Carbon dioxide, water and ozone are not organic compounds. In fact, these are compounds from where many organisms get their basic atoms mentioned in the picture (Carbon, Hydrogen, Oxygen and Nitrogen). Carbon dioxide is usually where, for example, plants get their Carbon from.
Carbohydrates are organic compounds and are one of the macronutrients in our diet, next to proteins and fats. DNA is also as organic compound and is the very basis of all the genetic information in living organisms.
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.