(a)[2]
Explain what the term immune response means.
(b(i))[3]
Myasthenia gravis is an autoimmune disease that interferes with a cell signalling pathway involving muscle cells. Suggest how the immune system acts to disrupt this cell signalling pathway.
(b(ii))[4]
Enzyme Y is located in the cell surface membrane of muscle cells. Enzyme Y functions to break down the cell signalling molecules that trigger muscle contraction when they are no longer required. Using the induced fit hypothesis of enzyme action, explain how enzyme Y breaks down the cell signalling molecules.
(c)[3]
Explain the advantages of using monoclonal antibodies in the treatment of diseases such as myasthenia gravis.