Enzymes

Enzymes are considered to be 

• Lipids

• Carbohydrate

• Protein

• Nucleic Acid

What is the purpose  of an enzyme?

• give permission for the reaction

• raise activation energy

• speed up reactions

• control how many reactions occur

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 

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

What 3 letters do enzymes typically end in?

• -ose

• -ase

• -ese

• -tic

Which of the following conclusions can be drawn from this graph?

• The optimum pH of the enzyme is 6.6.
  

• The optimum pH of the enzyme is 5.8
  

• The enzyme’s activity increases as pH increases 5.0 to 9.0
  

• The enzyme’s activity is greater around pH of 8.0 .
  

What is the name for the mechanism of enzyme activity?

• Lock and key

• jigsaw puzzle

• hammer and nail

• two hands pattern