(a(i))
State one example of a substance that can function as a non-competitive inhibitor in enzyme reactions.
(a(ii))
For the inhibitor you have identified, explain why it is non-competitive.
(a(iii))[4]
The graph shows the rate of an enzyme-catalysed reaction plotted against substrate concentration when no inhibitor is present. Using the same axes, sketch the curve for this reaction if a competitive inhibitor were present.
(b(i))
Place ribosome, tRNA and mRNA into the boxes below so that the order in which they are involved is shown correctly.
(b(ii))[3]
Sequences of three bases code for particular amino acids. However, UGA does not usually code for an amino acid. Suggest its use.
(c(i))
What are the products of ATP hydrolysis?
(c(ii))[3]
Give two uses of the energy released by ATP hydrolysis in cells.