Understanding Enzymes: The Role of Proteins in Chemical Reactions
Enzymes are specialized proteins made of amino acids that facilitate biochemical reactions. Each enzyme has a specific shape suited for its job, typically ending with the suffix -ase. They speed up reactions by lowering the activation energy required, allowing them to act repeatedly without being consumed. Enzymes interact with substrates, fitting into active sites like a key fits into a lock, transforming reactants into products. Their activity can be influenced by conditions such as temperature and pH, which may either inhibit or enhance their function.
Understanding Enzymes: The Role of Proteins in Chemical Reactions
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Presentation Transcript
ENZYMES . . . What are proteins (made of _________) ____________ is very specific to its job. End with suffix ___________ _____________ up reactions by _______________ activation energy (energy needed to start a reaction. Are ____________ by the reaction(can do there job over and over again.
ENZYMES . . . What are proteins (made of _amino acids_____) ___Shape_______ is very specific to its job. End with suffix __-ase_______ ___Speed________ up reactions by ___Lowering________ activation energy (energy needed to start a reaction. Are __unchanged_____ by the reaction(can do their job over and over again).
Lowering Activation Energy • Blue Line – normal reaction pathway • Red Line – enzyme assisted pathway
Substrates . . . Are the reactants that __________ act upon. Fit into the _________ ________ like a key fits into a lock. Are changed into ___________
Substrates . . . Are the reactants that __enzymes__ act upon. Fit into the _active__ __site____ like a key fits into a lock. Are changed into __products______
Can you identify the Enzyme and substrates in these examples . . .
ENZYME Activity may be . . . Inhibited by conditions that ______ _____ _____ _________________ _________________ Slowed by ______________ temperatures. Increased by_____________ temperatures.
ENZYME Activity may be . . . Disabled by conditions that change their shape _high temperatures___ __pH___________ Slowed by __cold__ temperatures. Increased by__warm___ temperatures.
