The main thing I remember after coming out of the exam was friends debating whether, when picking the letters on the graph to do with action potentials, you were supposed to put all of them for some reason. Also, I wasn't sure about the question asking how temperature influences the rate of photosynthesis, I didn't know if you had to describe the results in the table or explain the actual biology. Ended up doing both, had to write in the additional space. And the pond weed question depressed me