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All chemical reactions require some amount of energy to get them started.
catalyse
The area on the enzyme where the substrate or substrates attach to is called
catalyse
the substance at the beginning of the process, on which an enzyme begins it’s action
substrate
Enzymes increase reaction rates by ............... the Activation energy
decreasing
- the active site has a rigid shape
- only substrates with the matching shape can fit
- the substrate is a key that fits the lock of the active site
lock and key theory
- the active site is flexible, not rigid
- the shapes of the enzyme, active site, and substrate adjust to maximumize the fit, which improves catalysis
- there is a greater range of substrate specificity
induced fit model
protein part of the enzyme
apoenzyme
non protein part of the enzyme
co factor
part of the co factor that contain of small, inorganic molecules
prosthetic groups
part of the cofactor that contain large organic molecule
co enzyme
vitamins are example of
co enzyme
mention three types of enviromental factor that affect enzyme reactions
pH, substrate concentration, temperature
As temperature rises, the enzymes and substrate molecules move
faster
The enzyme molecules begins to lose its shape and activity, and it’s said to be
denatured
inhibitor that bind to the substrate
competitive inhibitor
structure different than substrate
noncompetitive inhibitor
