Which macromolecules have a basic unit that is composed of phosphate, a sugar ring and one of five difirent bases Carbohydrates
Lipids
Proteins
Nuclei acids

Nucleic acids

Explanation:

Nucleic acids are the macromolecule made of a phosphate, sugar ring, and a nitrogen base.

These three components are the major parts of the nucleic acid.

Nucleic acids can differ in the type of nitrogenous bases that they have, because DNA and RNA have different bases.

However, all nucleic acids have a basic unit that is made up of a phosphate group, sugar ring, and nitrogen base.

So, the correct answer is Nucleic acids.

step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.