Welcome, Guest. Please login or register.

October 21, 2019, 01:39:16 am

Author Topic: VCE Biology Question Thread  (Read 1385006 times)  Share 

0 Members and 14 Guests are viewing this topic.

Biology24123

  • Forum Leader
  • ****
  • Posts: 536
  • Respect: +1
  • School: Scopus
Re: VCE Biology Question Thread
« Reply #6765 on: October 25, 2015, 11:03:40 pm »
0
(CSE 2014 test)
The answer for this question is B.
But I thought only nucleated cells, not bacteria,  have MHC class 1 markers? Or am i mistaken.  :(

(Image removed from quote.)

I also just did this exam and said D

Acid

  • Victorian
  • Forum Regular
  • **
  • Posts: 50
  • Respect: 0
  • School Grad Year: 2015
Re: VCE Biology Question Thread
« Reply #6766 on: October 26, 2015, 01:39:51 pm »
0
Is option B correct because only two kinds of rockress can undergo meiosis since the're diploid? So why is C incorrect? Could someone please clarify this? Thanks!
2015: English [50]
ATAR: 97.90
2016: BSci @ Monash

warya

  • Victorian
  • Forum Obsessive
  • ***
  • Posts: 392
  • Respect: +13
Re: VCE Biology Question Thread
« Reply #6767 on: October 26, 2015, 03:06:50 pm »
0
Is option B correct because only two kinds of rockress can undergo meiosis since the're diploid? So why is C incorrect? Could someone please clarify this? Thanks!

All the cells are diploid, the problem is, the odd numbered diploid cells cannot produce fertile gametes/reproduce by seed i.e. they cannot produce haploid cells because you cant divide an odd number by 2.
http://i.imgur.com/VK9S9ET.gif

20162018: Bachelor of Biomedical Science, Monash University
20192022: Doctor of Medicine, The University of Melbourne

Acid

  • Victorian
  • Forum Regular
  • **
  • Posts: 50
  • Respect: 0
  • School Grad Year: 2015
Re: VCE Biology Question Thread
« Reply #6768 on: October 26, 2015, 04:08:49 pm »
0
All the cells are diploid, the problem is, the odd numbered diploid cells cannot produce fertile gametes/reproduce by seed i.e. they cannot produce haploid cells because you cant divide an odd number by 2.

Yup, I understand that, but why is option C incorrect? Aren't organisms with odd number of chromosomes usually haploid? Or can we assume they're a product of non-disjuction?

Thanks!
2015: English [50]
ATAR: 97.90
2016: BSci @ Monash

cosine

  • Victorian
  • ATAR Notes Legend
  • *******
  • Posts: 3042
  • Respect: +268
Re: VCE Biology Question Thread
« Reply #6769 on: October 26, 2015, 04:14:43 pm »
0
How exactly do two identical twins form? Does the same egg/sperm get fertilised by the same gamete?
2016-2019: Bachelor of Biomedicine
2015: VCE (ATAR: 94.85)

sunshine98

  • Guest
Re: VCE Biology Question Thread
« Reply #6770 on: October 26, 2015, 04:18:03 pm »
0
How exactly do two identical twins form? Does the same egg/sperm get fertilised by the same gamete?
No , one fertilised egg splits to form two babies with the same genetic material.

cosine

  • Victorian
  • ATAR Notes Legend
  • *******
  • Posts: 3042
  • Respect: +268
Re: VCE Biology Question Thread
« Reply #6771 on: October 26, 2015, 06:22:45 pm »
0
Few questions about hominin evolution:

1. I understand the two theories now, thankfully... But for the Out-of-Africa theory, it says that modern humans evolved INSIDE Africa, and then dispersed around the world in waves. So, that means that transitional fossils of modern humans must ONLY be found inside africa, right?

But a statement in my book said that Homo erectus migrated from Africa into Europe.. Does this mean that Homo erectus is not an ancestor of modern humans?

When it says transitional fossils, it means that the direct ancestors of humans, right? Like the very hominin species that modern humans evolved from were only in Africa?

2016-2019: Bachelor of Biomedicine
2015: VCE (ATAR: 94.85)

CarterGray12

  • Victorian
  • Adventurer
  • *
  • Posts: 18
  • Respect: 0
  • School Grad Year: 2016
Re: VCE Biology Question Thread
« Reply #6772 on: October 26, 2015, 06:39:27 pm »
0
Hey everyone, I'm struggling a bit with the trends in evolution from Australopithecus to Homo Sapiens, can anyone give me some bullet points on the general trends?
Also, what feature define Hominoids?

Thanks in advance
2015: Biology
2016: English | Methods | French | Chemistry | UMEP Biology

Biology24123

  • Forum Leader
  • ****
  • Posts: 536
  • Respect: +1
  • School: Scopus
Re: VCE Biology Question Thread
« Reply #6773 on: October 26, 2015, 06:43:56 pm »
+1
Hey everyone, I'm struggling a bit with the trends in evolution from Australopithecus to Homo Sapiens, can anyone give me some bullet points on the general trends?
Also, what feature define Hominoids?

Thanks in advance

Decreased eye ridge
Increased brain case
Face becomes less sloped
Spine becomes S shaped
More central Foramum Magnum
Pelvis is more narrow



sushibun

  • Victorian
  • Adventurer
  • *
  • Posts: 22
  • Respect: 0
Re: VCE Biology Question Thread
« Reply #6774 on: October 26, 2015, 06:54:52 pm »
0
Hi Guys,
I was wondering whether a question like the one I've attached below could possibly be on an exam?
Or if the theory behind this question outside the study design?
Thanks :)

KingDrogba

  • Victorian
  • Forum Regular
  • **
  • Posts: 56
  • Respect: 0
  • School: Marcellin
  • School Grad Year: 2015
Re: VCE Biology Question Thread
« Reply #6775 on: October 26, 2015, 07:00:53 pm »
0
Can someone explain what to what detail we need to know about the Repressor and Promoter regions on a gene.
Thank you!
2014: Text and Traditions 39
2015: Chemistry, Methods, Biology, English and History:Revolutions

I just want a 40 in Chemistry so i can run down my street naked, is that too much to ask?

vox nihili

  • National Moderator
  • Great Wonder of ATAR Notes
  • *****
  • Posts: 5286
  • Respect: +1366
Re: VCE Biology Question Thread
« Reply #6776 on: October 26, 2015, 07:20:27 pm »
+1
Hi Guys,
I was wondering whether a question like the one I've attached below could possibly be on an exam?
Or if the theory behind this question outside the study design?
Thanks :)

Outside of course

Can someone explain what to what detail we need to know about the Repressor and Promoter regions on a gene.
Thank you!

That they exist, essentially. That's all
MED INTERVIEW TUTORING PM to secure your place early, as they fill up quickly!

Join ATARNotes Footy Tipping

2013-15: BBioMed (Biochemistry and Molecular Biology), UniMelb
2016-20: MD, UniMelb
2019: MPH, UniMelb
Year I: BIOL10002 BIOL10003 CHEM10006 MAST10011 MAST10016 PHYC10007 SPAN10001 SPAN10002
Year II: BCMB20005 BIOM20001 BIOM20002 CLAS10022 GENE20001 SPAN20020 SPAN30014
Year III: BCBM30001 BCMB30002 BCMB30010 BIOM30001 BIOM30002 PHRM30008

Biology24123

  • Forum Leader
  • ****
  • Posts: 536
  • Respect: +1
  • School: Scopus
Re: VCE Biology Question Thread
« Reply #6777 on: October 26, 2015, 07:36:00 pm »
0
What's the answer to this

cosine

  • Victorian
  • ATAR Notes Legend
  • *******
  • Posts: 3042
  • Respect: +268
Re: VCE Biology Question Thread
« Reply #6778 on: October 26, 2015, 07:39:33 pm »
0
What's the answer to this
Pretty sure it's D because these are underneath the neck, and are an example of a different characteristic in A. afarensis than in humans.
2016-2019: Bachelor of Biomedicine
2015: VCE (ATAR: 94.85)

cosine

  • Victorian
  • ATAR Notes Legend
  • *******
  • Posts: 3042
  • Respect: +268
Re: VCE Biology Question Thread
« Reply #6779 on: October 26, 2015, 07:40:40 pm »
0
How much do we need to know about Oestrus synchronisation?

 
2016-2019: Bachelor of Biomedicine
2015: VCE (ATAR: 94.85)