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March 28, 2024, 08:49:57 pm

Author Topic: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions  (Read 80743 times)

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cookielife

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #60 on: November 01, 2019, 06:34:55 pm »
0
Lots on sources of error. Was expecting more like 'What is a suitable hypothesis for this experiment?' like question.

PhoenixxFire

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #61 on: November 01, 2019, 06:36:50 pm »
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Hey
What was question 11? Experimental design?
I'm missing that question and the end of question 10 i think. I can try and get a copy of it if you'd like solutions for it but I haven't seen any discussion on it so I dunno if that means y'all just found it really easy?

We're just about done with the rest of the solutions btw.
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ssillyssnakes

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #62 on: November 01, 2019, 06:51:23 pm »
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Hey
What was question 11? Experimental design?
I'm missing that question and the end of question 10 i think. I can try and get a copy of it if you'd like solutions for it but I haven't seen any discussion on it so I dunno if that means y'all just found it really easy?

We're just about done with the rest of the solutions btw.
Oh no for me question 11 was the worst by far. It was like 8 marks on different sources of errors and I bs'ed the whole thing
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cookielife

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #63 on: November 01, 2019, 06:52:53 pm »
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Hey
What was question 11? Experimental design?
I'm missing that question and the end of question 10 i think. I can try and get a copy of it if you'd like solutions for it but I haven't seen any discussion on it so I dunno if that means y'all just found it really easy?

We're just about done with the rest of the solutions btw.


Yes please! Please get solutions for Question 10 and 11 too! And yes question 11 was experimental design. Vague memory, but as far as I can remember it was something about lipase and enzyme activity and turning the alkaline solution neutral.

cookielife

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #64 on: November 01, 2019, 06:57:18 pm »
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For the thunderstorm asthma question, was the name of the cell- mast cell, and name of the protein- IgE antibody?

PhoenixxFire

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #65 on: November 01, 2019, 07:03:37 pm »
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Oh no for me question 11 was the worst by far. It was like 8 marks on different sources of errors and I bs'ed the whole thing

Yes please! Please get solutions for Question 10 and 11 too! And yes question 11 was experimental design. Vague memory, but as far as I can remember it was something about lipase and enzyme activity and turning the alkaline solution neutral.
Doing them now. Will post all the answers soon.
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cookielife

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #66 on: November 01, 2019, 07:06:46 pm »
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what did people put for what occurred  to lead to the preservation of the animal from when the steppe Bisson died to when it was frozen? (4 marks)
My worst question :( :(. Said something bout how animal is in cold temps. Body freezes. And how soft body parts also fossilise and bs'd that whole thing. Sad life.
« Last Edit: November 01, 2019, 07:14:11 pm by cookielife »

pugs

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #67 on: November 01, 2019, 07:08:59 pm »
+2
For the thunderstorm asthma question, was the name of the cell- mast cell, and name of the protein- IgE antibody?
oh no
would i have gotten any marks for B cell & antibody? because allergens bind to b cells to produce antibodies which then attach to mast cells :ll


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Genshai

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #68 on: November 01, 2019, 07:18:34 pm »
+1
oh no
would i have gotten any marks for B cell & antibody? because allergens bind to b cells to produce antibodies which then attach to mast cells :ll

i had the same answer T_T hopefully we got marks for it
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Amnilauv

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #69 on: November 01, 2019, 07:20:11 pm »
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My worst question :( :(. Said something bout how animal is in cold temps. Body freezes. And how soft body parts also fossilise and bs'd that whole thing. Sad life.
The questions was, in my opinion, just outlining the steps of fossilation. I'd assume you'd have to state somewhere that the carcass has to be undisturbed (as in no predation or any natural occurrences affecting its position).

oh no
would i have gotten any marks for B cell & antibody? because allergens bind to b cells to produce antibodies which then attach to mast cells :ll
What did the question ask specifically? I can't remember, but I think the appropriate answer was mast cells. I'm not too sure whether just antibodies would even be accepted (specifically, it should be IGE antibodies), but from recent exam reports, VCAA hasn't been extremely pedantic.

_echolab

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #70 on: November 01, 2019, 07:36:07 pm »
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The questions was, in my opinion, just outlining the steps of fossilation. I'd assume you'd have to state somewhere that the carcass has to be undisturbed (as in no predation or any natural occurrences affecting its position).

Is there a difference between fossilisation and preservation of of corpse? I thought it could be about flash freezing or mummification, because fossilisation doesn't preserve the original body, but neither of the other options were on the study design.

cookielife

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #71 on: November 01, 2019, 07:59:25 pm »
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Quote
What did the question ask specifically? I can't remember, but I think the appropriate answer was mast cells. I'm not too sure whether just antibodies would even be accepted (specifically, it should be IGE antibodies), but from recent exam reports, VCAA hasn't been extremely pedantic.
The question asked for what is the name of the cell and protein that the allergen interacts with? That's what I remember but might be wrong. :-\

3086

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #72 on: November 01, 2019, 08:07:39 pm »
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Is it fine if you just wrote IgE?
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Jashy

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #73 on: November 01, 2019, 08:09:22 pm »
+1
Is it fine if you just wrote IgE?

yes that is totally fine.
flunked!!!

cookielife

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #74 on: November 01, 2019, 08:13:45 pm »
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For the photosynthesis question, why was there high O2 conc. when the plant was photosynthesising in Region  R(stroma) than when plant was not photosynthesising. Doesn't the splitting of H2O occur in thylakoid membranes to form O2 in light dependant stage? Then, how can O2 be in stroma?