- Edited
The biggest stuff-up I did on the prev. bio sac was not understanding that the experiment that the Bio teachers put in was an anabolic reaction, not a catabolic reaction, but I recall only losing one mark on the 'draw the diagram' question. Also, not being able to comment on uncertainty (a two-marker I left blank)
Uncertainty should mean that there is a gap in the knowledge is a lack of the exact knowledge of the value of a measured quantity. So, something that is quantitative should have little uncertainty.