Enzymes Quiz

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 (denatured)

• The enzymes' amino acid sequence changes.

• The enzymes remain the same

Letter E...

• active site
• enzyme
• substrate
• products

In the diagram, what is letter A? 

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

Letter D...

• active site
• enzyme
• substrate
• products

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

• Coenzyme
• Substrate
• Vitamin
• Polypeptide

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 function of amylase?

• to break down protein into fatty acids

• to break down carbohydrates into amino acids

• to break down starch into glucose

• to break down protein into glucose

Letter C...

• active site
• enzymes
• substrate
• products

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.