strand for an mRNA coding for the polypeptide sequence Phe-Pro-Lys. a. 5′-UUUCCCAAA-3′ b. 5′-GAACCCCTT-3′ c. 5′-CTTCGGGAA-3′ d. 5′-AAACCCUUU-3′
Which of the following mutations would be most likely to have a harmful effect on an organism? a. a deletion of three nucleotides near the middle of a gene b. a single nucleotide deletion in the middle of an intron c. a single nucleotide deletion near the end of the coding sequence d. a single nucleotide insertion downstream of, and close to, the start of the coding sequence
Would the coupling of the processes shown in Figure 17.24 be found in a eukaryotic cell? Explain why or why not.