AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The “bottom loop” of transfer RNA.
A
The codon
B
The promotor
C
The anticodon
Explanation: 

Detailed explanation-1: -Anticodon Loop It has a 5 base pair long stem. It has an anticodon loop, which contains the complementary codon (3 nucleotides sequence) present on mRNA for the amino acid it carries. These unpaired bases of anticodon loop pair with the mRNA codon. Each codon is identified by a specific tRNA.

Detailed explanation-2: -At one end, the tRNA has an anticodon of 3’-UAC-5’, and it binds to a codon in an mRNA that has a sequence of 5’-AUG-3’ through complementary base pairing. The other end of the tRNA carries the amino acid methionine (Met), which is the the amino acid specified by the mRNA codon AUG.

There is 1 question to complete.