VCE Biology Exam Discussion and Solutions

[JaeSunRyoo]

I'll be interested in how the examiners are going to respond to this. Will they accept both first/second line, as well as innate, or are they going to be nasty and go only for innate?

[LPadlan]

Aren't lysozymes also in our tears, which would then mean it acts as part of the first line of defence, as a chemical barrier?

Yes, you're right. Had a bit of a brain-blank there. Innate =natural, non specific

[sagisingareddy]

It was only mark, and the way it was asked, it seemed as if there was only one type of immunity they wanted in the answers...

¯\_(ツ)_/¯

ahh dw, if u feel bad think abt how i lost marks on the first question which i wrote that the small hydrophobic substance doesnt need a carrier
 

[Wendles278]

ahh dw, if u feel bad think abt how i lost marks on the first question which i wrote that the small hydrophobic substance doesnt need a carrier
 

Wait wouldn't it be the other way around as hydrophillic substances would be repelled by the hydrophobic fatty acids tail hence they need a protein channel. Whereas hydrophobic substances simiplying under diffusion.

[vox nihili]

Wait wouldn't it be the other way around as hydrophillic substances would be repelled by the hydrophobic fatty acids tail hence they need a protein channel. Whereas hydrophobic substances simiplying under diffusion.

You’re correct

[vox nihili]

If I can get access to a copy of the exam I’ll do some answers for you guys ASAP

[LifeisaConstantStruggle]

at least we're done I guess..?

[vox nihili]

Can confirm answers will be up tonight

[JaeSunRyoo]

\o/

Our champion vox

[Zaljc]

What about the six marker question with the megafauna? What did everybody write for that?

Also, if I said innate immune response but then added (the second line of defence) in brackets, would I still get a mark for that? Because technically lysosomes aren’t part of the second line of defence but I did say innate

[KANYEWEST]

can someone get me up to track with the Innate response question, i cant recall what question that was!

[LifeisaConstantStruggle]

What about the six marker question with the megafauna? What did everybody write for that?

Also, if I said innate immune response but then added (the second line of defence) in brackets, would I still get a mark for that? Because technically lysosomes aren’t part of the second line of defence but I did say innate

Absence of the fire plants and stuff
Coexisted for a long ass time
And small aboriginal population.
My bio terminologies are weird after the exam cuz I cbs doing it in detail HAHAHAHA

[jaronmak]

What about the six marker question with the megafauna? What did everybody write for that?

For this question, the three pieces of evidence I used were:
 - Aboriginal populations were small, so it is unlikely they could have caused significant damage to habitats and thus would likely not have caused mass extinctions
- The wombat mammal thing not dying until 33,000 years after or whatever; evidence that the First Aboriginals and some animal species were able to coexist peacefully, therefore mass extinction may not have been due to the First Aboriginals
- No evidence of fire-sensitive plants experiencing a genetic bottleneck; further evidence to support the fact that the First Aboriginals didn't necessarily burn the entire landscape and completely destroy habitats

It was a pretty weird question in my opinion, I wasn't really sure how they were expecting it to be answered so I just wrote that 😕

[PhoenixxFire]

Absence of the fire plants and stuff
Coexisted for a long ass time
And small aboriginal population.
My bio terminologies are weird after the exam cuz I cbs doing it in detail HAHAHAHA

Now I feel a little better that's what I wrote too. I'm so pissed about that and like 4/5 pages of experimental design. I knew there would be a lot but that's crazy. So many things they could have assessed.

[Zaljc]

Would 45 megafauna already being extinct and megafauna was already declining in numbers before first Australians came to Australia be two distinct answers or are they kind of similar?