K.C.S.E Biology Q & A - MODEL 2008PP1QN05
(a) State two factors that affect enzymatic activities
(b) Explain how one of the factors stated in (a) above affects enzymatic Activities
(a) Temperature PH co- factors, co- enzymes; enzyme product concentration; substance concentration/ metabolic poison
(b) Temperature- increase in temperature increases rate of enzymatic activity upto an optimum/ low temperature increases enzymatic activity/ too high temp about optimum point denatures enzymes/ enzymatic activity occur at optimum temp.
Ph- Enzymes work best at optimum ph/ or extreme for ph denatures enzymes.
Enzyme con – Increase in con increase enzymatic activity occur at optimum temperature
Co- enzymes – denatures enzymes increasing rate of activity
Strate/ enzyme cone- increase in concentration increase enzymatic activity upto certain level.