Enzymes
100

A substance that acts as a catalyst in living organisms, regulating the rate at which chemical reactions proceed without itself being altered in the process

What is an enzyme?

200

A substance that can affect the rate of a chemical reaction without itself being changed or used up. 

What is a catalyst?
300

The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.

What is photosynthesis?

400

A model for enzyme-substrate interaction suggesting that the enzyme and the substrate possess specific complementary geometric shapes that fit exactly into one another

What is lock and Key diagram?

500

The structure of an enzyme can be changed by these factors.

What is PH and Tempature?