Enzymes

In the diagram, what is letter A? 

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

In a chemical reaction, ________ are what you have at the end

• Products

• Molecules

• Reactants

• Substances

What happens when enzymes are heated to a high temperature?

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

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 .
  

Based on the graph, what is the optimal temperature for this enzyme? 

• 15^oC
• 40^oC
• 30^oC
• 35^oC

Enzymes are an example of

• Lipids

• Carbohydrate

• Protein

• Nucleic Acid

Letter B...

• active site
• enzyme
• substrate
• products

Letter D...

• active site
• enzyme
• substrate
• products

What is the purpose  of an enzyme?

• give permission for the reaction
• raise activation energy
• speed up reactions
• control how many reactions occur

Letter E...

• active site
• enzyme
• substrate
• products