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Enzymes Review Unit 1B
Terms in this set (23)
to speed up a reaction
True or False: Enzymes start chemical reactions.
FALSE. Enzymes don't start reactions- they SPEED UP reactions that would occur eventually.
The reactant(s) that an enzyme acts on
The enzyme binds to its substrate, forming a(n) ...?
What is the active site?
The active site is the place on the enzyme where the substrate binds.
True or false: Enzymes fit with ANY molecule/chemical/substrate.
FALSE. Each substrate/reactant has a unique shape. The have a specific substrate the work on
The energy required to initiate a reaction.
Lock and Key Model
Enzymes are specific. The only work on substrate(s) that "fit" the enzyme's active site ... just like a key will only fit in a specific lock.
The chemicals that begin a reaction are called ...
Reactants or Substrates
The chemicals at the end of a reaction are called ...
pH, Temperature & Substrate Concentration
Three factors that affect enzyme activity
pH between 0-7
pH between 7-14
pH of 7
Temperature at which an enzyme works the best
Change in shape of an enzyme due to extremes in temperature or pH, causes the enzyme to stop functioning
Type of biomolecule an enzyme is
Names of Enzymes
Based on their substrates, ends in "-ase" EX: lipid-lipase, protein-protease, lactose-lactase
Characteristics of an enzyme after catalyzing a chemical reaction
pH at which an enzyme works best
Usually ends in -ase
Enzymes work by _________ activation energy
Monomer/subunit of enzymes
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