What is the name of the model given to the relationship between an enzyme and the substrate(s) it can bind to? jigsaw puzzle
lock and box
peg and hole
lock and key

Variety of living organisms; includes genetic, species, and ecological types.

The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes

What is the difference between a scientific hypotheses and a scientific theory?