Question 38 1 out of 1 pointsCatechol oxidase has _________ as a cofactor. Selected Answer:a. copper ion Answers: a. copper ion b. chloride ionc. silver ion d. iron ion
Question 39 1 out of 1 pointsPotato extract is the source of the _________.
Question 40 1 out of 1 pointsThe color scale in the test tubes is a standard which measures: