True regarding cytoplasmic m RNA?: (A) It is chiefly translated from nuclear DNA, (B) The sugar is deoxyribose, (C) Thymine is present in place of uracil, (D) Its MW is greater than heterogenous RNA
Answer is A. mRNA is chiefly transcribed from nuclear DNA
MW of cytoplasmic mRNA is lesser than the heterogenous RNA .
mRNA contain only uracil not the thymine .
Sugar is ribose moiety, not the deoxyribose moiety . Messenger RNA (mRNA) is a molecule of RNA that encodes a chemical "blueprint" for a protein product. mRNA is transcribed from a DNAtemplate, and carries coding information to the sites of protein synthesis, the ribosomes. In the ribosomes, the mRNA is translated into a polymer of amino acids: a protein. (This process is sometimes referred to as the central dogma of molecular biology.) Heterogeneous nuclear RNA (hnRNA) a diverse group of long primary transcripts formed in the eukaryotic nucleus, many of which will be processed to mRNA molecules by splicing.