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Assignment 6

Completion requirements
Opened: Wednesday, 8 April 2020, 10:10 PM
Due: Friday, 17 April 2020, 12:10 AM

1. How many bases are needed to specify three amino acids?
            a. 3                                     c. 9
           b . 6                                     d . 1 2
2 . Why is it possible for an amino acid to be specified by more than one kind of codon?
a. Some codons have the same sequence of nucleotides.
b . There are 64 different kinds of codons but only 20 amino acids.
c. Some codons do not specify an amino acid.
d . The codon AUG codes for the amino acid methionine and serves as the “start” codon for protein synthesis.
3 . What happens during the process of translation?
a. Messenger RNA is made from DNA.
b . The cell uses information from messenger RNA to produce proteins.
c. Transfer RNA is made from messenger RNA.
d . Copies of DNA molecules are made.
4 . During translation, the type of amino acid that is added to the growing polypeptide depends on the
a. codon on the mRNA only.
b . anticodon on the mRNA only.
c. anticodon on the tRNA to which the amino acid is attached only.
d . codon on the mRNA and the anticodon on the tRNA to which the amino acid is attached.

5. Translation initiation in E. coli is mediated by basepairing of 16S rRNA to the:

a. promoter

b. origin of replication

c. Shine-Dalgarno sequence

d. transcription start site

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