Lab Prep Using Indicators for Macromolecules

What substance is the brown paper testing for?

• Carbohydrates (Sugar)

• Carbohydrates (Starch)

• Protein

• Lipids (Fat)

Why is water tested along with the oil? (More than one answer is correct)

• Water is the dependent variable

• Water has fat (lipids)

• Water doesn't have fat (lipids) so it can be used for comparison

• Water is the control

Which is true of Biuret's Solution? (More than one answer is correct)

• It is a caustic base

• It will hurt your skin

• It is flammable

• It is pretty

What substance is tested for when using Biuret's Solution?

• Carbohydrate (Starch)

• Carbohydrate (Sugar)

• Protein

• Fat (Lipid)

What color does Biuret's Solution turn into when in the presence of protein?

• Purple/Pink

• Green

• Yellow

• Brown

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What substance does Lugol's iodine test for?

• Lipid (Fat)

• Carbohydrate (Sugar)

• Carbohydrate (Starch)

• Protein

What color does Lugol's iodine turn in the presence of Starch?

• Dark brown or black

• Yellow

• Green

• Blue

Which is true of Benedict's Solution? (More than one answer is correct)

• It is a skin irritant

• It will burn your skin

• It is poisonous

What substance is tested for with Benedict's Solution?

• Protein

• Carbohydrate (Sugar)

• Carbohydrate (Starch)

• Lipid (Fat)