How many marks are given for background theory?
What exactly is a cofactor?
Will changing the concentration of calcium ions effect the rate of coagulation of milk? Why?
Re. marks - I don't know what board you are doing - the coursework mark scheme ought to be in the specification. A cofactor is a chemical that is needed for a particular enzyme to work. Calcium increases milk coagulation. The mechanism is very complex and you don't need to know it for AS level