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Predict My A Level Grades

Do good grades predict success?

I don’t think so, let me elaborate.In my current class there is one student which always gets the highest grades out of everyone, Lets call him bob. Most of the time bob will get a perfect 10 (In The Netherlands we get grades from 1–10) Whereas the rest of my class will hover around the 8 to 9 marks.I however, score closer to the 6 to 7, a 5.5 equivalent to a C.Now let’s compare my “succes” to his.Subject 1 (me)18 years oldProgramming since age 13First programming job at 16Won the school wide programming contest despite being two hours lateCurrently has a solid job as web developer.Two companies actively asking me to join themSubject 2 (bob)21 years oldProgramming since age 18no job (as a programmer)Didn’t bother to participate in the programming contestNo online presence of his code and/or abilitiesStruggling to find an internship due to lacking social skills.You see, bob’s only driver to put effort into programming is his grades. He doesn’t actually enjoy it and isn’t terribly interested in it either. But bob has to have a diploma before he can stop going to school.And then there’s me, i love programming. You will almost never find me without a laptop within 5 yards of me. I spend a lot of time building my network, writing code and learning new stuff. But i don’t put school on spot #1 in my priorities list. I’ve checked out the exams and they don’t seem all that shocking. So i spent more time on doing the things that i think will be valuable in the long run.So no. good grades don’t necessarily mean you are successful. It’s mostly what you do with the time NOT spent on studying to get those grades.

I need help with this question about my recent grade 11 bio lab on diffusion through membranes?

1
Im guessing the tube has a semi permeable membrane to the liquid in the beaker.
The molasses will stay where they are, as they are too big for the gaps in the membrane.
The water in tube will diffuse into the beaker solution, as this can pass through the membrane.
The water moves because it has a natural tendency to try spread out evenly through out its whole volume.
This is diffusion.
It moves in that direction because the 10% solution has a higher water potential than the 5% solution.
As the water moves, the % of the solution will balance out and become the same.


2
The starch molecules would stay inside the tube as they are too big to pass through the membrane.
The glucose molecule has only 24 atoms and so it can pass through the membrane.
Starch would just absorb water until the water potential in both sides of membrane was the same.
The glucose and water could move over in both directions so it would level out the water potential and the glucose levels.

3
Starch contains lots of glucose molecules.
Your body needs glucose to respire.
Starch will never be able to pass through the membrane of a body's digestive system, and so could never be used as a source of energy.
The chemicals in the stomach will break down the starch into lots of glucose molecules.
These can pass through the digestive membrane and can therefore be used.

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