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Jello_wello

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									Jello well-o lab
Problem: What detergents contain enzymes?
Procedure:
   1) Fill petri dish with jello. Let gel.
   2) Remove “plugs” of jello w/ a straw.
   3) Make 10% solutions of various detergents.
   4) Measure diameter of each cylindrical wells in jello. Record
      correctly!
   5) Pipette detergents into wells . Again, record detergent name
      correctly! Label pipette to use on day 2.
   6) Leave out on counter overnight. Let set at least 20 hrs.
   7) On day 2, use corresponding pipette to REMOVE detergent
      solution.
   8) Remeasure diameter. Record.

  Data Table
Well letter  Detergent         Initial        Final           %change
                               diameter       diameter
A
B
C
D
E
F
G
    % change in diameter:= final – initial/ initial x 100
     Questions
    1) How can you tell if the detergent contained an enzyme?
    2) Chemically, why was there a change in diameter?
    3) Explain why a detergent might be seen as “better” due to the
       presence of enzymes?

								
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