Biomolecules Lab Quiz

What test was used to test for the presence of complex carbohydrates?

• biuret

• iodine

• benedict

• water

Which test was used to indicate the presence of proteins and what color did it change to?

• iodine, purple

• biuret, blue

• biuret, purple

• iodine, blue

Which test indicated the presence of lipids and what color will cause the lipids to be more visible?

• benedict, yellow

• biuret, orange

• iodine, green

• sudan III, red

For which test will you need to put the test tubes in a hot water bath and wait 5 minutes?

• simple carbohydrates (monosaccharides)

• complex carbohydrates (polysaccharides)

• lipids

• proteins

What is another way to test for lipids?

• Place Lugo's solution in the test tube.

• Fill the test tube with vinegar

• Rub the substance on a brown paper

• Heat the substance until it cooks.

If a piece of bread is the polymer, what monomer will it break down into?

• amino acids

• nucleic acids

• glucose

• fatty acids

If beef is the polymer, then what monomer does it break down into?

• fatty acids

• glucose

• nucleic acids

• amino acids

If amino acids are the monomers (building blocks), then what polymer was most likely eaten?

• potatoes

• peanuts

• candy

• apples

What element does protein have that carbohydrates have?

• nitrogen

• carbon

• hydrogen

• sulfur

Which monomer is found in our cell's DNA?

• proteins

• nucleic acids

• fatty acids

• RNA