Problem:
Question 1: The tRNA with UAU as the anticodon would be attached to which amino acid?
a) tryrosine
b) isoleucine
c) leucine
d) serine
Question 2: Which of these is not used in DNA replication?
a) RNA polymerase
b) DNA polymerase
c) Helicase
d) Primer
Question 3: A gene codes for a protein that is 500 amino acids long. Which of the following mutations is likely to be the most deleterious?
a) a missense mutation at the 490th codon
b) a missense mutation at the fifth codon
c) a nonsense mutation at the fifth codon
d) a nonsense mutation at the 490th codon
Please provide correct answer and also explain it.