AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which phrase best describes translation?
A
converts mRNA into amino acid chain(protein)
B
catalyzes bonds between amino acids
C
produces RNA from DNA molecules
D
recycles tRNA molecules for reuse
Explanation: 

Detailed explanation-1: -Expert-Verified Answer. The phrase that best describes the process of translation is that it converts mRNA into a polypeptide.

Detailed explanation-2: -The process of converting the mRNA ‘message’ into a sequence of amino acids is known as translation. The mRNA is decoded during the process of translation in which the ribosomes in the cytoplasm or the endoplasmic reticulum synthesizes the proteins in the cell’s nucleus after the process of transcription of DNA to RNA.

Detailed explanation-3: -Transfer RNAs (tRNAs) Transfer RNAs, or tRNAs, are molecular “bridges” that connect mRNA codons to the amino acids they encode. One end of each tRNA has a sequence of three nucleotides called an anticodon, which can bind to specific mRNA codons. The other end of the tRNA carries the amino acid specified by the codons.

Detailed explanation-4: -During translation, ribosomal subunits assemble together like a sandwich on the strand of mRNA, where they proceed to attract tRNA molecules tethered to amino acids (circles). A long chain of amino acids emerges as the ribosome decodes the mRNA sequence into a polypeptide, or a new protein.

Detailed explanation-5: -The process of syntheis of mRNA carryoing the message of DNA is termed transcription. The process of the synthesis of protein molecule with sequence of amino acids as per the code in mRNA is termed translation .

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