Which of the Following Statements is TRUE

Question

Which of the following statements is TRUE?
A)DNA codes for the cell nucleic acids.
B)Proteins are assembled from a DNA template.
C)DNA directs the synthesis of amino acids.
D)Messenger RNA carries amino acids to the transfer RNA template.
E)There are four different types of RNA.

Accepted Answer

Proteins are assembled from a DNA template through the process of transcription and translation. DNA serves as the template for the synthesis of messenger RNA (mRNA), which then carries the genetic information to the ribosomes for the synthesis of proteins. Therefore, option B is the correct statement. Option A is incorrect because DNA itself is a nucleic acid, and it does not code for its own synthesis. Option C is incorrect because DNA does not direct the synthesis of amino acids directly but rather through mRNA, which carries the genetic information to the ribosomes for the synthesis of proteins. Option D is incorrect because messenger RNA carries the genetic information from DNA to the ribosomes, and transfer RNA (tRNA) brings the amino acids to the ribosomes for the assembly of proteins. Option E is incorrect because there are three main types of RNA: messenger RNA, ribosomal RNA, and transfer RNA.