Lipids and Carbohydrates

In the image above what letter corresponds to a saturated fatty acid?

• A

• B

• C

• D

Which of the following types of lipid does the image above represent?

• Triglyceride

• Wax

• Steroid

• Phospholipid

If a carbohydrate’s carbonyl group is at the very end of the molecule, what kind of sugar is it classified as?

• Ketose

• Ketone

• Aldose

• Carboxyl

You observe a type of cooking fat melt at room temperature, what does this tell you about the structure of the lipid?

• Its fatty acid chains are saturated

• Its fatty acid chains are unsaturated

• Its fatty acid chains are not bound to glycerol

• Its fatty acid chains are shorter in length

If glycosidic bonds are unable to form in a cell, which of the following would occur?

• No carbohydrates would be formed

• Glycerol would be unable to bond to fatty acid chains

• Enzymes that break down sugars would be rendered nonfunctional

• Disaccharide formation would be interrupted

What effect does the addition of a phosphate group to the glycerol backbone have on a lipid?

• It makes the “head” of the phospholipid hydrophilic, while the fatty acid chains remain hydrophobic

• It helps in orienting the phospholipid so that the heads are to the extracellular and intracellular spaces that are water based

• It plays a role in the bilayer structuring of phospholipids in the plasma membrane

• All of the above

Which of the following is not a monosaccharide?

• Glucose

• Galactose

• Sucrose

• Fructose

Insoluble fiber is cellulose that:

• Controls blood sugar levels

• Passes through the digestive tract unchanged

• Is toxic to humans because it cannot be digested

• Turns to a gel during digestion through the addition of water