Enzymes

Enzymes are considered to be 

• Lipids
• Carbohydrate
• Protein
• Nucleic Acid

Tags

NGSS.MS-LS1-7

What is the purpose  of an enzyme?

• give permission for the reaction
• raise activation energy
• speed up reactions
• control how many reactions occur

Tags

NGSS.MS-LS1-7

Where do substrates bind on an enzyme?

• voltage-gated channels
• surface receptor
• calcium channels
• active site

Enzymes are capable of increasing the rate of a chemical reaction within a living cell.  Enzymes accomplish this through which of the following means?

• reducing the number of products   
• reducing the activation energy
• increasing the temperature of the cell
• increasing the concentration of reactants 

Tags

NGSS.HS-PS1-4

NGSS.HS-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?

• reusable
• catalyst
• specific
• fragile

Once a new product leaves an enzyme, the enzyme is unchanged and ready for the next substrate.  What is this called?

• reusable
• catalyst
• specific
• fragile

What 3 letters do enzymes typically end in?

• -ose
• -ase
• -ese
• -tic

The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?

• Enzymes increase the energy of the reactants.
• Enzymes decrease the energy level of the products.
• Enzyme decrease the activation energy of the reaction.
• Enzymes reverse the direction of the reaction.

Tags

NGSS.HS-PS1-4