Enzyme action Flashcards
1
Q
What do enzymes cataylse?
A
metabolic reactions at a cellular level (respiration) and for the organism as a whole (digestion in mammals)
2
Q
Define intracellular
A
within cells
3
Q
Define extracellular
A
outside cells
4
Q
What is the activation energy?
A
the amount of energy needed to be supplied to the chemicals before the reaction can start
5
Q
What lowers the activation energy?
A
a enzyme substrate complex
6
Q
What is the ‘induced fit’ model?
A
the enzyme substrate complex changed shape slightly to complete the fit
7
Q
What is the the actuve sites shape detemined by?
A
the enzymes tertairy structure which is determined by the primary structure
8
Q
How can the tertairy structure of the enzyme be altered?
A
by changes in the pH and temperature
