Biological Molecules Lab Report
Exercises 1 & 2 Qualitative Testing for Biological Molecules
1) Complete the table for your group's samples. Be sure to clearly indicate in the blue line whether or not your sample was positive (+) or negative (-) for the given test. Then below that in the white area, type your observations, mainly focusing on the color, but also the layering as appropriate. Be sure your interpretations match your observations! The chart area will expand as you type.
Benedict's Test for Sugar | Iodine Test for Starch | Biuret Test for Protein | Sudan Test for Lipid | |
Water (-) | - | - | - | - |
Observations | Blue | Yellow | Light blue | Clear w/ red layer on top |
Glucose (+) | + | - | - | - |
Observations | Red-Orange | Yellow | Light blue | Clear w/ red layer on top |
Starch (+) | - | + | - | - |
Observations | Blue | black | Light blue | Clear w/ red layer on top |
Egg albumin (+) | - | - | + | - |
Observations | blue | yellow | Purple | Clear w/ red layer on top |
Vegetable oil (+) | - | - | - | + |
Observations | blue | yellow | Light blue | Red |
Rice milk | - | - | + | - |
Observations | Yellow(cloudy) | Yellow(cloudy) | Purple | Clear w/ red layer on top |
Pedialyte | + | - | - | - |
Observations | Red-Orange | Yellow | Pink | Yellow w/ red layer |
Chicken Broth | + | + | - | - |
Observations | Red-Orange | Black | Clear | Clear w/ red layer |
Regular lime soda | + | - | - | - |
Observations | Red-Orange | Red-orange | Clear | Clear w/ red layer |
Chai | - | - | - | - |
Observations | Green/blue | White(cloudy) | White(cloudy) | White(cloudy) |
Red bull | + | - | - | - |
Observations | Red-Orange | Red-orange | clear | Yellow w/ red layer |
Coconut water | - | - | + | - |
Observations | Brown(cloudy) | Red-orange | Purple | Clear w/ red layer |
Boost | - | - | - | - |
Observations | Yellow (separated) | White(cloudy) | Light brown(cloudy) | White (cloudy) w/ red layer on top |
2) Write a discussion based on your observations.
English: Benedict's test - positive. Polski: Prób...
Starch_SEM
Figure 1