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March 28, 2024, 09:07:36 pm

Author Topic: 2020 Biology Exam  (Read 36206 times)

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benauer03

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Re: 2020 Biology Exam
« Reply #120 on: November 16, 2020, 07:49:36 pm »
Do any of you guys have an idea of what kind of exam score correlates to an approx SS?

I would recommend looking at the TWM Publications website (here) which has exam score to study score prediction graphs, calculated based on the annual grade distributions and the normal distribution VCAA uses for study scores.

Alternatively you could try keltingmeith's new study score calculator here; which I believe operates on a similar principle.

Or one more option is to use the mean and standard deviation on the actual grade distribution reports. If you assume they're normally distributed you can choose a study score (e.g. 44 SS), figure out how many standard deviations from the mean it is (2 in this case), and then calculate an exam score which is the same amount of standard deviations from the mean (which according to the 2019 grade distribution would be roughly 90% for 44). Hopefully that's helpful.
« Last Edit: November 16, 2020, 07:52:08 pm by benauer03 »

adgh124

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Re: 2020 Biology Exam
« Reply #121 on: November 17, 2020, 05:57:43 pm »
what did you guys put for that multiple choice question with the B and T cells having something in common?

failingenglish

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Re: 2020 Biology Exam
« Reply #122 on: November 17, 2020, 06:02:37 pm »
what did you guys put for that multiple choice question with the B and T cells having something in common?
was it not that they both had immunological memory or something i think it was A

adgh124

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Re: 2020 Biology Exam
« Reply #123 on: November 17, 2020, 06:14:34 pm »
ohh but plasma B cells and cytotoxic T cells don't have immunological memory ?

failingenglish

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Re: 2020 Biology Exam
« Reply #124 on: November 17, 2020, 06:25:50 pm »
ohh but plasma B cells and cytotoxic T cells don't have immunological memory ?
LMAO guess i read it wrong, i just took it as being the adaptive immune system so it was like memory ? but i cant even remember the question at all sorry :/

donkey man

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Re: 2020 Biology Exam
« Reply #125 on: November 17, 2020, 09:00:32 pm »
LMAO guess i read it wrong, i just took it as being the adaptive immune system so it was like memory ? but i cant even remember the question at all sorry :/
nah ur right. It was the only one that made sense. Since it is talking about B and T cells as a whole, immunological memory makes sense.

ezdebebe

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Re: 2020 Biology Exam
« Reply #126 on: November 18, 2020, 04:02:33 pm »
what do you think will be the A+ cut-off for this years exam?
2020: Biology [39]
2021: English [~44+], Methods [~43+], Specialists [~36+], Chemistry [~44+], Philosophy [40+]
ATAR: ~99+

Flybird123

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Re: 2020 Biology Exam
« Reply #127 on: November 18, 2020, 04:21:51 pm »
what do you think will be the A+ cut-off for this years exam?
idk my school's a+ is 91%

homeworkisapotato

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Re: 2020 Biology Exam
« Reply #128 on: November 18, 2020, 04:31:12 pm »
Hey! For the temperature question, was it okay to not put that decreased temperature results in a slower enzyme activity if you put that the optimal temperature has the highest rate of enzyme substrate collisions?
Also for labelling Y in 4ai I put nucleus instead of nuclear membrane.. do you think that's accepted as well?
2020: Biology [43]
2021: Methods, Chemistry, HHD, English, Further
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ezdebebe

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Re: 2020 Biology Exam
« Reply #129 on: November 18, 2020, 04:45:33 pm »
idk my school's a+ is 91%

What do u mean ur schools A+ was a 91%?
2020: Biology [39]
2021: English [~44+], Methods [~43+], Specialists [~36+], Chemistry [~44+], Philosophy [40+]
ATAR: ~99+

ezdebebe

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Re: 2020 Biology Exam
« Reply #130 on: November 18, 2020, 04:52:22 pm »
Hey! For the temperature question, was it okay to not put that decreased temperature results in a slower enzyme activity if you put that the optimal temperature has the highest rate of enzyme substrate collisions?
Also for labelling Y in 4ai I put nucleus instead of nuclear membrane.. do you think that's accepted as well?
I think their gonna be harsh so for 4aii, I think you'd have needed to say nuclear membrane instead of just the nucleus.
For the temperature question, I said the same thing as you and I feel as if that should be fine, though my teacher has said that you shouldn't imply anything in your answers, which is what we have done.
2020: Biology [39]
2021: English [~44+], Methods [~43+], Specialists [~36+], Chemistry [~44+], Philosophy [40+]
ATAR: ~99+

Flybird123

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Re: 2020 Biology Exam
« Reply #131 on: November 18, 2020, 05:04:08 pm »
What do u mean ur schools A+ was a 91%?
if we get 91% or above our school give us a+

Bri MT

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Re: 2020 Biology Exam
« Reply #132 on: November 18, 2020, 05:27:10 pm »
if we get 91% or above our school give us a+

For the external exams the A+ or other grade you'll see on your statement of results is based on how well you did compared to other students on the exam. Like how a study score is based on your relative performance. VCAA releases the grade cut-offs ones from past years (look up the graded distributions if you're interested). VCAA's grade cut-offs get applied to every student taking that subject's exam in that year.
« Last Edit: November 19, 2020, 02:14:22 pm by Bri MT »

THO0088

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Re: 2020 Biology Exam
« Reply #133 on: November 18, 2020, 05:56:26 pm »
was it not that they both had immunological memory or something i think it was A

But T-memory cells aren't in our study design? that's what my school had told us but now I'm not sure
2020 - Biology [50]
2021 - atar 99.6

homeworkisapotato

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Re: 2020 Biology Exam
« Reply #134 on: November 18, 2020, 06:42:36 pm »
I think I lost 8-10 marks on the exams...have I kissed my chance of a 40+ study score goodbye?
2020: Biology [43]
2021: Methods, Chemistry, HHD, English, Further
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