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Enzymes
IB Biology Chapter 7
18
Biology
11th Grade
12/07/2011

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Term
Enzymes are _____ proteins that work as catalysts.
Definition
globular
Term
They are made by living cells and ______ biochemical processes.
Definition
speed-up
Term
_____--enzyme-->product
Definition
substrate
Term
Most enzymes only catalyze one biochemical reaction; this reaction is called ______.
Definition
enzyme-substrate specificity
Term
Enzyme-substrate specificity is when the substrate binds to the _____.
Definition
active site
Term
The match between enzyme's active site and substrate are called/like _______.
Definition
lock and key model
Term
The lower the pH the more acidic it is; meaning there are more _______.
Definition
hydrogen ions
Term
pH scale is logarithmic; meaning
Definition
it increases/decreases by levels of 10
Term
If the pH level changes too much from optimal level for an enzyme, the enzyme can be ______.
Definition
denatured (pH level)
Term
When something is heated there is more kinetic energy; and the level of enzyme activity ___.
Definition
increases (energy)
Term
When something is too hot there is a lot of kinetic energy making bonds easier to break; and the level of enzyme activity _____.
Definition
decreases (energy)
Term
Temperature too hot for an enzyme can also ______ an enzyme.
Definition
denature (temperature)
Term
The more substrate concentration added the more the rate of reaction _____.
Definition
increases (substrate concentration)
Term
When there is an optimal level of substrate concentration added the rate of reaction ________, but never reaches a maximum.
Definition
increases less significantly (substrate concentration)
Term
Milk example: ___ --lactase--> glucose and galactose
Definition
lactose
Term
[image]
Definition
directly proportional
Term
[image]
Definition
exponential increase
Term
[image]
Definition
decelerating increase
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