Which is the purpose of transfer rna?
a. to code for protein synthesis
b. to carry the synthesized genetic information from the nucleus to the ribosomes
c. to synthesize proteins from rna
d. to bring amino acids to the ribosomes to be assembled into proteins

a. to code for protein synthesis

RNA, also known as Ribonucleic acid, is the molecule that is used when coding and decoding genetic information. It similar to DNA and is assembled as a chain of nucleotides. An error in the coding of RNA can lead to the mutation of the genetic information or DNA. This means that the protein will not function as it should and lead to genetic defects in a species. Probably the best example of this is Down's Syndrome. This occurs in humans when there is an extra chromosome in the DNA.

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.

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