ATAR Notes: Forum
VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Biology => Topic started by: golden on October 29, 2010, 05:23:08 pm
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How did you find the exam? Question wise or time wise?
For the question of transcription, did you have to mention that the pre-RNA was constructed from the 5' to the 3'? Or was that not required?
Also, with the termination of the construction of mRNA how is that done?
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Was it just me, or did anyone else find the short answer section longer compared to past years? It wasn't really hard, but I can't say it was easy either cos of certain application questions :/ What did you guys say for the question about how the inactivation of a centromere contributed significantly to human evolution? And also the two characteristics which identify which jaw belonged to Australopithecus?
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Lol I got confused because I thought bigger teeth= older but then the jaw was parabolic :S Gonna lose quite a few marks here and there, but oh well.
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Lol I got confused because I thought bigger teeth= older but then the jaw was parabolic :S Gonna lose quite a few marks here and there, but oh well.
I wrote something like: the bigger molars mean aust. while smaller canines meant aust..
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Was it just me, or did anyone else find the short answer section longer compared to past years? It wasn't really hard, but I can't say it was easy either cos of certain application questions :/ What did you guys say for the question about how the inactivation of a centromere contributed significantly to human evolution?
I actually semi guessed the answer...
it was one of only two qstions I had trouble with..
in regards to the chance of a gamete with both a normal chromosome 1 and 2, what was the percentage?
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i said Jaw X was australo as it was more parablolic and it had a reduced size in canines ;x
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i said Jaw X was australo as it was more parablolic and it had a reduced size in canines ;x
sounds good
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Lol I got confused because I thought bigger teeth= older but then the jaw was parabolic :S Gonna lose quite a few marks here and there, but oh well.
depends on which particular teeth.
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But weren't the teeth that were reduced in size the pre-molars and not the canines? I said that the molars of Jaw X were larger, proving that Australopithecus had a diet consisting of more fibrous plants D: I seriously think I screwed this paper up!
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Lol I got confused because I thought bigger teeth= older but then the jaw was parabolic :S Gonna lose quite a few marks here and there, but oh well.
depends on which particular teeth.
The front teeth were smaller for X, which is what I said.
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But weren't the teeth that were reduced in size the pre-molars and not the canines? I said that the molars of Jaw X were larger, proving that Australopithecus had a diet consisting of more fibrous plants D: I seriously think I screwed this paper up!
but that's correct.
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Also, with the termination of the construction of mRNA how is that done?
rna pol moves along and dislodges after reaching the terminator sequence
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Also, with the termination of the construction of mRNA how is that done?
rna pol moves along and dislodges after reaching the terminator sequence
What does the terminator sequence consist of?
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But weren't the teeth that were reduced in size the pre-molars and not the canines? I said that the molars of Jaw X were larger, proving that Australopithecus had a diet consisting of more fibrous plants D: I seriously think I screwed this paper up!
but that's correct.
I concur.
I think VCAA made the australopithicus jaw bigger to confuse people.
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fairly easy;
anyone else notice that ridiculously stupid MC question:
A) Female I1 has the trait
B) Male I1 has the trait
C) Female I2 has the trait
D) Male I2 has the trait
(something along the lines of this)
what kind of question is this? lol.
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na it was father of I2 has the trait...??
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yeah.. just saying its a stupid question
it's like asking identify the square and whether it is number 1 or 2
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lol , im pretty sure the question was talking about the parents of the first generation..not the acutal people of the first generation
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Exam was okay, took me a little longer than the practices, answered the last 5 marks in the last 5 mins...
Didn't like them asking about transcription/translation >.<
few dumb mistakes but not bad, now I want all my sac scores to try and work out my SS.
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Also, with the termination of the construction of mRNA how is that done?
rna pol moves along and dislodges after reaching the terminator sequence
What does the terminator sequence consist of?
http://en.wikipedia.org/wiki/Transcription_(genetics)#Termination
http://www.ncbi.nlm.nih.gov/bookshelf/br.fcgi?book=mcb&part=A2847
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fairly easy;
anyone else notice that ridiculously stupid MC question:
A) Female I1 has the trait
B) Male I1 has the trait
C) Female I2 has the trait
D) Male I2 has the trait
(something along the lines of this)
what kind of question is this? lol.
I think my answer was I2 had the trait... forgot if they were female or male
i said Jaw X was australo as it was more parablolic and it had a reduced size in canines ;x
Wrote this also
Are the introns removed in transcription or translation?
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introns are removed during transcription, and RNA ligase joined the remaining exons to form a complete mRNA strand.
for the MC on "who has the trait" i felt it was C (i think) where it was the mother of I-2 who had the trait, because being a x-linked dominant, I-2 will inherit the father's Y chromosome, so for him to show the trait his mother must carry the X(bad) chromosome. being dominant means she will have the trait even when in a heterozygote
i need help people! for the migrating group question, was it asking for the process that occured or the name of the group? i know the process was founder effect, so i said the group name was founder group lol, correct or what was the proper answer?
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OMG i totally forgot about RNA ligase nooo
It was definetly asking the name of the group, i had to read it twice as well, i knew it was targeting the founder effect so i wrote founder group/founder population
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LOL I WROTE 44 AUTOSOMES
BUT IT WAS 22
FMLLLLLLLL
did anyone else make this mistake?
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LOL I WROTE 44 AUTOSOMES
BUT IT WAS 22
FMLLLLLLLL
did anyone else make this mistake?
I dont remember a question like this?
There was a question saying we have 46 chromosomes and it asked some kind of question and my answer was 23
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In summary, all I have to say is well done VCAA, great exam. Very fair, no matter what mark I get.
Best part. No gay ass fucking plant questions!!!
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In summary, all I have to say is well done VCAA, great exam. Very fair, no matter what mark I get.
Best part. No gay ass fucking plant questions!!!
I disagree
I didnt like the exam ( and i think i did pretty good anyway)
thought it was REALLY badly set out.
last years exam involved questions on a broad range of the course.
this years was a bit random .. WAYY too many similar questions.
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In summary, all I have to say is well done VCAA, great exam. Very fair, no matter what mark I get.
Best part. No gay ass fucking plant questions!!!
lmao. felt pretty good after the exam finished with 20~ minutes, checked some answers.
A+ cut off predictions??
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In summary, all I have to say is well done VCAA, great exam. Very fair, no matter what mark I get.
Best part. No gay ass fucking plant questions!!!
lmao. felt pretty good after the exam finished with 20~ minutes, checked some answers.
A+ cut off predictions??
80%
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LOL I WROTE 44 AUTOSOMES
BUT IT WAS 22
FMLLLLLLLL
did anyone else make this mistake?
gahhhh, i'm an idiot - i'm pretty sure for some reason i wrote 12... don't ask what the heck i was thinking :S
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Yeah, on the whole, it was a very balanced exam. The australopithecus question was a bit irritating and the 'fish' question was another example of stupidly broad topics, but I feel whatever mark I get will be what I deserve.
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LOL I WROTE 44 AUTOSOMES
BUT IT WAS 22
FMLLLLLLLL
did anyone else make this mistake?
gahhhh, i'm an idiot - i'm pretty sure for some reason i wrote 12... don't ask what the heck i was thinking :S
why wasn't it 44?
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LOL I WROTE 44 AUTOSOMES
BUT IT WAS 22
FMLLLLLLLL
did anyone else make this mistake?
gahhhh, i'm an idiot - i'm pretty sure for some reason i wrote 12... don't ask what the heck i was thinking :S
why wasn't it 44?
because it said in a gamete
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LOL I WROTE 44 AUTOSOMES
BUT IT WAS 22
FMLLLLLLLL
did anyone else make this mistake?
gahhhh, i'm an idiot - i'm pretty sure for some reason i wrote 12... don't ask what the heck i was thinking :S
why wasn't it 44?
because it said in a gamete
i didnt even see the 'autosome' part ! most people im class didnt either meaning so wont the rest of the state ! YAYY !
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fairly easy;
anyone else notice that ridiculously stupid MC question:
A) Female I1 has the trait
B) Male I1 has the trait
C) Female I2 has the trait
D) Male I2 has the trait
(something along the lines of this)
what kind of question is this? lol.
it said mother of, father of didnt it :S
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LOL I WROTE 44 AUTOSOMES
BUT IT WAS 22
FMLLLLLLLL
did anyone else make this mistake?
gahhhh, i'm an idiot - i'm pretty sure for some reason i wrote 12... don't ask what the heck i was thinking :S
why wasn't it 44?
because it said in a gamete
oh :( didn't read it carefully enough.
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In summary, all I have to say is well done VCAA, great exam. Very fair, no matter what mark I get.
Best part. No gay ass fucking plant questions!!!
I disagree
I didnt like the exam ( and i think i did pretty good anyway)
thought it was REALLY badly set out.
last years exam involved questions on a broad range of the course.
this years was a bit random .. WAYY too many similar questions.
true not even one dihybrid cross question! I was looking forward to those!!!!!!
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i said Jaw X was australo as it was more parablolic and it had a reduced size in canines ;x
yay wrote the exact same answer
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In summary, all I have to say is well done VCAA, great exam. Very fair, no matter what mark I get.
Best part. No gay ass fucking plant questions!!!
I disagree
I didnt like the exam ( and i think i did pretty good anyway)
thought it was REALLY badly set out.
last years exam involved questions on a broad range of the course.
this years was a bit random .. WAYY too many similar questions.
true not even one dihybrid cross question! I was looking forward to those!!!!!!
yeah I wanted some more cross type questions.
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haha yea, but no incomplete/codominance so yay!
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In summary, all I have to say is well done VCAA, great exam. Very fair, no matter what mark I get.
Best part. No gay ass fucking plant questions!!!
I disagree
I didnt like the exam ( and i think i did pretty good anyway)
thought it was REALLY badly set out.
last years exam involved questions on a broad range of the course.
this years was a bit random .. WAYY too many similar questions.
true not even one dihybrid cross question! I was looking forward to those!!!!!!
yeah I wanted some more cross type questions.
yeah, no linked genes crosses. :(
there was stuff all genetics on there, especially short answer...
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No genetics? :'(
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No genetics? :'(
Not much :( A few on meiosis...
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im very amusing by the transcription/translation qn, i mean seeing as most people know it are they going to be super anal about giving out marks?
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Just wondering if somebody could let me know about the following questions:
* Change of normal chromosome I and normal chromosome 2 - I said 8/24 = 1/3 = 33%
* The stupid fish gene sequencing question.
* The centromere question
@ Translocation - why is he phenotypically normal?!
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Just wondering if somebody could let me know about the following questions:
* Change of normal chromosome I and normal chromosome 2 - I said 8/24 = 1/3 = 33%
* The stupid fish gene sequencing question.
* The centromere question
@ Translocation - why is he phenotypically normal?!
these are my responses and are by no means 100% correct
* Change of normal chromosome I and normal chromosome 2
there were four possible genotypes, N1 with N2, N1 with R2 (retarted 2), R1 with N2 and R1 with R2. therefore chance of both N1 and N2 is 1/4
* The stupid fish gene sequencing question
i cant remember qn u gtta be specific
* The centromere question
-mitosis can occur properly
-when the hybrid primate/man thing mates with another, it now has a homologous chromosome within which a fertile zygote can form
Translocation - why is he phenotypically normal?!
i said because all genetic material is conserved. no deletions/mutations ect.
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Was hoping for a lethal alllele question oh well
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-i agree with the chromosome 1 and 2 quesiton saying that its 1/4
-for the translocation question, i said that the genes are still existant in the karyotype thus he is still able to produyce the proteins required to make him 'normal' something along those lines.
-fisherman question was effed up, i just bullshitted
-was a tad confused with the jaws question, but conlcuded that the more parabolic jaw was the australopithecus
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yea i said parabolic and smaller teeth, not sure if just saying small teeth will suffice for a mark....
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nah small teeth should do, i said that and larger jaw size.
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FOR THE MC QUESTION WITH THE DNA TEMPLATE
I SAID
AGT
WAS THAT THE ANSWER?
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Just wondering if somebody could let me know about the following questions:
* Change of normal chromosome I and normal chromosome 2 - I said 8/24 = 1/3 = 33%
* The stupid fish gene sequencing question.
* The centromere question
@ Translocation - why is he phenotypically normal?!
these are my responses and are by no means 100% correct
* Change of normal chromosome I and normal chromosome 2
there were four possible genotypes, N1 with N2, N1 with R2 (retarted 2), R1 with N2 and R1 with R2. therefore chance of both N1 and N2 is 1/4
* The stupid fish gene sequencing question
i cant remember qn u gtta be specific
* The centromere question
-mitosis can occur properly
-when the hybrid primate/man thing mates with another, it now has a homologous chromosome within which a fertile zygote can form
Translocation - why is he phenotypically normal?!
i said because all genetic material is conserved. no deletions/mutations ect.
I suck... I wrote 1/4 then crossed it out in pencil
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Just wondering if somebody could let me know about the following questions:
* Change of normal chromosome I and normal chromosome 2 - I said 8/24 = 1/3 = 33%
* The stupid fish gene sequencing question.
* The centromere question
@ Translocation - why is he phenotypically normal?!
these are my responses and are by no means 100% correct
* Change of normal chromosome I and normal chromosome 2
there were four possible genotypes, N1 with N2, N1 with R2 (retarted 2), R1 with N2 and R1 with R2. therefore chance of both N1 and N2 is 1/4
* The stupid fish gene sequencing question
i cant remember qn u gtta be specific
* The centromere question
-mitosis can occur properly
-when the hybrid primate/man thing mates with another, it now has a homologous chromosome within which a fertile zygote can form
Translocation - why is he phenotypically normal?!
i said because all genetic material is conserved. no deletions/mutations ect.
I suck... I wrote 1/4 then crossed it out in pencil
why pencil?
that's better than what I wrote, originally I had 1/4 then I changed it to 1/8 :P
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FOR THE MC QUESTION WITH THE DNA TEMPLATE
I SAID
AGT
WAS THAT THE ANSWER?
whichever one that didnt contain a T because it specifically asked for tRNA, which knocked out 2 of em, i forget which answer it was though...
someone should post the exam :/
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Just wondering if somebody could let me know about the following questions:
* Change of normal chromosome I and normal chromosome 2 - I said 8/24 = 1/3 = 33%
* The stupid fish gene sequencing question.
* The centromere question
@ Translocation - why is he phenotypically normal?!
these are my responses and are by no means 100% correct
* Change of normal chromosome I and normal chromosome 2
there were four possible genotypes, N1 with N2, N1 with R2 (retarted 2), R1 with N2 and R1 with R2. therefore chance of both N1 and N2 is 1/4
* The stupid fish gene sequencing question
i cant remember qn u gtta be specific
* The centromere question
-mitosis can occur properly
-when the hybrid primate/man thing mates with another, it now has a homologous chromosome within which a fertile zygote can form
Translocation - why is he phenotypically normal?!
i said because all genetic material is conserved. no deletions/mutations ect.
I suck... I wrote 1/4 then crossed it out in pencil
why pencil?
that's better than what I wrote, originally I had 1/4 then I changed it to 1/8 :P
ahhh same man. i got 1/8...i thought there was a 1/4 chance that the two would align together...then a 50% of one of the gametes to have it..so 1/4 x 1/2 =_= but now people have seem to say its wrong :(
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Meiosis question:
There are four possible types of gametes, with each one having an equal probability of occurring, and only one of them has a normal chromosome 1 and 2. Wished they gave you more lines though - i'm not sure whether I had to talk about independent assortment
Fusion of centromere qn:
I said that the fusion of the centromere caused instant speciation as the ancestor chromosomes and the "human" chromosome 2 are no longer homologous, and this was the point where the human line diverged from the chimpanzee line. What you guys reckon?
@onerealsmartass: That jaw question - I don't think they'll pay smaller teeth as the canines of Jaw (whichever one was Australopithecus) were smaller yet the molars were much larger :S
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Meiosis question:
There are four possible types of gametes, with each one having an equal probability of occurring, and only one of them has a normal chromosome 1 and 2. Wished they gave you more lines though - i'm not sure whether I had to talk about independent assortment
Fusion of centromere qn:
I said that the fusion of the centromere caused instant speciation as the ancestor chromosomes and the "human" chromosome 2 are no longer homologous, and this was the point where the human line diverged from the chimpanzee line. What you guys reckon?
@onerealsmartass: That jaw question - I don't think they'll pay smaller teeth as the canines of Jaw (whichever one was Australopithecus) were smaller yet the molars were much larger :S
Nah i said that australopithecus (i was relating to the first jaw) had larger molars than the gorrila - just got my wording confused
And i wrote something along the lines of what you wrote for the centromere question :D - centromeres fused thus producing 1 chromosome from which the humans evolved from the common ancestor and the chimps evolvgin the other way... something like taht
Ahhhh even tho i know ive lost a few marks here and there i feel confident at the same time cos ive got a chance with those dodgy quesitons
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Meiosis question:
There are four possible types of gametes, with each one having an equal probability of occurring, and only one of them has a normal chromosome 1 and 2. Wished they gave you more lines though - i'm not sure whether I had to talk about independent assortment
Fusion of centromere qn:
I said that the fusion of the centromere caused instant speciation as the ancestor chromosomes and the "human" chromosome 2 are no longer homologous, and this was the point where the human line diverged from the chimpanzee line. What you guys reckon?
@onerealsmartass: That jaw question - I don't think they'll pay smaller teeth as the canines of Jaw (whichever one was Australopithecus) were smaller yet the molars were much larger :S
Nah i said that australopithecus (i was relating to the first jaw) had larger molars than the gorrila - just got my wording confused
And i wrote something along the lines of what you wrote for the centromere question :D - centromeres fused thus producing 1 chromosome from which the humans evolved from the common ancestor and the chimps evolvgin the other way... something like taht
Ahhhh even tho i know ive lost a few marks here and there i feel confident at the same time cos ive got a chance with those dodgy quesitons
your centromere answer was really similar to mine! hi five ;)
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*high five* :)
our answer is similar to thushans as well. that is a major confidence booster :D
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lol hopefully we get paid
tbh i think those "dodgy" questions are good for us as they really tested our ability to think outside the box
which is why i think A+ won't be that high...i'm thinking 119-123/150
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lol hopefully we get paid
tbh i think those "dodgy" questions are good for us as they really tested our ability to think outside the box
which is why i think A+ won't be that high...i'm thinking 119-123/150
not high for you, but high for us mortals...
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oh i meant A+ cutoff sorry
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lol hopefully we get paid
tbh i think those "dodgy" questions are good for us as they really tested our ability to think outside the box
which is why i think A+ won't be that high...i'm thinking 119-123/150
not high for you, but high for us mortals...
Lol so true!
Hopeful for 65ish...
What kind of study score you reckon i would get with these scores:
Mid yr: B+ (high a mark off A i reckon)
Sacs: 187.5/200 - cohort is intermediate i think... we had 3 A+'s in mid yr like 10 A's
End of yr: A+ (65~ +/- 2-4 marks)
Thanks im thinking a 38 atm.
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lol hopefully we get paid
tbh i think those "dodgy" questions are good for us as they really tested our ability to think outside the box
which is why i think A+ won't be that high...i'm thinking 119-123/150
not high for you, but high for us mortals...
Lol so true!
Hopeful for 65ish...
What kind of study score you reckon i would get with these scores:
Mid yr: B+ (high a mark off A i reckon)
Sacs: 187.5/200 - cohort is intermediate i think... we had 3 A+'s in mid yr like 10 A's
End of yr: A+ (65~ +/- 2-4 marks)
Thanks im thinking a 38 atm.
Did people forget about Mao's study score estimator?
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oooooh i have not seen this yet :)
i shall have a look.
EDIT: nice 8-) lower: 39 and upper:40
happy with anything over 38 :coolsmiley:
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oooooh i have not seen this yet :)
i shall have a look.
it's very specific!
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theres a mistake in the paper
for the questoin where ou had to provide the complementary Anticodon molecule
In the question it states, "A DNA template strand codes for the amino acid serine with any of the following Codons."
should be triplets..
IF YOU TELL YOUR TEACHER AND THEY RING UP VCAA EVERYONE WILL GET THE MARK .
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you got a point. altho i chose the right answer :)
Would they award everyone a mark tho?
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you got a point. altho i chose the right answer :)
Would they award everyone a mark tho?
Lol i misread the question.
Thought it said what is the Dna triplet from these amino acids.
fmlllllllllllllll
got agt. grrr stupiddd
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they have to
the question is wrong, so its their fault,
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matt123 how you feeeling?? hope your feeling better dude :)
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matt123 how you feeeling?? hope your feeling better dude :)
Hey man.
Yeah thanks buddy.
I wouldnt say BETTER ... but im not as bad as before.
Temp is still 38.5-39 and im freezing . but hey . what can you do?.
hope get better before psych exam tho.
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what a trooper :)
maybe you should have an early night.
get bettter soon
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No. The question isn't wrong. You're supposed to figure out the mRNA sequence - and hence determine the codon that DOES codon for that amino acid.
theres a mistake in the paper
for the questoin where ou had to provide the complementary Anticodon molecule
In the question it states, "A DNA template strand codes for the amino acid serine with any of the following Codons."
should be triplets..
IF YOU TELL YOUR TEACHER AND THEY RING UP VCAA EVERYONE WILL GET THE MARK .
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No. The question isn't wrong. You're supposed to figure out the mRNA sequence - and hence determine the codon that DOES codon for that amino acid.
theres a mistake in the paper
for the questoin where ou had to provide the complementary Anticodon molecule
In the question it states, "A DNA template strand codes for the amino acid serine with any of the following Codons."
should be triplets..
IF YOU TELL YOUR TEACHER AND THEY RING UP VCAA EVERYONE WILL GET THE MARK .
if you were to read the paper before commenting, you would notice it asks for the t-RNA molecule NOT the m-RNA molecule,
sorry to be the bringer of bad news,