ENZYMES G11 General Biology

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

• catalyst

• reusable

• specific

• fragile

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

• reusability

• denaturation

• specificity

• fragility

Any substance that is acted upon by an enzyme is called a?

• coenzyme

• vitamin

• substrate

• polypeptide

Enzymes are?

• proteins

• carbohydrates

• lipids

• nucleic acids

An enzyme speeds up a chemical reaction in the cell and can only be used once.

• true

• false

What is the function of an enzyme?

• enzymes break themselves into small pieces

• enzymes slow down chemical reactions

• enzymes speed up chemical reactions

• enzymes combine products to form reactants

Which of these is an enzyme?

• sucrose

• amylase

• fructose

• glucose

Which of these is NOT true?

• enzymes can denature (change shape) when the temperature gets too high

• extreme pH can denature enzymes

• enzymes speed up chemical reactions

• enzymes can only be used once in a chemical reaction

What is another name for enzymes?

• microorganism

• biological catalysts

• inorganic catalysts

• chemical catalysts

How do enzymes speed up chemical reactions?

• increasing activation energy

• decreasing activation energy

• increasing deactivation energy

• decreasing deactivation energy