Academic Departments | LSCS Biology Departments | LSC-North Harris Biology Department | Biology | Biology I: Lab |

Biological Molecule Tests

When testing an unknown substance two controls may be used for comparison to the unknown. (a - control and a + control). The negative control shows no change when the testing agent is used indicating the absence of a certain molecule. The positive control shows a definitive change indicating the presence of a certain molecule.




Testing Unknowns




      • Click on the test tube or tubes that shows a positive test.
      • Click on the solution name for the lipid test.


      •                  
      • Click on the word or words for the contents of unknown 1.




      • Click on the test tube or tubes that shows a positive test.
      • Click on the solution name for the protein test.

                         
      • Click on the word or words for the contents of unknown 2.



      • Click on the test tube or tubes that shows a positive test.
      • Click on the solution name for the reducing sugar test.

                         
      • Click on the word or words for the contents of unknown 3.
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