Question

the diagram represents a series of reactions that occur in organisms.
what relationship is best represented?
antigens and immunity
substrates and enzyme
carrier proteins and active transport
mrna and ribosomes

Explanation:

The diagram shows a catalyst (enzyme) interacting with original molecules (substrates) to form a final molecule. Enzymes act as catalysts, binding to substrates, facilitating reactions, and remaining unchanged (reusable), matching the “substrates and enzyme” relationship. Antigens - immunity involves immune responses (not direct molecular reactions as shown), carrier proteins - active transport relates to molecule movement (not catalytic reactions), and mRNA - ribosomes involve protein synthesis (ribosomes don’t act as catalysts in the same substrate - enzyme binding way).

Answer:

B. substrates and enzyme