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February 28, 2021, 05:14:47 pm

Author Topic: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions  (Read 57262 times)

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Genshai

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #15 on: November 01, 2019, 12:45:15 pm »
+2
deep and long (beaks)
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3086

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #16 on: November 01, 2019, 12:51:02 pm »
+1
What was answer to whether the Denisovans and Neanderthals were one species ?
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PhoenixxFire

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #17 on: November 01, 2019, 12:54:04 pm »
+8
Hey,
I should hopefully be getting a copy of the exam soon. Will write up some suggested solutions when I do!
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3086

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #18 on: November 01, 2019, 12:55:36 pm »
0
What was the answer to the what affects DNA movement in gel?
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Erutepa

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #19 on: November 01, 2019, 12:58:33 pm »
+2
What was the answer to the what affects DNA movement in gel?
I don't know the specifics of the question, but the size of the DNA fragments (base pair length) is what typically affects the movement in the gell.
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IThinkIFailed

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #20 on: November 01, 2019, 01:02:30 pm »
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What was the answer to the what affects DNA movement in gel?

I think we also had to mention charge, and how it moved towards positive electrode (think I lost a mark here, didnít explicitly state DNA was negatively charged :()
I also said that wind currents could affect movement
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3086

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #21 on: November 01, 2019, 01:09:02 pm »
+1
Is alright to say that if u increased the amount of voltage then that would increase the current through the gel and perhaps affect the rate at which DNA moves?
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ssillyssnakes

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #22 on: November 01, 2019, 01:10:49 pm »
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I said that the environmental temperature was not controlled, so it could be fixed by doing the experiment in a room with a controlled temperature.
Oh damn that's actually smart. I just said they should repeat it more lol
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3086

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #23 on: November 01, 2019, 01:15:58 pm »
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I think we also had to mention charge, and how it moved towards positive electrode (think I lost a mark here, didnít explicitly state DNA was negatively charged :()
I also said that wind currents could affect movement
but in happens in a lab?
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IThinkIFailed

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #24 on: November 01, 2019, 01:17:33 pm »
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but in happens in a lab?

Yeah, but there might still be wind currents? Honestly not sure, I only said wind currents cos it showed up in one of our sacs as a possible answer.
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Majestic Dragon

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #25 on: November 01, 2019, 01:23:16 pm »
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what i wrote was
* the size of the dna fragment
*structural integrity of the aggrose gel whether it was runny or stiff
*duration of it


Perfectly correct voltage does affect how well the dna fragment travels

Genshai

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #26 on: November 01, 2019, 01:27:55 pm »
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what was the answer to the brain size mc question?? i was tossing up between homo sapiens and homo floresiensis, but ended up choosing the latter. now i regret my choice lol.
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Majestic Dragon

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #27 on: November 01, 2019, 01:29:34 pm »
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DOUBTING MYSELF BUT
FOR QN 1B
where it ask why 300 monomer only form 10 amino acid  thingy magic
i just refereed it different codons can form the same amino acids where these codon a degenerate meaning that the having different nucleotide but form

ssillyssnakes

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #28 on: November 01, 2019, 01:33:06 pm »
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DOUBTING MYSELF BUT
FOR QN 1B
where it ask why 300 monomer only form 10 amino acid  thingy magic
i just refereed it different codons can form the same amino acids where these codon a degenerate meaning that the having different nucleotide but form
I think that question was talking about post transcriptions modification, so like most of the 300 monomers were introns and spliced out
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Majestic Dragon

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Re: VCE Biology Exam - 01/11/19 - Discussion/Questions/Solutions
« Reply #29 on: November 01, 2019, 01:33:17 pm »
+3
wrote homo sapiens,cant remember what page in the atar notes book states it ,but out of all hominid, homo sapiens do have the largest sized brain
it was trick qn tbh