Flashcards
Enzymes
Substance that speeds up the rate of a chemical reaction
substrate
enzyme
molecule
catalyst
A substance produced in a chemical reaction
Product
Large organic compounds that enzymes are made from
sugar
fat
protein
mitochondrium
A change in the shape of a protein (such as an enzyme) that can be caused by changes in temperature or pH (among other things).
Denature
Reactant of an enzyme-catalyzed reaction:
protein
catalyst
substrate
enzyme
Acid
Base
Neutral
Temperature at which an enzyme works the best
denature temperature
maximal temperature
minimal temperature
optimal temperature
A substance that slows down or stops a chemical reaction
inhibitor
catalyst
Three factors that affect enzyme activity:
concentration
nutrient saturation
pH
luminosity
temparature
concentration
pH
temparature
Specific part of an enzyme where a substrate fits:
Active site
The minimum amount of energy required to start a chemical reaction
activation energy
Without the presence of enzymes, the reactions necessary to sustain life would require .... in order to occur.
With what 3 letters do enzymes typically end?
-ase
-ese
-tic
-ose
With what 3 letters do substrates typically end?
-ese
-ose
-tic
-ase
Based on the graph, what is the optimal temperature for this enzyme?
40°C
25°C
15°C
30°C
Which of these is NOT true?
Enzymes can denature (change shape) when the temperature gets too high.
Extreme pH can denature enzymes.
Enzymes speed up chemical reactions.
Enzymes can only be used once in a chemical reaction
Enzymes can only be used once in a chemical reaction
The pH at which an enzyme is most efficient is called the .... pH of an enzyme
Enzymes speed up reaction rates by changing...
activation energy
temperature
concentration
pH
The current model of enzyme action is referred to as the
Lock & Key Model
Singer-Nicolson Model
Induced Fit Model
Davson-Danielli Model
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