bio review enzymes
DESCRIPTION
Biology review lesson on enzymes for my 3 NA students and 4 NA students.TRANSCRIPT
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Biology ReviewEnzymes 101
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Enzymes are…
Enzymes
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Enzymes are…
Enzymes
Proteins
Specific
Work in minute
amounts
Speed up the rate of chemical reactions
Affected by
temperature
Affected by pH
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How Enzymes Work: Lock and Key Hypothesis
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How Enzymes Work: Lock and Key Hypothesis
Substrate enters active
site of enzyme
Enzyme-substrate complex is
formed
Substrate bonds are
broken
Products are formed and leave the enzyme
Enzyme active site is now free
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Lock and Key Hypothesis
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The enzymes you need to know
Enzyme: Salivary amylase
Substrate: Starch
Product: Maltose
Enzyme: Pepsin
Substrate: Proteins
Product: Polypeptide
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The enzymes you need to know
Enzyme: Lipase
Substrate: Fats
Product: Fatty acid and glycerol
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Factors that affect enzymes
Enzymes
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Factors that affect enzymes
EnzymesLow temperatures
Inactivation of enzymes
Denaturation of enzymes
High temperatures
Out of the pH range
Denaturation of enzymes
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Temperature
InactiveDenatured
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pH Graph
Denatured Denatured
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All enzymes are denatured once it is out of the pH range
Optimum pH for pepsin is 2
Optimum pH for salivary amylase is 7
Optimum pH for lipase is 9