Used to measure cells & cell structures, = .001 mm

The reaction rate of test tube 1 was 4. 14. ... Amylase is an enzyme that can be used to break down

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.