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Author Topic: Drawing a complex carbohydrate structure  (Read 5036 times)

Offline NeoMarmar

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Drawing a complex carbohydrate structure
« on: June 05, 2010, 06:46:49 pm »
I've come across many questions that ask to 'draw the structural formula of a complex carbohydrate'. You can take a look at May/June 08 paper 3 question 8 for example.

I'm not sure whether to draw a polymer, a carbohydrate, e.Take Care
An explanation would be helpful, thanks.
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Offline Vin

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Re: Drawing a complex carbohydrate structure
« Reply #1 on: June 05, 2010, 06:53:51 pm »
Ask your doubts here :: https://studentforums.biz/index.php/topic,1411.2655.html

HO-l_l-OH  = monosaccharide (Glucose

OH-|_|-O-|_|-OH = disaccharide

-O-l_l-O- = polysaccharide (starch)

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Offline Vin

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Re: Drawing a complex carbohydrate structure
« Reply #2 on: June 05, 2010, 07:02:45 pm »
One more coming up..
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Offline Vin

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Re: Drawing a complex carbohydrate structure
« Reply #3 on: June 05, 2010, 07:13:18 pm »
Please ask if anything not understood.. ;)

Sorry for the bad drawing, I am in a hurry.
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Offline Ivo

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Re: Drawing a complex carbohydrate structure
« Reply #4 on: June 05, 2010, 07:21:31 pm »
Quote from: ~VIN1094~ on June 05, 2010, 07:13:18 pm
Please ask if anything not understood.. ;)

Sorry for the bad drawing, I am in a hurry.

By the way ~VIN1094~, is this an example of condensation polymerisation becomes water molecules are eliminated?
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Offline Vin

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Re: Drawing a complex carbohydrate structure
« Reply #5 on: June 05, 2010, 08:01:34 pm »
Quote from: Ivo on June 05, 2010, 07:21:31 pm
By the way ~VIN1094~, is this an example of condensation polymerisation becomes water molecules are eliminated?

Yes..
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Offline NeoMarmar

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Re: Drawing a complex carbohydrate structure
« Reply #6 on: June 05, 2010, 08:04:23 pm »
Hmm... I think I get the gist of it now, thanks =)
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Offline Vin

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Re: Drawing a complex carbohydrate structure
« Reply #7 on: June 05, 2010, 08:28:05 pm »
Quote from: NeoMarmar on June 05, 2010, 08:04:23 pm
Hmm... I think I get the gist of it now, thanks =)

Glad you got it ;)

By the way you are supposed to know the structures for Nylon and Terylene as well  ..um so do you know them? ::)
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Offline syedz123

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Re: Drawing a complex carbohydrate structure
« Reply #8 on: June 06, 2010, 07:38:38 am »
Quote from: ~VIN1094~ on June 05, 2010, 08:28:05 pm
Glad you got it ;)

By the way you are supposed to know the structures for Nylon and Terylene as well  ..um so do you know them? ::)

hey vin...do we really need to know hw to draw the structures of Nylon and terylene?? wt else r we suppose to know for organic chems...u mynd postin a small summary note of organic chems n important stuff we need to knw
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Offline Vin

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Re: Drawing a complex carbohydrate structure
« Reply #9 on: June 06, 2010, 09:38:24 am »
Quote from: syedz123 on June 06, 2010, 07:38:38 am
hey vin...do we really need to know hw to draw the structures of Nylon and terylene?? wt else r we suppose to know for organic chems...u mynd postin a small summary note of organic chems n important stuff we need to knw

Yes! Look at the syllabus. All the structures are given..
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Offline syedz123

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Re: Drawing a complex carbohydrate structure
« Reply #10 on: June 06, 2010, 09:58:57 am »
Quote from: ~VIN1094~ on June 06, 2010, 09:38:24 am
Yes! Look at the syllabus. All the structures are given..

oh kk...yeah and By the way y is it that the marking schemes for may/june 02 doesnt include question 5?? :-\
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Offline Vin

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Re: Drawing a complex carbohydrate structure
« Reply #11 on: June 06, 2010, 10:04:36 am »
Quote from: syedz123 on June 06, 2010, 09:58:57 am
oh kk...yeah and By the way y is it that the marking schemes for may/june 02 doesnt include question 5?? :-\

Your answers lie here my friend .. https://studentforums.biz/index.php/topic,8531.msg252059.html#msg252059
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Offline syedz123

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Re: Drawing a complex carbohydrate structure
« Reply #12 on: June 06, 2010, 10:23:30 am »
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elemis

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Re: Drawing a complex carbohydrate structure
« Reply #13 on: June 08, 2010, 05:53:59 am »
As all IGCSE chemistry exams are over, this topic will be locked.
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