VCE Biology Question Thread

[vox nihili]

Acetyl CoA isn't covered in most textbooks, so I thought that was quite rough.

[heymanhru]

I left question 29 at the end and guessed D (guess I got it wrong) but I still don't get why and it's killing me, so can anyone explain this to me too?

Thanks

[katiesaliba]

Haha no, I highly doubt that. But if the wiki is correct, then technically answer C could be right too though couldn't it?

It's B because humans don't possess a sloping forehead and we have a chin. Furthermore, H.floresiensis were tiny and humans were already around 50 000 years ago It's just unlikely that modern humans were able to evolve from these dwarf creatures in 50 000 years.

Look no one had it worse than me today. OH DRAW A DIAGRAM? SURE PENCIL. MISTAKE? YES. RUBBER? MY SKIN. MOISTURE? MY SWEAT. (forgot my eraser at home)

Did those VCAA watcher people (LOL what are they called?) not have spare pencils and rubbers? My people did 

[heymanhru]

Did those VCAA watcher people (LOL what are they called?) not have spare pencils and rubbers? My people did 

Yea same here, they had like a whole shoe box lol

[MrsStark]

Yea same here, they had like a whole shoe box lol

they had everything! every timed i sniffed the slightest bit the lady gave me tissues LOL

[katiesaliba]

I left question 29 at the end and guessed D (guess I got it wrong) but I still don't get why and it's killing me, so can anyone explain this to me too?

Thanks

(Image removed from quote.)

I drew a cross to work this out.

Okay, so the parental genotypes are ttBb X TtBb, therefore:

    TB     Tb    tB     tb
tB TtBB  TtBb ttBB  ttBb
tb TtBb  Ttbb  ttBb  ttbb

Okay, so there are 6 diff. genotypes:
TtBB, TtBb, Ttbb, ttBB, ttBb, ttbb

And 4 diff. phenotypes.

[heymanhru]

I drew a cross to work this out.

Okay, so the parental genotypes are ttBb X TtBb, therefore:

    TB     Tb    tB     tb
tB TtBB  TtBb ttBB  ttBb
tb TtBb  Ttbb  ttBb  ttbb

Okay, so there are 6 diff. genotypes:
TtBB, TtBb, Ttbb, ttBB, ttBb, ttbb

And 4 diff. phenotypes.

Damn, I assumed it was a one of these type of crosses:



Should have read it properly 

[katiesaliba]

Damn, I assumed it was a one of these type of crosses:

(Image removed from quote.)

Should have read it properly 

It was! A dihybrid cross. I just did it the short way haha

[Reus]

Did those VCAA watcher people (LOL what are they called?) not have spare pencils and rubbers? My people did 

Apparently they ran out for the kids doing eco and psych yesterday ._.

I drew a cross to work this out.

Okay, so the parental genotypes are ttBb X TtBb, therefore:

    TB     Tb    tB     tb
tB TtBB  TtBb ttBB  ttBb
tb TtBb  Ttbb  ttBb  ttbb

Okay, so there are 6 diff. genotypes:
TtBB, TtBb, Ttbb, ttBB, ttBb, ttbb

And 4 diff. phenotypes.

Did the same; however I felt like it was too much working out for a MC question.

[katiesaliba]

Apparently they ran out for the kids doing eco and psych yesterday ._.
Did the same; however I felt like it was too much working out for a MC question.

Are you serious? omg ahaha that is actually so unlucky :\

I know right! And I initially interpreted my results incorrectly so I spent a good 5 minutes on those two questions. 

[heymanhru]

It was! A dihybrid cross. I just did it the short way haha

haha i meant that i thought both parents were heterozygous for both allele's which is incorrect as parent 2 is homozygous for height.

brb building time machine i get it now 

[katiesaliba]

haha i meant that i thought both parents were heterozygous for both allele's which is incorrect as parent 2 is homozygous for height.

brb building time machine i get it now 

Oh okay :') DW, we're all in the same boat! I had a mini anxiety attack during the exam because the questions really caught me off guard. I miss the straightforward questions!

[sparkyblossom]

Do you reckon we would get a mark taken off for correctly drawing the amino acid structure but not labelling the amine or the carboxyl group?

[gunsforhands]

Do you reckon we would get a mark taken off for correctly drawing the amino acid structure but not labelling the amine or the carboxyl group?

im not sure. i drew the correct structure but didn't label any parts of it because we never learnt that in class?? so im not sure what they'll do

[althepal]

Do you reckon we would get a mark taken off for correctly drawing the amino acid structure but not labelling the amine or the carboxyl group?

I'm pretty sure it said to draw labelled diagrams...but I honestly was so shocked that they put that in there I didn't even revise that because I thought it wasn't part of the study design :/