enzymes

Enzymes are made of

• lipids

• proteins

• nucleic acids

• carbohydrates

The function of enzymes is to __________________.

• provide with quick energy

• divide cells

• speed up reactions

• synthesize DNA

Enzymes are specific to their ___________.

• chemical reaction

• biomolecule

• cell

• substrate

Enzymes speed up chemical reactions by doing which of the following?

• increase activation energy

• decrease activation energy

• increase and decrease activation energy

• using no energy

Enzymes decrease activation energy and ______________ to speed up a reaction.

• denatures proteins

• weaken bonds of the reactants

• increases activation energy

• strengthens bonds in reactants

Enzyme is _____________ to its substrate.

• bigger than

• not specific

• denatured

• specific

Once substrate fits into enzyme, the enzyme ____________.

• changes into a different shape

• stays with the substrate forever

• changes only slightly

• is denatured

What is the name of the site where the enzyme and substrate bind?

• enzyme-substrate comple

• products

• substrate

• active site

Enzymes ______________.

• are products

• lower the activation energy

• are found in nonliving things

• are lipids

If catalase is denatured which of the following increases?

• H20 (water)

• O2 (oxygen)

• H2O2 (hydrogen peroxide)

• all of the above