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Questions in Biology tagged with "chemistry"

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  Describe the pattern shown by the results below?

  Posted by ibbyszzzzzzzzzzz786 on Dec 31, 2009 at 07:53 PM

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  Comment on the effectiveness of Thin-layer Chromatography (TLC) as a technique to separate mixtures of biological molecules.

  Posted by ibbyszzzzzzzzzz786 on Dec 30, 2009 at 11:20 AM

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  Describe the pattern shown by the results below?

  Posted by ibbyszzzzzzzzz786 on Dec 30, 2009 at 11:02 AM

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  What are the Endocrine glands and what are their purpose?

  Posted by valenjenkins on Oct 21, 2009 at 04:12 AM

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  What is blood made up of?

  Posted by hbzuk on Oct 21, 2009 at 02:42 AM

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  A ______reaction occurs when the reactants are reproduced by reaction of products 1.exchange 2.decomposition 3.synthesis 4.reversible

  Posted by makingdagrade on Mar 31, 2009 at 02:17 PM

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  What is an example of osmosis?

  Posted by babycandy22 on Mar 6, 2009 at 12:43 PM

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  Green olives are preserved in 30% sodium chloride to avoid contamination by microoganisms. why are they preserved in the way?

  Posted by peachy12 on Feb 26, 2009 at 11:18 AM

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  What is one of the most harmful results, in your opinion, of the microwave ovens that were created by Percy Spencer?

  Posted by kitty11212 on Dec 8, 2008 at 07:21 PM

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  How CO2 and H2O get to the photosynthesising cell?

  Posted by babdancer95 on Oct 20, 2008 at 07:19 PM