AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the importance of anticodons on tRNA molecules?
A
Anticodons provide a complementary sequence of nucleotides to direct the tRNA where to deliver the amino acids.
B
Anticodons code for a specific amino acid.
C
Anticodons are the same exact sequence nucleotides as DNA.
D
Anticodons control the peptide bonding between amino acids.
Explanation: 

Detailed explanation-1: -The anticodon enables the tRNA to recognize the codon through complementary base pairing. The events in protein synthesis are catalyzed on the ribosome, which consists of two subunits; each subunit consists of several proteins associated with a long RNA (rRNA).

Detailed explanation-2: -The function of anticodons is to bring together the correct amino acids to create a protein, based on the instructions carried in mRNA. Each tRNA carries one amino acid, and has one anticodon.

Detailed explanation-3: -mRNA codons and tRNA anticodons are complementary to each other. Codons in the mRNA bind to the anticodons in the tRNA during protein synthesis (translation). This relationship ensures the correct the amino acids are added to the growing polypeptide chain.

Detailed explanation-4: -anticodon – a sequence of three nucleotides on a tRNA molecule that bond to a complementary sequence on an mRNA molecule. The anticodon sequence determines the amino acid that the tRNA carries. DNA-the molecule that stores and encodes an organism’s genetic information.

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