Question

question 4 of 25 which describes how mrna is used by a cell? a. it is used to move information to other cells. b. it is used to check dna for mutations. c. it is used to transfer genetic information. d. it is used to replicate dna for mitosis.

Explanation:

mRNA (messenger RNA) is synthesized from DNA during transcription. Its main role is to carry the genetic information (the "message" encoded in DNA) from the nucleus (in eukaryotic cells) to the ribosomes in the cytoplasm. At the ribosomes, this genetic information is then used to synthesize proteins during the process of translation.

• Option A is incorrect because mRNA acts within the cell (to carry information from DNA to ribosomes for protein - synthesis), not to move information to other cells.
• Option B is incorrect. DNA repair mechanisms (not mRNA) are mainly responsible for checking DNA for mutations.
• Option D is incorrect. DNA polymerase (along with other enzymes) is responsible for replicating DNA during mitosis, not mRNA.

Answer:

C. It is used to transfer genetic information.