AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Brings the amino acids to the ribosome
A
mRNA
B
tRNA
C
rRNA
D
DNA
Explanation: 

Detailed explanation-1: -Each tRNA molecule has two distinct ends, one of which binds to a specific amino acid, and the other which binds to the corresponding mRNA codon. During translation, these tRNAs carry amino acids to the ribosome and join with their complementary codons.

Detailed explanation-2: -tRNAs (transfer RNAs) carry amino acids to the ribosome. They act as “bridges, ” matching a codon in an mRNA with the amino acid it codes for.

Detailed explanation-3: -During protein synthesis, tRNAs with attached amino acids are delivered to the ribosome by proteins called elongation factors, which aid in association of the tRNA with the ribosome, synthesis of the new polypeptide, and translocation (movement) of the ribosome along the mRNA.

Detailed explanation-4: -transfer RNA (tRNA), small molecule in cells that carries amino acids to organelles called ribosomes, where they are linked into proteins.

Detailed explanation-5: -tRNA Synthetases Transfer RNA (tRNA) synthetases are enzymes that attach a specific amino acid to its corresponding tRNA for protein biosynthesis at the ribosome. Organisms use up to 20 tRNA synthetases to generate aminoacyl-tRNAs, one for each of the 20 standard amino acids.

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