Evaluate Claims A student claims that the four types of macromolecules make up all of the important compounds of the human body. Provide evidence and reasoning to support or refute this claim.

Identify the terms using the following picture. principle of dominance item 1 can be described as the . item 2 can be described as the . the "p" represents from one parent.

Which tool could you see a plant cell? a. a filter b. a microscope c. a microwave d. an electromagnet

Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit. there is a precise compatibility between the active site and the lactose molecule. specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed. reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.