Enzymes

Enzymes are an example of

• lipids

• carbohydrates

• protein

• nucleic acid

What is a substance called if it speeds up a chemical reaction?

• reusable

• catalyst

• specific

• fragile

Each enzyme only has 1 substrate that will fit its active site.  What is this called?

• reusable

• catalyst

• fragile

• specific

In the diagram, what is letter A?

• product

• enzyme-substrate complex

• substrate

• active site

Letter D...

• enzyme

• active site

• substrate

• products

Letter B...

• substrate

• active site

• enzyme

• products

Letter C...

• products

• substrate

• enzymes

• active site

Letter E...

• active site

• products

• substrate

• enzyme

An enzyme speeds up a reaction by

• raising the activation energy

• lowering the activation energy

• releasing energy

• absorbing energy.

What happens when enzymes are heated to a high temperature?

• The shape of the enzyme are changed and it denatures

• The enzymes die

• The enzymes' amino acid sequence changes

• The enzymes remain the same