VCE Biology Exam Discussion and Solutions

[Pandable]

I'm not really sure what Pandable is trying to say because I said I chose the answer about bigger brains haha, because both culture and complex tool making needs a developed brain.

I didn't choose the "highly developed culture" answer because it didn't seem like you could confirm that it was "highly developed".

Well let me be clear, we already know they have big brains, but we previously thought they were culturally inferior, bigger brain does not necessarily=complex brain.

[PhoenixxFire]

Could 37 be B since it says yellow virus fever is transmitted by mosquitoes?

I thought about that. But it says primarily spread by mozzies not only spread by them. Also D is more right.

[vox nihili]

Would everyone prefer that I slowly trickled out the short answer questions one by one, or uploaded a document when I've completed them later tongiht (hopefully)?

Could 37 be B since it says yellow virus fever is transmitted by mosquitoes?

I thought about that. But it says primarily spread by mozzies not only spread by them. Also D is more right.

This was one I had to think about a bit. The most compelling reason for me is that we don't know whether other parts of Brazil have those mosquitoes do. In the absence of that info, we have to assume they do and that therefore when people travel there, they can be better by mosquitoes, loading those mosquitoes up to the virus, which then spread it to other people.

[PhoenixxFire]

Would everyone prefer that I slowly trickled out the short answer questions one by one, or uploaded a document when I've completed them later tongiht (hopefully)?

Whichever results in us getting them faster overall. thanks Vox!!

[PhoenixxFire]

guys so for question 2d) about the possible effects of phenolic acid, what was a good answer?? I made it up and said something about a substance produced that wasnt tasty for the caterpillar??

Thats what I said! I had no idea either

[Sine]

Re Q37

A and C are wrong for obvious reasons

B: The quesiton says "this outbreak was reported to be spreading to other areas of brazil" so people leaving and moving will faciliate the spread. - can go either way True/False
D: True

So go with most correct answer

[ardria]

I said phenolic acid made plants produce foul-tasting chemicals from leaves that repelled caterpillers from eating them

[NASA]

Depends on what exactly you wrote. Probably not. I knew straight away it was talking about exon splicing because I read it in another exam...there seemed to be lots of questions only slightly reworded from past exams.

can you say how different chaperone molecules in the different cells will fold the polypeptide differently into the teritary 3d shape, therfore the shape and function of the protein will change, and the protein will be different even though its the same gene

[Aar0n_101]

Would everyone prefer that I slowly trickled out the short answer questions one by one, or uploaded a document when I've completed them later tongiht (hopefully)?



This was one I had to think about a bit. The most compelling reason for me is that we don't know whether other parts of Brazil have those mosquitoes do. In the absence of that info, we have to assume they do and that therefore when people travel there, they can be better by mosquitoes, loading those mosquitoes up to the virus, which then spread it to other people.

Prefer that it be uploaded as a whole document, thanks brother

[NASA]

Depends on what exactly you wrote. Probably not. I knew straight away it was talking about exon splicing because I read it in another exam...there seemed to be lots of questions only slightly reworded from past exams.

can you say how different chaperone molecules in the different cells will fold the polypeptide differently into the teritary 3d shape, therfore the shape and function of the protein will change, and the protein will be different even though its the same gene

[waterangel82]

Thats what I said! I had no idea either

I said that the greater concentration of phenolic acid helped to activate genes which then produced a greater amount of protein products which were toxic to the caterpillars, so therefore they fed on mature leaves as they weren't so toxic.

[Bianca12345]

One document would be clearer I say! Thank you!

Would everyone prefer that I slowly trickled out the short answer questions one by one, or uploaded a document when I've completed them later tongiht (hopefully)?

[Sine]

can you say how different chaperone molecules in the different cells will fold the polypeptide differently into the teritary 3d shape, therfore the shape and function of the protein will change, and the protein will be different even though its the same gene

which question was this? from what I remember alternative splicing was the correct "most obvious" answer and VCAA usually love the simple answers. You could possibly still get marks for an alternative answer (depends on how the question was worded)

also wow never ever seen a 6 marker on a bio exam before iirc i genuinely thought the max they do is a 4 markers (or 5) (having seen all the exams from 1997-2016)

[vazi]

For 1c would different alleles work since it just says same gene, not DNA.

[waterangel82]

can you say how different chaperone molecules in the different cells will fold the polypeptide differently into the teritary 3d shape, therfore the shape and function of the protein will change, and the protein will be different even though its the same gene

Talking about very similar questions, I laughed silently when I saw that multi choice question 11 on animal cells being exposed to radioactive oxygen (so similar to the multi choice on plant cells being exposed to radioactive oxygen a few years ago)