Enzyme

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

What happens when enzymes are heated to a high temperature?

• The enzymes die.
• The shapes of the enzyme are altered or denatured
• The enzymes' amino acid sequence changes.
• The enzymes remain the same

What are the enzymes called when they are at high temperature or extreme pH?

• denatured

• Killed

• inactive

• normal

What happens to an enzyme when it is denatured?

• Activation energy is lowered.
• It becomes stronger.
• It loses its shape.
• Activation energy is raised.

Which factors can change the shape of an enzyme and thus denatures a enzyme?

• Excessive heat and changes in pH
• Nothing can
• Exposure to light and sound
• Exposure to bacteria and Amoebas

Every enzyme has a optimal temperature and pH. True or False?

• True 
• False