falltopieces
Member
In this exam, which question do you think is the hardest one?
bluebaby said:last Q ...influenza + mutation ... i wrote half page on mutagens ONLY!! i failed T.T
truth..i hated the crossing over one...never liked that part of blue print.. i didnt mind the writing questions lol (i do modern and ancient so it was a breeze haha) but yeh...maybe part d on communication but i know u all didnt do thatfalltopieces said:In this exam, which question do you think is the hardest one?
*ccs* said:truth..i hated the crossing over one...never liked that part of blue print.. i didnt mind the writing questions lol (i do modern and ancient so it was a breeze haha) but yeh...maybe part d on communication but i know u all didnt do that
cataleptic said:I wrote the two full pages on influenza mutations.
Thats exactly what I wrote, background info on cell/antibody mediated responses allowed me to fill out the response a bit. I couldnt really think of any other angle to take, I spent the last 20 min adding bits and pieces with were most likely not needed lol.cataleptic said:Look in the other thread...
Hmm I'll try remember.
Basically if the virus mutates so much, then the protein antigens on its surface will also mutate. The human immune response is initially triggered by antigens, and immunity is provided by B and T cells that recognise their specific antigens.
Normally, the influenza antigens would be recognised immediately by the B and T lymphocytes, and the immune response is activated immediately to destroy the pathogens, so that the individual does not fall ill. However if the antigens continue to be different because of the mutation, then the individual will be unable to develop effective immunity as the virus will continue to be recognised as a new antigen, without memory cells corresponding to it in the blood. Hence they will most likely fall ill, as the body has to work to develop new antibodies.
Basically yeah, it would be hard for humans to develop immunity against the flu as the antigens would keep changing. Immunity would only be effective if the individual were to come into contact with the same pathogen, that had the same unmutated antigens.
It went something like that. But made sense. With detail.
I wrote a bit of stuff on antibiotics which probably not so relevant tot he question .Blackroze said:Thats exactly what I wrote, background info on cell/antibody mediated responses allowed me to fill out the response a bit. I couldnt really think of any other angle to take, I spent the last 20 min adding bits and pieces with were most likely not needed lol.
LOL, i wrote about the full space and included more after... cus i didnt KNOW what they wanted for the full 8 marks, so i just included as mani points as possible?cataleptic said:I wrote the two full pages on influenza mutations.
I covered those points too! I also talked about antibiotics which is sort of relevant- they are used to control disease too and there are anti-viral antibiotics!dash87125 said:LOL, i wrote about the full space and included more after... cus i didnt KNOW what they wanted for the full 8 marks, so i just included as mani points as possible?
i figured 2 marks for definitions, what it means wot it dus etc.. and then 5 marks for waht happens and points like natural selection, vaccines, immunisation, antibodies and antigens, and the last mark for the ASSESSment
Same with the option 7 marker :S just wrote as much as possible, ended writing about 6 pages for that 7 marker :S