Ch 5B enzymes

Ch 5B enzymes

Multiple Choice

Each enzyme only has 1 substrate that will fit its active site.  What is this called?

• reusable
• catalyst
• specificity 
• fragile

Multiple Choice

Which of the following denatures an enzyme?

• High Temperatures

• Incorrect pH

• Both

Multiple Choice

Based on the graph, what temperature does this enzyme work best?

• 15 C

• 40 C

• 30 C

• 50 C

Multiple Choice

Letter D...

• active site
• enzyme
• substrate
• products

Multiple Choice

What is another name for enzymes?

• chemical catalysts
• microorganisms
• biological catalysts
• inorganic catalysts

Multiple Choice

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

Multiple Choice

An enzyme speeds up a chemical reaction in the cell but can only be used once.  True or False? 

• true
• false

Multiple Choice

What makes an enzyme substrate specific?

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

Multiple Choice

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 .
  

Multiple Choice

What 3 letters do enzymes typically end in?

• -ose
• -ase
• -ese
• -tic

Multiple Choice

What is structure A?

• Substrate
• Active site
• Enzyme
• Products

Multiple Choice

Where do substrates bind on an enzyme?

• voltage-gated channels
• surface receptor
• calcium channels
• active site

Multiple Choice

What is the purpose  of an enzyme?

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

Multiple Choice

Enzymes are considered to be 

• Lipids
• Carbohydrate
• Protein
• Nucleic Acid