enzyme Flashcards
what are enzymes
enzymes are protein
that speed up chemical reactions while remaining chemically unchanged at the end of the reaction
what is activation energy
is the energy needed to start a chemical reaction
what is enzyme catalase
is to speed up chemical reaction
what are lock and key
lock - enzyme
key - substrate
where is the active site located at
enzyme
how is an enzyme-substrate complex formed
only the substrate with a shape complementary can fit into the enzyme
what happens to the activation energy when an enzyme-substrate complex is formed
it is lowered so that reaction takes place to convert substrate into products
why is the enzyme remain chemically unchanged at the end of the reaction
so that enzymes can be reused. hence enzymes are required in a small amount
describe the action of reaction by using lock-and-key hypothesis
(state the enzyme) is lock and
(state the substrate) is key
the enzyme has an active site that complements the shape of the substrate
substrate fits into the active site
when the (substrate) and (enzyme) comes tgt, they form an enzyme-substrate complex
thus reaction occurs
(substrate) is broken down into (products)
the unchanged enzyme can be reused
what temp where enzyme is completely denatured
more than 40 degrees Celcius
what does it mean to be denatured
means that it cannot work anymore
at low temperatures, enzymes are…
inactive
