The Enzyme-Substrate Complex can be modeled using three steps. What does Step III in the diagram illustrate?

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.

the answer is "a.) well–developed vascular system."

explanation:

oxygen +1 most likely