The document discusses four main factors that affect enzyme activity: temperature, pH, substrate and enzyme concentration, and presence of inhibitors. Temperature affects activity as enzymes can denature at high temperatures, changing their shape. pH is important as enzymes only function in a specific pH range. Increasing substrate and enzyme concentrations increases reaction rate up to a point of saturation. Inhibitors bind enzymes and decrease their activity by blocking the active site.
4. -As the Temperature increases the rate of the reaction will
increase but only up to a certain point and it will drop sharply.
- The reason why the rate of reaction drops after a certain point is
because at high temperature proteins can be denatured and
keep in mind that most enzymes are protein-based catalyst
- So when protein is denatured it shaped and without the right
shape it doesn’t function well and so it’s not going to interact well
to with the substrate thus it’s activity decreases.
19. Enzymes are protein
based catalyst that
speed up chemical
reaction and the way
they speed up
chemical reaction is
by lowering the
activation energy.
ENZYMES
20. Most chemical reaction
did not occur
spontaneously in a cell
instead cells rely on
proteins called
enzymes to kick-start
chemical reactions and
speed them up
ENZYMES
21. Enzyme have unique
way to kick-starting
reactions. They work
by binding to one or
more specific
molecules called
reactants or substrate.
ENZYMES
22. Binding occurs at a
special region called
the active site, once
the substrate bind to
the active site they
form what’s called
an enzyme substrate
complex
ENZYMES
23. As the enzyme and
substrate begin to
react some of the
chemical bonds and
the substrate begin
to weaken causing
them to link together
ENZYMES
24. Eventually the
chemical reaction at
the active site lead
to formation of
different molecule
this is referred to as
the product.
ENZYMES
25. Once the reaction
occurred the product
is released from
active site. The
enzyme returns to
it’s original and
ready to react with
another set of
substrate.
ENZYMES
