This is a very vague question. Are you in the UK and talking about AQA or Edexcel or something? There are dozens of practice and past papers you can use to answer this question.
If you could tell us if you are doing GCSE or A-level, and what exam board you are doing it with, that would be great inshaAllah.
Just as some examples, I've linked here past papers for biology A-levels from AQA, they'll provide the question paper, mark schemes and examiner reports. Huge help and a *must* when revising, they'll give you an idea of what to expect.
& as our sisters have mentioned look at the past exam papers. More often than not very similar questions crop up but they tend to word them in a different way.
All the best. Let us know how you get in insha Allah.