Question

The three forms of RNA differ in that a)rRNA is not transcribed from DNA b) all...

The three forms of RNA differ in that

a)rRNA is not transcribed from DNA

b) all tRNAs are identical

c) only mRNA is translated

d) both rRNA and tRNA are structural components of ribosomes, but mRNA is not

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Answer #1

ANSWER-

1) rRNA are transcribed by dna and then attach with the ribosomal proteins to form small subunits called as rRNA, it is the physical and mechanical processor of ribosome that forces trna and mrna to process and translate proteins

2)NO, all tRNA are not identical, infect there are various trna molecules for differnt amino acids and have complementary anti codon region to bind with the codon region.

3)only mrna is translated as it have codons in it and signal receptors which binds to the trna molecules and result into release of proteins.

4)as rRNA and tRNA are responsible for the conversion of mRNA into protein structure, they are supposed to be attach with the ribosome for translation of mRNA, therefore, mrna is not attached , but the rest are attached to the ribosome

hence, option 2 is incorrect, the rest are correct

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