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Rafy could you please move this to the short answer section for everyone :) 2012 Option Topics Q31-35:

exactly what i said bra :)

So did I :)

Re: 2012 hsc mc imo 20 is B, but there are quite alot of 'conflicting perspectives'(ohhh yes i did :) ) surrounding it

2012 hsc mc Ok so here is a scan of it, note that I only took about 3 minutes doing this and my scanner is not the best in the world :) You might have to rotate a couple of pages...

Mcfarlane Burnet; just talk about clonal selection theory and how thiisa llowed for the development of more effective vaccines etc ---->increased understanding of prevention of disease

+1000

I put a calculation in there for rbc prac question for good measure :)

lol like 2 MC questions pissed me off, the rest of the exam was way too easy, nothing requiring you to know concepts etc.

Did you guys say swim bladder for fish and tympanic organ for insects in the "vibrations" question 31 c) ii)

100% agree

Bro you can easily get band 6 imo :)

Yes

Interleukin 2 to be exact ahahah :), note that B cells also possess MHC 2, thus are able to present antigens to T cells

Thisis in communication, with reference to sound waves: increased frequency=increased pitch viceversa, increased amplitude=increased loudness of the sound vice versa, wavelenth inversely proportional to frequency=determines how far the sound travels, i.e. short wavelength=short distance vice...

mRNA: is able to travel between the nucleus and cytoplasm, it travels from within the nucleus to the endoplasmic reticulum to the ribosomes where translation occurs. tRNA: anticodons whcih match to triplet codons in the mRNA sequence, each tRNA anticodon carries a specific amino acid, when in...

+ chloroquinine was the first synthetic anti-malarial drug used :)

Yes that is correct, improving accuracy could be using pH probes insrtead of universal indicator etc.

There is a thread somewhere for it here: http://community.boredofstudies.org/showthread.php?t=293167

ok so there is a stimulus (heat/sound/light etc), then receptors pick this up, then this message gets transferred to the CNS the CNS sends a response enacted by effector glands/muscles.