Biosynthesis of many molecules in cells, and many modifications of macromolecules like proteins, rna, and dna require addition of single carbons. what is/are the major carrier/s of single carbons in cells?

a) s-adenosylmethionine
b) acetyl coa
c) tetrahydrofolate
d) a and b
e) a and c

The correct answer is option e) "a and c".

Explanation:

Single carbons are atoms needed for the biosynthesis of many molecules in cells, therefore the cells need a pathway to move group of atoms containing single carbons to make them available for the biosynthesis. S-adenosylmethionine and Tetrahydrofolate are two of the major carriers of single carbons in cells. S-adenosylmethionine (SAM) acts as a methyl (-CH3) donor and Tetrahydrofolate (THF) as a cofactor in enzymatic reactions.

100 dollars because yeah

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation: