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Carbs and Lipids

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Carbs and Lipids

Postby apathys_insight » Wed Oct 05, 2005 12:45 am

Hello. My name is Jessica and I'm a sophomore in high school. I'm currently working on a Biology worksheet and I am so lost and had no where else to turn. I need a bit of assistance with the answering of one questions.

"Suggest one or two simple experiments to determine whether a solid white substance is a lipid or a carbohydrate. What evidence would you need to support each hypothesis? "

If anyone could assist me with answering this question it would be greatly appreciated.


Yes, I do have an online book, but it's not nearly as helpful as the actual textbook and alot less weight in my backpack, so I left it at school.
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Postby Fried Zygote Sandwich » Wed Oct 05, 2005 2:34 am

You could try dissolving it in water? If it dissolves I'd figure it'd be a carb, if it doesn't, a lipid?
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Postby mith » Wed Oct 05, 2005 3:45 am

cellulose wouldn't dissolve even though it's a carb(well very slowly anyway). Have you tried researching hydrophillic and hydrophobic substances?
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Postby Mjhavok » Wed Oct 05, 2005 9:19 am

I think carbohydrates are water soluble and lipids are not. This may help you in designing a experiment.
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Postby Poison » Wed Oct 05, 2005 3:56 pm

Not all of the carbs.
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How charged with punishment the scroll
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I am the Captain of my soul.
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Postby baikuza » Thu Oct 06, 2005 4:19 am

when i'm on high school
we test it's lipid/ fat(acctually) by put it on a paper then look at it. if the paper become transparent after the drying process, keep it under the sun till H2O- if it available on the object, the paper may says to u that it is kind of lipid/ fat.

if u not found it on the paper may be it is not lipid/fat.

quite simple? :wink:

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Postby param124 » Thu Oct 06, 2005 11:35 am

carbs....lipids...test ..simple...u can always use the common test for lipids which is sudan3 test givin u a bright red oil layer when it settles....thats for lipids...

for carbs..use the common onces...like bennedict for reducin sugars or iodine...test for..starch...etc...
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Postby baikuza » Fri Oct 07, 2005 9:42 am

oh.. sorry if u do not need that. :shock:
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Postby victor » Fri Oct 07, 2005 12:10 pm

how about a little bit complicated things?? try to put these igredients to the specimen..if it's lipid, then these igredients will solved. they're Retinol, calciopherol, and tocopherol... :lol:
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