Just wondering does the percentage you go into the exam with make a difference ? For example , you get 10% in Science for your experiment work. Does impact the grade or is it something you shouldn't rely on ?
You should rely on all your marks! Like you could be in a situation where you're at a fail but you're courseworks save you from getting a fail!
Coursework A (Lab copy): 10%
Coursework B (Investigations): 25%
Exam paper: 65%
Like if you lose these marks, coursework A & B, you're already only getting a C (65%) (if you got the whole exam paper correct which is extremely hard). So rely on every bit of your marks!