Uni Stuff > Australian National University
Biologists! How was it?
ahmed:
--- Quote from: JL_91 on June 11, 2008, 11:41:10 am ---Oh god..I stuffed up that antigen question, I had to guess it. I think I wrote Th cells lol. And I left the final part of the 1st short answer (something about a feature of a fibrous protein and how the arrangement of chains gives that feature) blank because I forgot absolutely everything I learned about that! It was only 1 mark so I suppose it's not the end of the world for me lol :S ...I put collagen for a fibrous protein, and said that its key function is that it gives strength and elasticity to skin. My friend and I came out freaking about our hormone definitions...ours were basically identical to the one they gave on the paper! My biology teacher said the paper was very easy, so they're going to mark it hard. I was actually expecting a hard paper, but even last year's was marginally harder than this one.
--- End quote ---
The correct answer is Th cells. The elasticity is due to the beta-plated sheets in the secondary structure of the protein. I think i will probably get an A. :P
JL_91:
Yes, that's correct about the beta sheets, but I was referring to the second-last part of that first short answer question, where they asked us to name a fibrous protein and state its function (not what feature gives it a certain property) :) The one I blanked on was the last part of that question..which annoys me immensely, because I knew the answer..I just wasn't able to pull it out under exam conditions :( But I'm so glad so many people are saying that Th cells is right lol! I think the most I can hope for is a high A-low A+..
username:
For the antigen question, do you think they would have accepted my answer if I specified that the MHC markers on the surface of T cells and B cells were involved in the recognition of self and non self?
JL_91:
--- Quote from: username on June 15, 2008, 04:31:01 pm ---For the antigen question, do you think they would have accepted my answer if I specified that the MHC markers on the surface of T cells and B cells were involved in the recognition of self and non self?
--- End quote ---
Hmm..but MHC markers are present on the surface of the body's 'self' cells (e.g. cells in your organs), and recognised BY the T and B cells...so I'm not sure if they would or wouldn't!
I'm feeling so paranoid now. I know I've made a few dumb mistakes, but I don't know how costly it will be :( I'm just hoping I haven't made any more silly mistakes! I guess all we can do is sit back and wait until August 4th to find out. Does anyone think that getting a low A+ on this exam would completely remove the possibility of a mid-high 40s score in Bio?
jajab:
what about a high A?
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