gloworm14 said:ok here is a random question:
firstly, define what a transgenic speices is.
then
outline the process used to produce transgenic species. include an example and reason for its use.
now gogogogogo!
YAY GO 2S1D3 you rock LOL.2S1D3 said:Salmon: - have been inserted with the BGH hormone that produces faster and larger fish.
- This provides food to many countries with salmon as their staple diet, thus providing food to a large number of people without adversely affecting salmon population.
Method:- a fertilised egg is removed from an organism and a particular gene is inserted, e.g. larger stature.
-A molecular vehicle is combined with the required gene and this combination is known as a transgene.
-The transgene is placed into the fertilised egg and this is allowed to develop in a mother, if this process has been executed correctly, a transgenic organism is resulted.
Describe the contribution of Pasteur and Koch to our understanding of infectious diseases.
1st was 96% in the independent papergloworm14 said:just curious, what was the highest mark in your class's bio trial?
imqt said:in phloem both passive and active...water, which contains dissolves sugars enters tthe phloam via osmosis, however the rest is active as sugars are deposited at source sinks against diffusion gradient
sam2100 said:i totally agree that both active and passive transport are used but i have the exact opposite understanding of the source-sink theorem
I was taught:
at the source (ie a leaf): glucose is converted to sucrose and loaded by ACTIVE transport into the phloem vessel (tube)
this increases the solute concentration in the phloem (because sugars entering constantly due to active transport) causing the water to flow in passively by osmosis, creating high turgor pressure.
sugar sink: where the supply of sucrose is low and the turgor pressure is also low
thus the high pressure at the sugar source causes the sugar to flow from source to sink by passive transport
please tell me if this is incorrect and why
p.s. where did you apply for pharmacy, ur goals for post hsc are like identical to mine
came first with 88%Takuto said:1st was 96% in the independent paper
2nd was 90.5%
how about yours?
(done before, il go over it roughly)bekmay said:hey PEEPS what do we know about artificial blood??
i really don't know much at all =[
help me =]
sam2100 said:UNSW USyd is too intimidating, does it need stat?
sweet, coz i read urs and was like omgwat has my teacher been smoking?!
sigh i just want this bio to be over and done with already.
LOL hahaha!gloworm14 said:came first with 88%
lolz
only 2 people got into the 80s range LOL
my class is not really that great.
once a girl asked how to spell DNA. rofl!
I wrote down sam2100's cause it sounded very detailed.imqt said:someone go over how phloem is both passive and active transport...i think ive confused myself now
haha and i am the other 10%. bio is hard for me i don't get a lot of it LOL.jozza80 said:I wrote down sam2100's cause it sounded very detailed.
My notes came from examplar answer from 2002 exam paper:
There are three main stages:
1. Movement from source into the phloem, usually against a concentration gradient, thus active transport is needed;
2. Movement in the phloem due to the pressure from the source and hydrostatic pressure;
3. Unloading from the phloem to the sink again needed active transport, expending cellular energy.
This movement of materials in the phloem is called translocation..
Dunno if it helps you, but.. hmmmm... not 100% on this either!
Haha.. I will agree with 90% of people in this thread being top of their game!!
imqt said:lolllllll my teachers not so great,
pharmacy in UNSW??? i thought its only only offered at USyd ? and yeh it needs stat
sam2100 said:gah my bad, i HAVE applied at usyd, got it confused with my unsw optometry (pharmacy is my 2nd preference incase i bomb stat)
jozza80 said:I wrote down sam2100's cause it sounded very detailed.
My notes came from examplar answer from 2002 exam paper:
There are three main stages:
1. Movement from source into the phloem, usually against a concentration gradient, thus active transport is needed;
2. Movement in the phloem due to the pressure from the source and hydrostatic pressure;
3. Unloading from the phloem to the sink again needed active transport, expending cellular energy.
This movement of materials in the phloem is called translocation..
Dunno if it helps you, but.. hmmmm... not 100% on this either!
Haha.. I will agree with 90% of people in this thread being top of their game!!
imqt said:ah ok, so you havent done stat yet ? i thought i was gonna bomb it