VCE Biology Question Thread

[Tyleralp1]

For pedantic markers^

That awkward moment when you've completed the 2013 Exam for a second time, after a few weeks, have made an improvement in the mark, but stuffed up in the same short answer question :/

[katiesaliba]

That awkward moment when you've completed the 2013 Exam for a second time, after a few weeks, have made an improvement in the mark, but stuffed up in the same short answer question :/

Same thing happened to me with the 2006 and 2010 unit 3 exams ahh. So annoying.

[gunsforhands]

ok real talk guys. how much do we think is gonna be on the exam about plant hormones? on past exams its been like 1 or 2 multiple choice questions max. surely its not gonna be very much this year either ?

[katiesaliba]

ok real talk guys. how much do we think is gonna be on the exam about plant hormones? on past exams its been like 1 or 2 multiple choice questions max. surely its not gonna be very much this year either ?

They're no longer on the SD 
http://www.vcaa.vic.edu.au/Pages/vce/studies/biology/biologyindex.aspx
(check the FAQs)

[soNasty]

About to ask/clarify a lot of shit:

When would we use DNA-DNA Hybridisation to determine evolutionary relationships? Example please!
Also, do we need to know about phyletic, parallel and coevolution?
What are the factors that affect the gene flow besides migration?
Whats the difference b/w adaptive radiation and divergent evolution?
Are antibodies produced, and hence does immunological memory occur upon bacterial infection & viral infection, or just viral?
APC's have MHC II markers yeah?
Are endogenous antigens rogue substances or infected cells that are found inside the body?


Also, just to clarify:
Independant variable - Variable that is being altered
Dependent variable - Variable being measured
Control - A group that is treated exactly like an experimental group except for the variable one's testing

[howlingwisdom]

During polymerase chain reaction, do primers attach at the 3' end?

[gunsforhands]

They're no longer on the SD 
http://www.vcaa.vic.edu.au/Pages/vce/studies/biology/biologyindex.aspx
(check the FAQs)

rADICAL

[Vicbelgaus]

During polymerase chain reaction, do primers attach at the 3' end?

yeah the primers are attached to the 3' prime end of the DNA strand

[vcestudent123]

"shared characteristics which define primates,
hominoids and hominins"

I have somewhat of an idea, but could somebody give examples of these 'shared characteristics", thanks!

[katiesaliba]

"shared characteristics which define primates,
hominoids and hominins"

I have somewhat of an idea, but could somebody give examples of these 'shared characteristics", thanks!

-primates:
opposable thumbs
relative large brain compared to body
arms that can bend behind back
flat fingernails as opposed to claws
colour vision and 3D stereoscopic vision
relatively long gestation period

[sandrag]

Hey guys! There's been alot of speculation about experimental designs being heavily tested tomorrow. If we were to get a question asking to design an experiment, how would we approach it? Is there a specific structure that we must adhere to? Thankyou  !

[sandrag]

This question is from VCAA 2013's m/c exam. For some reason there are no explanations for Section A  Could someone please explain why the answer is B and not A? Thank you xxx

[Jason12]

is NADPH included as an output of the light independent reactions or is it used up?

[vcestudent123]

This question is from VCAA 2013's m/c exam. For some reason there are no explanations for Section A  Could someone please explain why the answer is B and not A? Thank you xxx

Blood type A and B can be Ai and Bi

So crossing between the two would could create the genotypes AB, Ai, Bi and ii

Crossing between AB and O (ii)

Would create the genotypes Ai and Bi

The information tells us that "Four family members have different blood groups"

So, it has to be B

[vcestudent123]

is NADPH included as an output of the light independent reactions or is it used up?

The H in NADPH is used in the formation of Glucose and NADP+ is an output, which is reused by the light dependent stage