Testing Macromolecules with Indicators

Which macromolecule does Iodine test for?

• Lipids - fatty acids

• Proteins - amino acids

• Carbohydrates - Starch

• Carbohydrates - glucose

Which macromolecule does Sudan Red test for?

• Carbohydrates

• Lipids

• Proteins

• Nucleic Acids

Which macromolecule does Biuret's test for?

• Carbohydrates

• Lipids

• Proteins

• Nucleic Acids

Which macromolecule does Benedict's test for?

• Carbohydrates - Glucose

• Carbohydrates - Starch

• Protein - amino acids

• Lipids - Fatty acids

Benedicts Test

• Positive for glucose

• Negative for glucose

• Positive for Lipids

• Negative for protein

Benedicts Test

• Positive

• Negative

Biuret Test

• Positive for Glucose

• Positive for Protein

• Negative for Glucose

• Negative for Protein

Biuret Test

• Positive for Protein

• Negative for Protein

Sudan Red Test

• Positive for Lipids

• Negative for Lipids

Sudan Red Test

• Tube on the left is positive and on the right is negative.

• Tube on the left is negative and on the right is positive.