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December 30, 2025, 03:54:07 am
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Author Topic: Which functional group is present in all nitrogen bases in DNA?  (Read 10507 times)  Share 

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Martoman

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Which functional group is present in all nitrogen bases in DNA?
« on: May 24, 2010, 09:53:32 pm »
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I am tempted to say amine, but amine is and this is not present in thymine. Or can we say that a secondary amine exists in the form of so then amine is the group present in all?

This is from NEAP 2008 btw, which I found quite easy. How did you guys feel on this exam (if you've done it?)
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olly_s15

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Re: Which functional group is present in all nitrogen bases in DNA?
« Reply #1 on: May 24, 2010, 09:56:05 pm »
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Quote from: Martoman on May 24, 2010, 09:53:32 pm
I am tempted to say amine, but amine is and this is not present in thymine. Or can we say that a secondary amine exists in the form of so then amine is the group present in all?

This is from NEAP 2008 btw, which I found quite easy. How did you guys feel on this exam (if you've done it?)

printed it today but have not completed - it will be interesting to see if i find it "easy"
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vexx

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Re: Which functional group is present in all nitrogen bases in DNA?
« Reply #2 on: May 24, 2010, 10:08:48 pm »
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Quote from: Martoman on May 24, 2010, 09:53:32 pm
I am tempted to say amine, but amine is and this is not present in thymine. Or can we say that a secondary amine exists in the form of so then amine is the group present in all?

This is from NEAP 2008 btw, which I found quite easy. How did you guys feel on this exam (if you've done it?)

this is the only recent full exam i've done :o it was pretty easy except i made stupid mistakes.

yeah amine group is common to all, if NH2 attached to a single carbon it is a primary amine, if NH bonded to two carbons it is secondary and if N bonded to three carbons it's tertiary.
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Martoman

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Re: Which functional group is present in all nitrogen bases in DNA?
« Reply #3 on: May 24, 2010, 10:10:01 pm »
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Yeah there is one really interesting question about a random molecule to work out that i didn't get. Apart from that, it was staple neap: an actual company representative of VCAA.

I would be interested as well to see how you went as I'd like to compare my performance!
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Stroodle

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Re: Which functional group is present in all nitrogen bases in DNA?
« Reply #4 on: May 24, 2010, 10:12:29 pm »
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I found Neap 2008 and 2009 to be pretty easy, but still had to think a bit more than in other exams. Got 93% on the 2008 and 97% on the 2009. Haven't done the 2010 yet.

How'd you go?
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vexx

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Re: Which functional group is present in all nitrogen bases in DNA?
« Reply #5 on: May 24, 2010, 10:14:38 pm »
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Quote from: Martoman on May 24, 2010, 10:10:01 pm
Yeah there is one really interesting question about a random molecule to work out that i didn't get. Apart from that, it was staple neap: an actual company representative of VCAA.

I would be interested as well to see how you went as I'd like to compare my performance!

i didn't do that well too be honest, i made silly mistakes ><. 17/20 for MC and 47/50 for SA. how about you?
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stonecold

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Re: Which functional group is present in all nitrogen bases in DNA?
« Reply #6 on: May 24, 2010, 10:22:00 pm »
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How did people find VCAA 2009 out of interest?  I made some very dumb mistakes, but time wasn't a problem like everyone was making out. I made the A+ cut-off, but still lots of room for improvement.  There was nothing difficult on it...

I personally loved last years exam.  I hope we get something similar this year. :)
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Martoman

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Re: Which functional group is present in all nitrogen bases in DNA?
« Reply #7 on: May 24, 2010, 10:23:12 pm »
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yeah i got my teacher to mark it 89% for the neap 08.
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naved_s9994

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Re: Which functional group is present in all nitrogen bases in DNA?
« Reply #8 on: May 24, 2010, 10:28:22 pm »
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Quote from: stonecold on May 24, 2010, 10:22:00 pm
How did people find VCAA 2009 out of interest?  I made some very dumb mistakes, but time wasn't a problem like everyone was making out. I made the A+ cut-off, but still lots of room for improvement.  There was nothing difficult on it...

I personally loved last years exam.  I hope we get something similar this year. :)

LOL!
Not quite what Ive heard about. Ive got it printed, and all. WIll probably sit it this weekend. Then I will let you know my score :P

However, I must admit. By doing X amount of exams, you really do pick up the questions that are 'frequently' enough, asked.

@Martoman 93% here :P

I got higher, but had to take off all my half marks I gave myself, whilst marking :P
« Last Edit: May 24, 2010, 10:32:11 pm by naved_s9994 »
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Martoman

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Re: Which functional group is present in all nitrogen bases in DNA?
« Reply #9 on: May 24, 2010, 10:30:48 pm »
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Yes i hope for last years exam but much harder, i got 94 on that one.
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2009: Math methods: 50, Psychology: 44
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stonecold

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Re: Which functional group is present in all nitrogen bases in DNA?
« Reply #10 on: May 24, 2010, 10:38:24 pm »
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Quote from: Martoman on May 24, 2010, 10:30:48 pm
Yes i hope for last years exam but much harder, i got 94 on that one.

Nice!  I reckon that would have kept you on 50 pace last year, considering A+ was 78% and above. :D
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Martoman

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Re: Which functional group is present in all nitrogen bases in DNA?
« Reply #11 on: May 24, 2010, 10:39:54 pm »
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Holy shit. It couldn't've been. what about 08's cut off?
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olly_s15

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Re: Which functional group is present in all nitrogen bases in DNA?
« Reply #12 on: May 24, 2010, 10:44:26 pm »
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87%
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vexx

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Re: Which functional group is present in all nitrogen bases in DNA?
« Reply #13 on: May 24, 2010, 10:56:21 pm »
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Quote from: stonecold on May 24, 2010, 10:22:00 pm
How did people find VCAA 2009 out of interest?  I made some very dumb mistakes, but time wasn't a problem like everyone was making out. I made the A+ cut-off, but still lots of room for improvement.  There was nothing difficult on it...

I personally loved last years exam.  I hope we get something similar this year. :)

imma do this one in a week and a half. and i hope it's going to be long too with an uber low A+ cutoffs!
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2010 VCE: psychology | english language | methods cas | further | chemistry | physical ed | uni chemistry || ATAR: 97.40 ||

2011: BSc @ UoM

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    || genetics&the evolution of life | biochemistry&molecular biology | techniques of molecular science -.- | mind,brain&behaviour 2

20XX: MEDICINE

Martoman

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Re: Which functional group is present in all nitrogen bases in DNA?
« Reply #14 on: May 24, 2010, 11:04:55 pm »
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If 09's exam is considered challenging then we most definitely will do well on the mid-years.
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2009: Math methods: 50, Psychology: 44
2010: chem 47, further 48, Spesh 49 fml seriously and other yr 11 subs.
2011: Holidaying, screw school.
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