Throwback/Flashback Enzyme mini lesson

Throwback/Flashback Enzyme mini lesson

By Laura Rodriguez

​The substrate binds to the enzyme at the active site - the shape matches - induced fit!

​​Enzymes are specific to substrates

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​Enzymes speed up chemical reactions by lowering the activation energy required to start the reaction

​Enzymes are catalysts

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Changes in pH, temperature, salinity, will slow down the action of the enzyme

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Enzymes & the environment

Enzymes work in specific environmental ranges

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Multiple Choice

An enzyme speeds up a reaction by

• lowering the activation energy.
• raising the activation energy.
• releasing energy.
• absorbing energy.

Multiple Choice

What happens when enzymes are heated to a high temperature?

• The enzymes die.

• The shape of the enzyme are changed and it denatures

• The enzymes' amino acid sequence changes.

• The enzymes remain the same

Multiple Choice

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

• reusablility
• denaturation
• specificity
• fragility

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

Which enzyme is most efficient in a basic solution?

• A
• B

Multiple Choice

Enzymes are composed of which of the following monomers? 

• amino acids
• carbohydrates
• nucleotides
• monosaccharides