Qualification > Sciences
Edexcel BIOLOGY Doubts!!!!
Deadly_king:
--- Quote from: Uchia on November 20, 2010, 04:17:06 pm ---could any person explain to me the DNA profiling/finger print method
--- End quote ---
Well, that's very vast, you know. :-\
I'll advice you to read the application booklet for Chemistry, it goes in detail about it and has been very useful to me :)
If you need any other specific explanation about it, let me know ;)
Deadly_king:
--- Quote from: Pink Princess on November 21, 2010, 08:11:42 am ---Hey.. Could anyone help me please with the condensation reaction between 2 fructose molecules? i mean how the end product will look like :S and how could i draw an unsaturated lipids :D
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Two fructose molecules will undergo condensation reaction to form a disaccharide. You just need to draw the two fructose molecules side by side. Then the H from one molecule will combine with the OH of the other molecule to form the sugar along with the release of water. A 1,4 glycosidic bond is formed.
Watch this. It's the formation of sucrose from glucose and fructose. The same principle will be applied for your question. ;)
Unsaturated lipid are those which carbon-carbon double bonds in their hydrocarbon tails. So you just draw a normal lipid and add a C=C in its tail. ;)
The picture attached represents an unsaturated fatty acid. So you just have to include it in your lipid. :D
Master_Key:
--- Quote from: Deadly_king on November 22, 2010, 07:29:33 am ---Two fructose molecules will undergo condensation reaction to form a disaccharide. You just need to draw the two fructose molecules side by side. Then the H from one molecule will combine with the OH of the other molecule to form the sugar along with the release of water. A 1,4 glycosidic bond is formed.
Watch this. It's the formation of sucrose from glucose and fructose. The same principle will be applied for your question. ;)
Unsaturated lipid are those which carbon-carbon double bonds in their hydrocarbon tails. So you just draw a normal lipid and add a C=C in its tail. ;)
The picture attached represents an unsaturated fatty acid. So you just have to include it in your lipid. :D
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Saturated lipids are mainly fats and are solids. Unsaturated lipids are mainly found as oils.
Deadly_king:
--- Quote from: Master_Key on November 22, 2010, 12:55:29 pm ---Saturated lipids are mainly fats and are solids. Unsaturated lipids are mainly found as oils.
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Thanks for the precision dude. :)
But I think she only wanted to know how to draw the structure of unsaturated lipids ;)
Master_Key:
--- Quote from: Deadly_king on November 22, 2010, 02:02:34 pm ---Thanks for the precision dude. :)
But I think she only wanted to know how to draw the structure of unsaturated lipids ;)
--- End quote ---
Then I am sorry.
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