Enzymology

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.

Any substance that is acted upon by an enzyme is called a(n)?

• Coenzyme
• Substrate
• Vitamin
• Polypeptide

In the diagram, what is letter A? 

• product
• substrate
• enzyme-substrate complex
• active site

Letter C...

• active site
• enzymes
• substrate
• products

Enzymes provide a site where reactants called substrates can be brought together in an enzyme-catalyzed reaction. The site is called the

• enzyme substrate complex.
• reaction site.
• active site.
• lock and key.

The current model of enzyme action is referred to as the:

• Induced Fit Model

• Lock & Key Model

• Michaelis-Menten Model

• Tyra Banks Model

When a molecule can occupy the same active site as the substrate, a situation called __________________ can result

• Competitive lnhibition
• Allosteric Regulation
• Non-Competitive Inhibition
• Feedback Inhibition

A receptor site that a molecule can bind to that changes the shape of the active site is called a(n):

• Allosteric Site
• Active Site
• DiSulphide Bridge
• MHC Receptor

Chymotrypsin is a digestive enzyme that breaks down:

• Fats

• Carbohydrates

• Fibre

• Proteins