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March 29, 2024, 04:07:09 pm

Author Topic: HSC Biology Question Thread  (Read 341578 times)  Share 

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Aaron12038488

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Re: Biology Question Thread
« Reply #645 on: July 19, 2017, 05:52:14 pm »
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can anybody clarify what EPOCH means. This is relating to an assessment on 'Life on Earth', for which I have to create an accurate geological timeline.

Potatohater

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Re: Biology Question Thread
« Reply #646 on: July 19, 2017, 06:33:27 pm »
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can anybody clarify what EPOCH means. This is relating to an assessment on 'Life on Earth', for which I have to create an accurate geological timeline.

This is part of the preliminary course right? It rings a bell but can't quite recall what it is.
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blasonduo

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Re: Biology Question Thread
« Reply #647 on: July 19, 2017, 06:39:30 pm »
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can anybody clarify what EPOCH means. This is relating to an assessment on 'Life on Earth', for which I have to create an accurate geological timeline.
This is part of the preliminary course right? It rings a bell but can't quite recall what it is.
Yes this is the prelim course. If you are looking for the definition, its particular period of time marked by distinctive events, which makes sense with the life on earth topic.
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bigsweetpotato2000

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Re: Biology Question Thread
« Reply #648 on: July 19, 2017, 10:27:35 pm »
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Really good question :)

It's captured under the limited resources heading. Resources can be limited by lowering the amount of resources OR by producing too many things trying to use all of those resources. In simpler terms, a big population (over-reproduction) makes the resources limited.

Ahhh- so it can sort of be treated as a sub heading :D
Okay thank you!

olr1999

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Re: Biology Question Thread
« Reply #649 on: July 20, 2017, 05:15:35 pm »
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I've stayed on top of my syllabus summaries all throughout year 12 and I'm wondering about any quick and easy way to remind myself of the content for namely MAB and BOL... thanks!

Potatohater

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Re: Biology Question Thread
« Reply #650 on: July 20, 2017, 09:09:25 pm »
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I've stayed on top of my syllabus summaries all throughout year 12 and I'm wondering about any quick and easy way to remind myself of the content for namely MAB and BOL... thanks!

To what extent do you need to recall information? I find that summing up the topics and the main ideas in them to a few words to trigger my recollection of information eg. MAB - enzymes, homeostasis, blood, kidneys, however you may need to go into more depth and try any other methods people suggest depending on how much you have trouble recalling the content
HSC 2017: Advanced English [85] General Maths [92] Biology [96] Geography [92] Drama [86]

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adelaidecruz

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Re: Biology Question Thread
« Reply #651 on: July 20, 2017, 09:23:34 pm »
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Hey guys, is it necessary to know the steps of deamination? Or just the gist of it?
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geminii

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Re: Biology Question Thread
« Reply #652 on: July 20, 2017, 09:30:39 pm »
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What are your best study tips for bio? Do you think it's best to start re-learning the content from now? There's about 2 months until trials!

I did Biology last year. By far my best study tip, which I found the most useful throughout the year is:

DON'T MEMORISE.

I tried to memorise everything in 1/2 (year 10 for me) because I couldn't be bothered to understand how the actual processes worked. That didn't turn out well - for my midyear (Unit 1) exam, I got 56%.
I tried to UNDERSTAND the processes from then on - why each step happens, and how it happens. Then I used to draw them in a notebook. For my Unit 2 exam, I got 80%, which was a huge improvement.

When I came to 3/4 Bio in Yr 11 last year, I made sure to understand all the processes rather than memorise them. You can't memorise everything in Bio - it's simply too content heavy. There's so much you would have to remember. So I just made sure I knew how to draw each process and explain the steps in each. And I came out with a pretty good study score :)

So overall, my best tip is UNDERSTAND, not MEMORISE.

Hope this helps!!
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pikachu975

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Re: Biology Question Thread
« Reply #653 on: July 21, 2017, 12:56:34 am »
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Hey guys, is it necessary to know the steps of deamination? Or just the gist of it?

Just know that it's the breakdown of amino acids

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Daniyahasan

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Re: Biology Question Thread
« Reply #654 on: July 22, 2017, 02:31:50 pm »
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So for the HSC do we still need to know premlim topics such as protein synthesis in detail
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maddiewainwright

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Re: Biology Question Thread
« Reply #655 on: July 22, 2017, 03:45:31 pm »
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So for the HSC do we still need to know premlim topics such as protein synthesis in detail

Hi Daniyahasan,
You definitely need to understand how polypeptides are formed by transcription and translation, and then understand that polypeptides are folded into proteins. If you need a brief overview of what steps are essential, and what enzymes you need to know, I've got an overview in the powerpoint slides I presented for lectures here!
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Daniyahasan

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Re: Biology Question Thread
« Reply #656 on: July 22, 2017, 04:16:25 pm »
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Hi Daniyahasan,
You definitely need to understand how polypeptides are formed by transcription and translation, and then understand that polypeptides are folded into proteins. If you need a brief overview of what steps are essential, and what enzymes you need to know, I've got an overview in the powerpoint slides I presented for lectures here!

Thank you Maddie, i came to your lecture it was really good :)
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arunasva

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Re: Biology Question Thread
« Reply #657 on: July 22, 2017, 07:08:28 pm »
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Hey can someone please help me with this ? What is the type of inheritance shown ? I can't differentiate between dominant and recessive inheritance by looking at the pedigree, please help.
:3

maddiewainwright

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Re: Biology Question Thread
« Reply #658 on: July 22, 2017, 07:22:14 pm »
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Hey can someone please help me with this ? What is the type of inheritance shown ? I can't differentiate between dominant and recessive inheritance by looking at the pedigree, please help.

Hi arunasva,

The trick for pedigree questions is to look at whether there are any traits which skip a generation (i.e. The parents aren't affected but the child is). We can see in this pedigree that A and B are not affected, but their child is. Therefore, the trait must be recessive, as the alleles have skipped a generation.
This means that the correct answer for that multiple choice is 25%, because if we construct the punnet square where both parents have recessive alleles, there is a 25% expression probability.
Hope this helps!
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pikachu975

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Re: Biology Question Thread
« Reply #659 on: July 22, 2017, 09:46:42 pm »
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Hey can someone please help me with this ? What is the type of inheritance shown ? I can't differentiate between dominant and recessive inheritance by looking at the pedigree, please help.

It's clearly not dominant because if you consider the trait as dominant, then at least one of A or B should have the trait, but none of them have it since it's not expressed. Hence they're both aa and aa so if you do a punnett square it's 25%

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