Bio Macromolecules in Food Lab Quiz

Why did we have to perform part one of this lab with just the oil/protein/starch/glucose solutions and water?

• so that we could see if they contained macromolecules

• so that we could see what positive and negative results looked like

• so that we could learn lab safety

• so that we would have something to do in class

Use these choices to answer following question:

Macromolecule Tests:

I. Biuret’s Solution

II. Benedict’s Solution

III. Brown Paper Bag

IV. Lugol’s Iodine Solution

Mercedes is a vegetarian and has purchased a soy burger. She wants to determine if there is any protein or fat in her burger. Which of the above test(s) should she use?

• I only

• II only

• III only

• I and III

• III and IV

Use these choices to answer following question:

Macromolecule Tests:

I. Biuret’s Solution

II. Benedict’s Solution

III. Brown Paper Bag

IV. Lugol’s Iodine Solution

Caleb has added 10 mL of food slurry to a test tube along with 3 mL of a blue colored chemical. He doesn’t remember which chemical he added, so he decides to heat the test tube. The slurry turned orange. Which of the chemicals had he added to the test tube?

• I only

• either I or II

• II only

• either II or IV

• IV only

Use these choices to answer question

The following are components of macromolecules.

I. monosaccharide

II. amino acid

III. fatty acid

IV. glycerol

4. Which monomer(s) comprise carbohydrates?

• I only

• II only

• III only

• II and III

• III and IV

Use these choices to answer question:

The following are components of macromolecules.

I. monosaccharide

II. amino acid

III. fatty acid

IV. glycerol

Which monomer(s) are components of lipids?

• I only

• II only

• III only

• II and III

• III and IV

How are monomers and polymers different?

• monomers are found only in carbohydrates but polymers are found in all macromolecules

• monomers are lipids and proteins and polymers are nucleic acids and carbohydrates

• a polymer is a large molecule made out of many monomers

• a monomer is a molecule that contains only carbon but polymers contain many different elements

How are lipids and carbohydrates similar?

• they both contain C, H, O in a 1:2:1 ratio

• they are involved in providing energy to the organism

• they are both nitrogen-based molecules

• neither one is necessary for the daily functioning of cells

This reagent turns light purple when the test is positive; stays blue if negative

• Lugol's Iodine Solution

• Benedict's Solution

• Brown Paper Bag

• Biuret's Solution

This reagent is used to test for lipids

• Lugol's Iodine Solution

• Benedict's Solution

• Brown Paper Bag

• Biuret's Solution

This reagent must be heated in order to see a color change

• Lugol's Iodine Solution

• Benedict's Solution

• Brown Paper Bag

• Biuret's Solution