Which among the following is incorrect about RNA?

Which of these is not a primary metabolite?

Which of these is a complex polysaccharide?

Which of these is the third step of an enzymatic reaction?

How many subunits does human hemoglobin contain?

If the formation of carbonic acid is uncatalyzed, how many product molecules are formed every hour?

Which of these components of nucleotides is heterocyclic?

Vinblastine is a _____