Question

question 1-7
which of these statements describe the roles of dna and rna in protein synthesis?
rna constitutes genes with sequences that code for specific proteins.
rna helps in the translation of specific dna sequences into proteins.
dna contains information for sequences of amino acids in proteins.
dna sequences function as templates for mrna during transcription.

Explanation:

1. Genes are made of DNA, not RNA. So the statement "RNA constitutes genes with sequences that code for specific proteins" is incorrect.
2. During protein - synthesis, RNA (specifically tRNA and rRNA along with mRNA) helps in translating the genetic information from DNA into proteins. So "RNA helps in the translation of specific DNA sequences into proteins" is correct.
3. DNA contains the genetic code which determines the sequence of amino acids in proteins. So "DNA contains information for sequences of amino acids in proteins" is correct.
4. During transcription, DNA sequences act as templates for the synthesis of mRNA. So "DNA sequences function as templates for mRNA during transcription" is correct.

Answer:

B. RNA helps in the translation of specific DNA sequences into proteins
C. DNA contains information for sequences of amino acids in proteins
D. DNA sequences function as templates for mRNA during transcription