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24/09/2020 12:53 pm
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Which one of the following pairs is correctly matched with regard to the codon and the amino acid coded by it?
(a) UUA-valine
(b) AM-lysine
(c) AUG-cysteine
(d) CCC-alanine
1 Answer
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24/09/2020 12:54 pm
(a) UUA-valine
Explanation:
Valine is one of 20 proteogenic amino acids. Its codons are GUU, GUC, GUA, and GUG. Cysteine codons are UGU and UGC. With a thiol side chain, cysteine is classified as a hydrophilic amino acid. Alanine codons are GCU, GCC, GCA, and GCG. It is classified as a non-polar amino acid. L-alanine is second only to leucine. Lysine codons are AAA and AAG. Lysine is a base, as are arginine and histidine.