Biochemistry Lab Results

• What is the test for simple sugars?

  Benedict's solution

  
• How do you know if there are no simple sugars?

  The Benedict's solution stays blue
• How do you know if there are simple sugars?

  The Benedict's solution changes colour (light green, yellow, orange, red, red brown)
• What is the test for starch?

  Lugol's solution (iodine solution)

  
• How do you know if there are starches present?

  the lugol's solution turns blue-black
• How do you know if starches are not present?

  Lugol's solution stays yellow
• What are the tests for lipids?

  Sudan IV solution and unglazed brown paper

  
• How do you know if something is lipids-positive?

  a stain is left on the brown paper and the indicator turns pink
• What is the test for proteins?

  Biuret test

  
• How do you know if something is protein-positive?

  If the indicator turns purple