Enzymes

What makes an enzyme substrate specific?

• Size
• Shape
• Name
• Location it is found in

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 type of macromolecule are enzymes?

• Protein
• Carbohydrate
• Lipid
• Nucleic Acid

Enzymes need certain environmental conditions in order to function properly.  What happens when enzymes are heated to a high temperature?

• they die
• they denature
• they change their amino acid sequence
• they work better

The part of the enzyme that the substrate bonds to is called the _____.

• active site
• activation energy
• bond site
• peptide bond

Which of these do NOT affect enzyme activity?

• lowering temperature
• raising temperature
• lowering pH
• time of day

Which of these is NOT true.

• Enzymes can denature (change shape) when the temperature gets too high.
• Enzymes can only be used once in a chemical reaction. 
• Enzymes can denature when the pH changes. 
• Enzymes speed up chemical reactions. 

Which of these is most likely an enzyme?  (Based on the suffix)

• Sucrose
• Galactose
• Fructose
• Amylase

Which is NOT true?

• Enzymes speed up chemical reactions
• Enzymes react best at a specific temperature
• Enzymes only control ONE type of reaction
• Enzymes are made of lipids

What is another name for enzymes?

• active sites
• microorganisms
• biological catalysts
• substrates