Enzymes

A chemical reaction is _____.

• the amount of energy needed

• the breaking and creating of bonds

• the amount of energy released

• singular atoms

Activation energy is _____.

• the amount of energy needed to start a chemical reaction

• the breaking and creating of bonds

• the amount of energy needed to stop a chemical reaction

Substances that change in a reaction are _____.

• products

• reactants

Another name for reactants is _____.

• products

• substrates

Substances that are made in a chemical reaction are _____.

• products

• reactants

Which reactions absorb energy?

• exothermic

• endothermic

Which reactions release energy?

• exothermic

• endothermic

Enzymes are a type of _____.

• nucleic acid

• lipid

• protein

• carbohydrate

Enzymes speed up chemical reactions by lowering activation energy.

• true

• false

What speeds up chemical reactions?

• substrates

• catalysts

• products

• reactants