Chemical Reactions/Enzymes

An enzyme speeds up a reaction by

• lowering the activation energy.
• raising the activation energy.
• releasing energy.
• absorbing energy.

Tags

NGSS.HS-PS1-4

In a chemical reaction, a reactant binds to an enzyme at a region known as the

• catalyst.
• product.
• substrate.
• active site. 

Chemical reactions always involve

• the breaking of bonds in reactants.
• the formation of new bonds in products.
• the breaking of bonds in reactants and the formation of new bonds in products.
• enzymes. 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Chemical reactions that release energy often occur 

• spontaneously.
• nonspontaneously.
• rapidly.
• slowly. 

Tags

NGSS.HS-PS1-4

Which concentration of catalase will produce the fastest reaction rate?

• 5%
• 10%
• 15%
• 20%

Tags

NGSS.HS-PS1-5

An enzyme is a catalyst.

• True
• False

___________________ are the elements are compounds that leave (are formed in) a chemical
reaction.

• Polymers
• Bonds
• Reactants
• Products

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How do enzymes speed up chemical reaction?

• Increasing activation energy

• Decreasing activation energy

• Increasing deactivation energy

• Decreasing deactivation energy

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?

• reusablility
• denaturation
• specificity
• fragility