The graph below shows the effect of substrate concentration on the rate of enzyme reaction.
nutritioninplants4320211532.JPG
(a) (i) account for the shape of the graph between A and B.
(ii) B and C.
(b) How can the rate of reaction be increased after point B?
c) State two other factors that affect the rate of enzyme reaction.


Answer:

a) i)Between A and B-Rapid/fast increase in the rate of reaction. More active sites of enzymes available, for a large number of molecules of substrate; hence increase in the rate of reaction.

ii)Between B and C-Enzymes/substrate are in equilibrium/All active sites are occupied; hence rate of reaction is constant

b)By raising concentration of enzymes and substrates.

c)-PH
-Temperature
-Presence of inhibitors/ co-factors and co-enzymes


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