AS Biology Unit 1 AQA

Condesation reactions, structures of amino acids and glucose

diffusion ficks law

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  • Created by: Alice
  • Created on: 13-05-12 13:19

Diffusion

The net movement of molecules from a region of high concentration to an area of low concentration


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Fick's Law

Diffusion is proportional to Surface area X Concentration gradient

                                                                   Diffusion pathway

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Transport across membranes

Diffusion : Passive process, uses no carriers

Osmosis : Passive process, uses no carriers

Facilitated Diffusion : Passive process, uses carrier proteins

Active Transport : Active process, uses carriers proteins

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Condensation Reaction Amino acid

Removes the  -OH group of one and the -H group of the other so it removes H2O

It forms a peptide bond between the C and the N

(http://www.chemicalconnection.org.uk/chemistry/topics/images/pp3.jpg)

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Amino Acid

(http://skengtraining.com/wp-content/uploads/amino-acid.jpg)

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Alpha Glucose

(http://www.biology-innovation.co.uk/wp-content/uploads/2011/09/compounds_aglucose_300.jpg)

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Condensation reaction of glucose

(http://www.pleasanton.k12.ca.us/avhsweb/thiel/apbio/notes/images1_14/disac.gif)

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