AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
At one time, how many amino acids are connect to a molecule of tRNA?
A
2
B
3
C
1
D
tRNA doesn’t hold amino acids
Explanation: 

Detailed explanation-1: -This chain of two amino acids will be attached to the tRNA in the A site. The ribosome will then move along the mRNA template by one codon.

Detailed explanation-2: -Answer and Explanation: tRNAs have one amino acid attached per molecule.

Detailed explanation-3: -Motivation: The standard genetic code translates 61 codons into 20 amino acids using fewer than 61 transfer RNAs (tRNAs).

Detailed explanation-4: -Amino acids are attached to the tRNA 3′-end as a prerequisite for entering the ribosome for protein synthesis. Amino acid attachment also gives tRNA access to nonribosomal cellular activities.

Detailed explanation-5: -Each tRNA is designed to carry a specific amino acid that it can add to a polypeptide chain. tRNAs bring their amino acids to the mRNA in a specific order.

There is 1 question to complete.