What would your perception of intelligent be? GCSE grade wise. :3
70% exam technique 20% hard work 10% remembering things.
To get an A in science subjects, you need to know both be good at the subject, and then also revise the facts you will need to regurgitate. For example, in chemistry you will need to both memorise piles of reaction conditions and recite definitions, but also be able to visualise molecules and imagine what happens to them. If you only could do one or the other, you would stick on a C. With Physics, it is more important to have the natural aptitude, as there are far fewer facts you need to know (a whole lesson of notes can fit on one side of A4 usually, and 95% of them are on handouts for us). For Biology, you need to memorise loads, but you get a little more flexibility, for example there might be 10 possible ways to gain a mark on a 5 mark question.
Not necessarily "intelligence" so much as "aptitude for that particular subject".
Personally I think it's swaying more towards effort, and a little bit of luck on exam day.
I got A*AD, not because I am super-intelligent or stupid, but because I put a reasonable amount of effort into two of them and slacked off on the other, which is why I think it's more effort than brains.
Oh, and also intelligence =/= exam technique, although a-levels would have you believe otherwise...
You can probably do it on hard work alone, a girl I know is a dumb as they come got AAB at a-level a first at uni walked right into a 30k a year job and yet only a week ago asked when did unicorns go extinct...
Achieved so much on just hard work and aggressive parents!
a combination of both.
I have a friend who worked everyday at college until about 6 in his AS year, but his AS grades weren't too great.
So no, hard work cannot suffice without some intellect.
I think it's a combination of both, I've learnt after the first year of AS levels that hard work doesn't necessarily mean you will get A's in everything, as I did so much revision for history and came out with a B, whilst in Literature, I did the least and came out with an A. I think the moral of the story for me, was that it's about working hard but also working smart.
Totally depends on the A levels your doing, some subjects like maths, further maths and physics (to some extent) do not necessarily require hard work assuming your academic enough (though that doesn't mean hard work wont get you to the same level). On the other hand there are definitely A levels which require substantial effort to remember vast amounts of info such as biology and psychology etc.
However there's also a huge element on luck and exam technique which is not to be over looked.
basically, you need to be clever to get good grades, but to be clever, you need to work hard, and to work hard, you need to be determined, so all in all, be determined to do well and success will follow.