Enzymes are

• Lipids
• Protein
• carbohydrates
• nucleic acids

Which of the following binds to the active site of an enzyme

• water
• product
• substrate
• any other enzyme

Which of the following correctly represents the mechanism of enzyme function

• E + S --> E-S-->E-P-->E+P
• S+P-->E-P-->E+P
• A.E + P -> E-P -> E-S -> E + S
• A.E + P -> E-S -> E-P -> E + P

An enzyme can only bind one reactant at a time

• True
• False

An enzyme speeds up a chemical reaction in the cell, but can only be used once.

• true
• false

What has influence on the speed of reaction

• pH
• Temperature
• Concentration of substrate
• All of the above