AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Three consecutive nucleotides in an mRNA molecule that specify an amino acid is a(n)
A
codon
B
anticodon
C
amino acid
D
peptide bond
Explanation: 

Detailed explanation-1: -Each group of three consecutive nucleotides in RNA is called a codon, and each codon specifies either one amino acid or a stop to the translation process.

Detailed explanation-2: -A sequence of three consecutive nucleotides in a DNA or RNA molecule that codes for a specific amino acid. Certain codons signal the start or end of translation. These are called start or stop (or termination) codons.

Detailed explanation-3: -The mRNA bases are grouped into sets of three, called codons. Each codon has a complementary set of bases, called an anticodon.

Detailed explanation-4: -Each three-letter sequence of mRNA nucleotides corresponds to a specific amino acid, or to a stop codon. UGA, UAA, and UAG are stop codons. AUG is the codon for methionine, and is also the start codon.

Detailed explanation-5: -The nucleotide triplet that encodes an amino acid is called a codon. Each group of three nucleotides encodes one amino acid.

There is 1 question to complete.