CGTC 2113L Virtual Lab Module 2 Review

What food likely contains a high amount of protein?

• Strawberries

• Bread

• Pasta

• Steak

How many different amino acids are there?

• 15
• 20
• 25
• 30

What is the monomer of proteins?

• amino acids
• polypeptides
• nucleotides
• monosaccharides

Tags

NGSS.HS-LS1-6

Each amino acid is different from the other due to....

• The R group

• The amino group

• The carboxyl group

• The central carbon

Tags

NGSS.HS-LS1-6

What subgroup of proteins speeds up chemical reactions?

• fatty acids

• starches

• enzymes

Which level of protein structure describes a protein's three-dimensional shape?

• Primary

• Secondary

• Tertiary

• Quaternary

Which reagent is used to test for proteins?

• iodine solution
• Benedict's solution
• Biuret solution
• Sudan III solution

Which biomolecule does biuret solution test for?

• simple carbohydrate (monosaccharides)
• complex carbohydrates (polysaccharides)
• proteins
• lipids

What color does biuret solution turn in the presence of a protein?

• range from yellow to red
• blue/black
• purplish/violet
• red

Tara conducted several tests on a mystery solution.  Her results were as follows:
*Biuret's = purplish/violet; *Benedict's = orange;  *Sudan III = yellow; *Iodine = black.
Which biomolecules were present in the mystery solution?

• protein & carbohydrate
• protein & lipid
• carbohydrate & lipid
• protein, carbohydrate, & lipid