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wow i didnt know that haemoglobin came about by evolution...well silly relly, considering all structures in the body came about by evolution! ya, maybe in that evolutioanary sense, haemoglobin has an adaptive advantage. thanks again ;)

thanks for the info... um, we are supposed to know different relative dating techniques.. i think anyway

well considering there ARE 8 topics in this course, its nothing surprising at all... that's the way marks should be (theoretically) divided anyway -15 for each topic :D

hey guys, something concrete and not syllabussy. a question i am having trouble with. arnold book ex 7.2 4b. A particle of mass m falls from rest under gravity and the resistance to its motion is mkv^2, where v is its speed and k is a positive constant. a) show that v^2 =g/k(1 - e^-2kx)...

hehe... are the sub-questions linked or is it just an unlinked one-question-after-another onslaught? :D

hi guys, i would appreciate if you could explain how index fossils can be used to relatively date different rock layers and fossils. also, what other relative dating techniques are there?? thanks heaps. :D

im glad you're such an efficient student. good for you. thanks for the discussion anyway.

if you take a look at page 56 of the extension 2 syllabus, that should solve all your worries. :)

im not quite sure what uve said. ive written what i think is correct using your wording. this is my reply to your post: "even if you didn't rotate it, one would go across the wind and the other would go with it but go against it when it comes back." what do you think? any ideas about why they...

adaptive advantage thanks xiao. but what do u mean when u say "included in blood cell (not upsetting osmotic balance)"? also, i understand what uve written are four advantages of haemoglobin. what does the syllabus mean by ADAPTIVE advantage though??? also, since the dot point only...

i fully understand what you mean when you say that one needs to know fundamental transformations and methods of integration and formulae that are in 3 unit to do problems in 4 unit. after all, it is an EXTENSION of three unit. i also understand what u mean when u say resisted motion is a...

i wasn't talking about whether we needed 3 unit to do 4 unit mechanics or not... i was just wondering what key concepts had to be known by students at the end of the mechanics module since our teacher - like i mentioned previously - did not do a very good job of letting us know what we...

hi all, we have just been taught mechanics before the school holidays, well not really taught considering a wad of exercise sheets and questions were simply dumped in front of our faces without much theory at all. newayz, so i am having considerable difficulty dealing with what we are...

anyone pls shed some light on this highly confusing terminology "adaptive advantage". is it talking about haemoglobin able to retain more oxygen once it has bonded with the first oxygen molecule (sigmasoidal curve shape). or is it talking about how it is better than oxygen transported as...

i think u should replication and (transcription, translation) as separate entities for the purpose of this course. whilst replication is related to just producing copies of the same sequence for cell division and so on, transcription and translation are a part of protein synthesis. they do not...

Evolutionary Significance! ok, were getting a bit sidetracked. partially my fault. assess the evolutionary significance of polymorphism in human species today. would that mean say things like more melanin for people in hot areas is good for protection and less for people in cold areas is...

i think so

thanks for your thoughts. um, if you go to focus idea 5 in the human story and the right hand column, there is something about evolutionary significance. especially since the keyword used is assess, i got a bit concerned about what they actually meant when they said evolutionary significance.

i prefer exams over modelling and reports...

hi there just wanted to clear something up... in focus ideas 4 and 5 there are a few dotpoints that talk about evolutionary significance of this and evolutionary significance of that.,... what exxactly do they mean when they say assess the evolutionary significance? do they mean what...