Okay this is a work in progress; more comments will follow later.
You really need to read, understand the question and answer accordingly. As an example, question 2 asked for the method of the test used to determine if Corynebacterium diphtheriae produces a toxin. Why would you include the aim/purpose of the test in your
answer? It almost seems like you swotted the answer and then regurgitated it in the paper. Oh and another thing; it is VERY annoying to read through unnecessary stuff before 'finding' the answer I want. And why would you draw the plate? A total waste of time and effort. I didn't even look at it!!