OCR Biology F211 Exam - Tues 11'th January 2011

So like, why the hell was there nothing on the heart or anything!? That is so frutrating. I really prepared for that lol.

Anyone else seem to run out of time and go on a mad rush at the end, JUST finishing? (I hope)

Haha tutor! Erm yeah similar response to yours i guess.. i found the paper relatively ok but just that question on some bunch of flowers which god knows what i wrote.. all wrong.. and that question on "how to construct a graph" i mean im just sat there staring at the question.. so vague! I was so confused and had nothing to write i wrote draw line of best fit.. but crossed it out 'cos thats just pushing it! .. yeah i wrote meristem cells and that cell division happens by forming a cell plate in equator region or something..

Nope not heard of anyone yet.. would be good if someone does though. How would someone get hold of the paper though?

WHAT ABOUT the question that went something like;

'why do those flowers whose stems have been cut just before before they are put into water grow better' or something

wtffffffffffffffffffff!

Just gave you a rep! You made me feel so relieved! I think you should do alot more talking!!

It can't be bronchiole because the alveoli weren't relative in size if it were a bronchiole!

Definitely bronchiole!

If there were spares left over, which there usually are. My biology teacher went through it very quickly, so there must be other places in the country where there are a few spares. In theory anyway... I wrote line of best fit lmao, I just had no idea. I had done most of it, and I had around 30 minutes to devote to either the graph question or the plants/animals cell division question. Really annoying, because you've got the time to do it, you just don't know how to...

Yhhh donfahad i am pakistani

Soz mate, you've got it wrong. My biology teacher (must be the best in the country, predicted absolutely everything right on the paper, one of the questions word-for-word), said the following;

One mark for plain diffusion/osmosis through the cell membrane, as water molecules are very small. However, the second mark, will be for mentioning channel proteins, as water molecules, however small, are actually charged, and so a channel protein lets through molecules that are charged. Remember that the Phosphate heads are actually hydrophobic, and that there is a chance that a water molecule could hit that and be repelled. As a result, there are channel proteins that open for water molecules to leave.

The apoplast and symplast pathways are irrelevant to the cell surface membrane. They are relevant to how water, taken in at the roots, reaches the xylem cells.

As it happens, I only got the first mark, but think about it, they cannot expect you to explain the apoplastic and symplastic pathways, as well as an explanation of diffusion in two lines and two marks. Even if you somehow managed to fit it in, it is irrelevant because nowhere in the question does it mention that. It mentions cell surface membrane, ie, the plasma membrane, not the symplastic and apoplastic pathways, which go through a number of cells, membranes and plasmodesmata.

phosphate heads are hydropphilic, not phobic...
so much for best biology teacher evar

phosphate heads are hydropphilic, not phobic...
so much for best biology teacher evar

already been pointed out, and accepted by me as a mistake.

f*ck off yeh?

Location Slough, you blates go to Slough Grammar

lol at this argument... is it still going on? :P

some n00b pointed out that i got hydrophilic and hydrophobic mixed up. I was sorting him out.

oh, and you spelt hydrophilic wrong, even with a spell checker. That sucks man...

Spell checker? That comment was a bit of a fail, besides , i spelt hydrophilic wrong on the student room forum
GEE-ZUZ, deduct marks from my actual written exam .... awww