Scientists are studying compounds in a newly discovered rain forest plant. the plant produces an unusual substance that local people from the area say acts as an anesthetic. if another scientist tests the substance using iodine, which macromolecule is the scientist testing for? a. carbohydrates b. protein c. nucleic acid d. lipid

a. Carbohydrates

Explanation:

Iodine is used to test for carbohydrates, specifically starch. Iodine changes color in the presence of starch from a brown color to a more blue black color. The answer is a bit untrue because other carbohydrates are tested differently but the closest one to the correct one (starch) is carbohydrates, which is one of many carbohydrates