Your teacher gives you this model of transcription. Choose the statement that best describes the role of DNA in transcription.

C

Explanation:

A)

DNA directs the synthesis of RNA.

B)

DNA splits into two strands of RNA.

C)

A strand of DNA is used as a template for the formation of RNA.

D)

Two strands of RNA are formed by copying each of the strands of DNA.

The correct answer would be that a strand of DNA is used as a template for the formation of RNA.

Transcription is a process during which RNA is synthesized using DNA as a template. The coding strand of the DNA is utilized as a template for the formation of messenger RNA. During this process, the double helix structure of the DNA is unwound by an enzyme and the coding strand is bound by a short DNA strand at the beginning of a gene while another enzyme adds RNA nucleotide bases to elongate the short strand.

The correct option is C.

answer: carbon 14 can only be used to determine the age of the organisms that were once living, and igneous rocks are non living.

explanation:

carbon 14 dating is used to determine the age of the sample by estimating the amount of carbon 14 present in the sample and then comparing it with a reference standard.carbon 14 is a isotope of carbon which is radioactive and unstable. carbon 14 is assimilated by all plants and animals throughout their life from carbon dioxide. however, one the organisms die they stop this assimilation and the carbon 14 content starts to decrease.by knowing how much of carbon 14 is left in an organism after his death, one can estimate the age of the organism. the materials whose age can be estimated by carbon 14 method are the organic compounds. however, some inorganic compounds such as aragonite   shell can also be dated.however, if we consider the igneous rocks it is a non living component which never accumulated carbon 14 in it and thus, we cannot use carbon 14 dating method to estimate its age.

Both prokaryotic and eukaryotic cells have ribosomes and cell membranes