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February 24, 2026, 07:30:08 am
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Author Topic: Short Answer Questions  (Read 2933 times)  Share 

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andy456

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Short Answer Questions
« on: June 04, 2010, 02:57:55 pm »
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Do we need to anwer the questions in proper sentences or can we just dot point the info???
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Martoman

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Re: Short Answer Questions
« Reply #1 on: June 04, 2010, 03:03:56 pm »
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Depends on marks.

I usually dot point key ideas down.

If it gives a clear directive to explain or to discuss then you write in sentences. Otherwise if it says to outline stuff just dot point that bad boy.
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andy456

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Re: Short Answer Questions
« Reply #2 on: June 04, 2010, 03:34:24 pm »
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Quote from: Martoman on June 04, 2010, 03:03:56 pm
Depends on marks.

I usually dot point key ideas down.

If it gives a clear directive to explain or to discuss then you write in sentences. Otherwise if it says to outline stuff just dot point that bad boy.
hahaha alright..... thanks


I have a question....
What functional group is present in all 4 nitrogen bases found in DNA??
« Last Edit: June 04, 2010, 03:36:15 pm by andy456 »
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Martoman

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Re: Short Answer Questions
« Reply #3 on: June 04, 2010, 03:43:16 pm »
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I had this same question a while back.

Amine. It has its primary group AND a secondary amine .
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andy456

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Re: Short Answer Questions
« Reply #4 on: June 04, 2010, 03:50:00 pm »
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Damn I worte amide..... oh well thanks
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Greggler

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Re: Short Answer Questions
« Reply #5 on: June 04, 2010, 04:12:29 pm »
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whats difference between amine and amide?

is amide the peptide bond eg -CONH?

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chansthename

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Re: Short Answer Questions
« Reply #6 on: June 04, 2010, 04:14:34 pm »
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^^yes amide is the peptide linkage
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m@tty

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Re: Short Answer Questions
« Reply #7 on: June 04, 2010, 05:49:15 pm »
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I get these confused too, so similar. I try and associate the d in amide with the d in peptide..
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Martoman

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Re: Short Answer Questions
« Reply #8 on: June 04, 2010, 05:51:15 pm »
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A-MINE is like the nitrogen saying ALL THE HYDROGENS ARE MINE (thats why he's got 2 hydrogens :))

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coletrain

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Re: Short Answer Questions
« Reply #9 on: June 04, 2010, 07:07:58 pm »
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can someone teach me a quick method to see whether a fatty acid is saturated, unsaturated when molecular formula is given?
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ghadz7

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Re: Short Answer Questions
« Reply #10 on: June 04, 2010, 07:18:27 pm »
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CnH2nO2 is staurated

CnH2n-2O2 is mono unsaturated with one C/C double bond

CnH2n-4O2 is poly unsaturated with two carbon to C/C double bonds

CnH2n-6O2 is poly unsaturated with three carbon to C/C double bonds

See the pattern?
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stonecold

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Re: Short Answer Questions
« Reply #11 on: June 04, 2010, 07:22:37 pm »
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If the ratio of hydrogen to carbon is 2:1, then it is saturated.  Less than 2:1 and it is unsaturated.

Every two hydrogens less than the CnH2nO2 formula represents a double bond.

i.e. C12H24O2 = saturated (no double carbon-carbon bonds)
     C18H34O2 = monounsaturated (one double carbon-carbon bond)
     C20H32O2 = polyunsaturated  (four double carbon-carbon bonds)
« Last Edit: June 04, 2010, 07:24:43 pm by stonecold »
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m@tty

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Re: Short Answer Questions
« Reply #12 on: June 04, 2010, 07:27:18 pm »
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General form of a saturated fatty acid is either: or, in condensed form, .

For every double bond there is two less hydrogens.

EDIT: removed fail error...
« Last Edit: June 04, 2010, 07:37:45 pm by m@tty »
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coletrain

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Re: Short Answer Questions
« Reply #13 on: June 04, 2010, 07:33:53 pm »
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what about if they give semi structural formula?
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ghadz7

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Re: Short Answer Questions
« Reply #14 on: June 04, 2010, 07:35:45 pm »
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Count the atoms then change it to molecular formula :P otherwise if theyu have CHCH that's an indication of a double bond
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