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For the reproductive technologies question in which is stated it limited genetic variation (6 marks), it said discuss. Does this mean you had to talk about for and against the statement?

Goodness gracious, that was the worst multiple choice I have ever done. And can I say a massive thank you to rand-althor who answered the 8 marker about the kidney one, in the biology marathon. What an absolute legend. I looked at it on monday morning and remembered it in the test.

Ozone can be classified polar as the donation of the electron pair (coordinate covalent bonding) from the central oxygen atom leaves a small positive charge on it. Therefore, the ozone molecule becomes a dipole and polar whereas diatomic oxygen is non-polar. Crisium is also right.

All of the notes I have all have different wavelengths for the same animal -.-

From what I was reading, I don't think they are. Random Segregation is when alleles create gametes, they segregate and each haploid gamete ends up with only one allele. As this is random, variation is inevitable. Independent Assortment is when genes on chromosomes sort independently as they...

What do you guys think will be the 6-8 marker in Communication?

I think you should have mentioned Edward Jenner he developed the vaccine.

When attacking the 7-8 markers, I've heard we should plan it out first, as in write in dot points first. Is anyone going to do this? Do you think it will be a waste of valuable time? Or should we just dive into the depths of tartarus head first, making it up as we go along.

I don't think Laveran showed it was plasmodium microorganism. He simply observed micororganisms in the blood of malarial patients. It was actually Ross who discovered it the Plasmodium protozoan.

I'm dreading if they ask about the tests used to detect heavy metals and eutrophication. That's torture at its finest.

A mutagen is an environmental factor that increases the rate of mutation - a change in DNA base sequence. Marie Curie forms a basis of evidence. Carrying uranium in her pockets, she was unaware of its disastrous effects and consequently died of leukemia. Furthermore people who reside in areas...

I hope so. I'm ded if they ask about the titanic and all those formulas. noooooooooooooo

I'm hoping there are not too many practicals. For me, the more theory the better. Anyway I reckon there will be something about the batteries (led acid, dry cell etc), evidence of oxides of sulfur and nitrogen, radioisotopes and their use in industry and medicine and many others. Is anyone...

Please. I'll start off. Outline some problems with diffusion and osmosis within the human body [3 marks]

What do you guys think will be in this years Biology paper? I reckon they will include: - quarantine - vaccination - phloem/xylem - beatle and tatum - evidence of theory of evolution Feel free to share your opinions. Oh and for communication. something about the eye. lol :rotfl:

Now for a question which I hate the most: A new non-infectious disease has been discovered in people in some aged care homes. Outline at least FOUR features of an epidemiological study that could be used to identify the cause of this disease. [4 marks]

Controls allow for the comparison of results, in such that they can be validated. It ensures the results are a product of the experimental conditions rather than any random condition that could have occurred.

Aren't we only supposed to choose one? I think it says in the syllabus "how one of the following..."?

I see. When answering these type of questions, is it necessary I state the composition of blood before it enters the organ? Or can I simply state the changes that occur after it has passes the organ?