OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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it repairs damaged DNA
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it binds with an unzipped strand of DNA to copy DNA nucleotide sequences
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it transports energy from the mitochondrion to the ribosome so that translation can take place
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it carries amino acids to the ribosome
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Detailed explanation-1: -Transfer RNA (abbreviated tRNA) is a small RNA molecule that plays a key role in protein synthesis. Transfer RNA serves as a link (or adaptor) between the messenger RNA (mRNA) molecule and the growing chain of amino acids that make up a protein.
Detailed explanation-2: -As the mRNA passes through the ribosome, another type of RNA called transfer RNA (tRNA) carries a protein building block called an amino acid to the ribosome. The tRNA carrying the amino acid binds to a matching sequence in the mRNA.
Detailed explanation-3: -Once the tRNA delivers the appropriate amino acid it is released and sent for another round of binding a new amino acid according to the information brought on by mRNA codons.
Detailed explanation-4: -tRNAs encoded by nuclear genomes are transcribed in the nucleus and are then exported to the cytoplasm where they perform their essential function of delivering amino acids to growing polypeptide chains as specified by mRNA codons.