Biology Exam: Answers and Discussion!

[nerdmmb]

Tough to say, I think they'll give one mark for saying 270 nucleotides = 90 amino acids, and one mark for saying there would be 273 nucleotides total as you have to account for the stop codon, which doesn't code for an amino acid (the start codon does however, so that's part of the 90 amino acid chain).

Wasn't one mark allocated for the number of nucleotides and one mark for the explanation?

Either way, I hope they give us atleast one mark

[shivaji]

Wasn't one mark allocated for the number of nucleotides and one mark for the explanation?

Either way, I hope they give us atleast one mark

i reckon they will accept a wide variety of answers for this (like within 270,273,276 range)

[2NE1]

mmm i don't know..that's what our teacher taught us. She reckons the answer is bottleneck (natural disaster). I mean why else would the new population conincidently only have the homozygous recessive genotype. It's not like they somehow all migrated and didn't let anyone else go with a different genotype. Wikepedia says that the bottleneck can cause the founder effect even though it's not strictly a new population

Did Bio last year and the answer is definitely migration because it specifically says "founder effect" and although a natural disaster can account for what is happening in the diagram, migration is more correct as founder effect implies that those group of organisms have MOVED, reducing the allele pool.

[Reus]

i reckon they will accept a wide variety of answers for this (like within 270,273,276 range)

I feel like they'll purposely won't hahaha

[TimewaveZero]

Hey guys, I know you don't like people asking these questions, but I'm just curious. I have around 85% SAC average and I'd probably be in the 5-10 rank range (out of about 50), and I think I'll probably pull of around a 90% on the exam. Do you think this will be enough to get me to a 40 SS?

[Reus]

Hey guys, I know you don't like people asking these questions, but I'm just curious. I have around 85% SAC average and I'd probably be in the 5-10 rank range (out of about 50), and I think I'll probably pull of around a 90% on the exam. Do you think this will be enough to get me to a 40 SS?

Considering the exam was much harder this year, yas.

[TimewaveZero]

Considering the exam was much harder this year, yas.

Ahh that's good to hear haha

[2NE1]

Hey guys, I know you don't like people asking these questions, but I'm just curious. I have around 85% SAC average and I'd probably be in the 5-10 rank range (out of about 50), and I think I'll probably pull of around a 90% on the exam. Do you think this will be enough to get me to a 40 SS?

94% so around 103/110 was already high 40s last year
so if you got 90% you should be mid-high 40s this year

[nerdmmb]

94% so around 103/110 was already high 40s last year
so if you got 90% you should be mid-high 40s this year

What would a 85-90% equate to?

[2NE1]

What would a 85-90% equate to?

It is hard to say because it depends on your cohort and sac marks, some girls from my school got A+ like 85-87% and got under 40 because their Sac marks pulled them down.

[2NE1]

How many marks can you approximately lose to get a 40 raw?

Given that your SAC avg is around 90%

I would say lose no more than around 15 marks on the exam because thats 95/110 and 86% ish.

[Damo23]

On the topic of studyscores, what would I have to get on the exam to get a studyscore of 35 or 40?(sac avg 84%). I know how the grading changes, but around about what would get me a 35?

[dankfrank420]

On the topic of studyscores, what would I have to get on the exam to get a studyscore of 35 or 40?(sac avg 84%). I know how the grading changes, but around about what would get me a 35?

It's pretty useless discussing raw, unmoderated SAC scores. After all, all schools sit different level of SACs so an 70% in one school may be a 95% in another. There's really no point basing study scores on your SAC marks.

However, for the exam it's a fair bit easier. To get a 35, you need to be in the top 25% which last year was around the low 80 mark range. Condsidering this year was a little harder, I'd say you can get a 35 if you got between 77-80 marks.

For a 40, last year was 93 so for this year I'd say a 87-89.

[langfordlm]

are there answers to the Short Answer? so keen to find out

[Reus]

are there answers to the Short Answer? so keen to find out

The download is on the OP.
2014 VCE Biology Exam Solutions by Scooby