Biology Exam Chat + Exam Copy + Answers (now)

[banditkeith]

Sorry for the delay guys! I know everyone is really keen to see our version of the solutions - rest assured we are working on them but have been very busy with other things and haven't quite been able to finish them according to schedule.

Lol, dw too much about it. It's the weekend and none of us have any exams tomorrow or the day after. I'm sure we can wait a little while longer n_n

^This. I don't know why people are so eager for the solutions. It's not like you can actually change anything by reading them.
Besides, it's your time that we are taking to get the solutions so yeah.. Take your time!

[simpak]

If it helps, after skimming, I think I agree with all of Bazza and Panicmode's answers, but that probably doesn't really help.
I NEED TO STOP PROCRASTINATING.

[Panicmode]

If it helps, after skimming, I think I agree with all of Bazza and Panicmode's answers, but that probably doesn't really help.
I NEED TO STOP PROCRASTINATING.

Lol, everyone knows the feeling.

[scocliffe09]

Sorry for the delay guys! I know everyone is really keen to see our version of the solutions - rest assured we are working on them but have been very busy with other things and haven't quite been able to finish them according to schedule.

without sounding rude, how long do you reckon it might take?

Still going...

[scocliffe09]

Sorry for the delay guys! I know everyone is really keen to see our version of the solutions - rest assured we are working on them but have been very busy with other things and haven't quite been able to finish them according to schedule.

without sounding rude, how long do you reckon it might take?

Still going...

Ok I've finished everything except q5, which I will have a look at tomorrow. Lex will upload them once he wakes up.

[Russ]

Restriction enzymes question, i answered that because it was a substitution mutation the allele for normal and mutated will be the same length. Thus will appear as the same band pattern on Gel Electrophoresis and you wouldnt be able to identify between them.
However, another dodgy question. What if the restriction enzyme cut at the sequence that was changed, this would cause one to cut to different sizes and the other allele to not.
Again. VCAA.

One base pair is not gonna make a noticeable change. Your answer was correct.

If the RE digestion site included the point mutation then it would produce different amounts of fragments and would be very detectable, so it's slightly ambiguous. That said, that's a fairly unlikely situation, so the answer is likely to be that using restriction enzymes would still produce similar bands

[nelsonzhang]

fkn Q1 ambiguous piece of shit, i thought u can only choose from the 2 structures given, and i chose ribosomes cause rna polymerase is an enzyme(protein) so it'd be synthesised there =S, FFFFFFFFFUUUUUUUUUUUUUUUU

[LukeMcA]

Yeah it was such a vague, ambiguous question. I have a feeling VCAA may be awarding marks to everyone for that question. It was no specific enough.

[lexitu]

I have uploaded all of the questions except for question 5 which we will look to complete soon. Massive thank you to Edward, who after end of Medicine exam celebrations stayed up till 5am to work on the answers

2011 VCAA Biology Unit 4 exam answers can be found here.

I will make another page and get Russ (or another mod) to sticky it once the complete set are up!

Thank you for your patience and understanding

[TheEscapist]

Thankyou! Would be interesting to see whats your thoughts on question 5 soon as well.

[LukeMcA]

For 2) ii) & iii)

I understand that ii) is Bb x bb

But for question 2iii). The test cross you did with the punnet square is Bb x Bb? It's supposed to be Bb x bb. (Isn't it..)?

[TheEscapist]

Question 2aiii)
The parents are Bb (yellow) and bb (blue) as stated in your answer previously, but in the cross you have them as both heterozygous? Am i missing something or just a little blunder...Would hate to lose something for misreading.

[LukeMcA]

Question 2aiii)
The parents are Bb (yellow) and bb (blue) as stated in your answer previously, but in the cross you have them as both heterozygous? Am i missing something or just a little blunder...Would hate to lose something for misreading.

I noticed the same error.

[Callum]

for 6 cii) i wrote about introducing some kansas/nebraska chickens to increase genetic diversity in illnois pop? as all pops are same species

I did this too?

Also thanks to everyone who put the exam answers together.

[lexitu]

for 6 cii) i wrote about introducing some kansas/nebraska chickens to increase genetic diversity in illnois pop? as all pops are same species


+ do you think there's a chance of acceptingn "structure M" due to ambigous nature of the q?

Yes that's fine - fits under introducing a breeding program.

Personally I think the chief assessor will either award everyone a mark, or, accept nucleus or structure.

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And yes - there is a small error - we will update this in our next version of answers. Thank you for pointing it out