Enzymes

what is pH ?

Measure of hydrogen ion concentration

Enzyme

A type of protein that speeds up a chemical reaction in a living thing

What is endothermic?

Energy is absorbed

What is exothermic?

Energy is released

Which are two types of enzyme activity

Exothermic and endothermic

True or False: Enzymes start chemical reactions.

FALSE. Enzymes don't start reactions- they SPEED UP reactions that would occur eventually.

True or False : the minimum amount of energy needed to stop reaction

False

chemical reaction

Process that changes one set of chemicals into another set of chemicals

Catalysts

Substances that speed up chemical reactions

What is reaction formation?

Switching unacceptable impulses into their opposites

Activation Energy

The minimum amount of energy required to start a chemical reaction

True or False : Each enzyme can only work with one substrate one type of reactions

True

True or False : Energy will either be released or absorbed

True

True or False : Enzyme have an optimal pH

True

True or false? Enzymes in the digestive tract catalyze hydrolysis reactions.

True