A mutant bacterial cell has a defective enzyme that attaches a lysine to tRNAs with the anticodon AAA instead of phenylalanine. The concequence of this for the cell is that
a. none of the proteins in the cell will contain phenylalanine
b. proteins in the cell will include lysine instead of phenylalanine at amino acid positions specified by the codon UUU
c. the cell will compensate for the defect by attaching phenylalanine to tRNAs with lysine-specifying anticodons
d. the ribosome will skip a codon every time a UUU is encountered
e. none of the above; the cell will recognize the error.

Question

A mutant bacterial cell has a defective enzyme that attaches a lysine to tRNAs with the anticodon AAA instead of phenylalanine. The concequence of this for the cell is that 
a. none of the proteins in the cell will contain phenylalanine
b. proteins in the cell will include lysine instead of phenylalanine at amino acid positions specified by the codon UUU
c. the cell will compensate for the defect by attaching phenylalanine to tRNAs with lysine-specifying anticodons
d. the ribosome will skip a codon every time a UUU is encountered 
e. none of the above; the cell will recognize the error.

aaronq · Answer

b. proteins in the cell will include lysine instead of phenylalanine at amino acid positions specified by the codon UUU

aaronq · Answer

the codon is complementary to the $anti$codon

anonymous · Answer

Yep, I agree with @aaronq