Biochemistry

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 

What is structure A?

• Substrate
• Active site
• Enzyme
• Products

What is structure D?

• Substrate
• Active site
• Enzyme
• Products

What is structure C?

• Substrate
• Active site
• Enzyme
• Products

What is structure E, F, G?

• Substrate
• Active site
• Enzyme
• Products

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