2. Cell Chemistry & Cell Components

The lipids that form the main structural component of cell membranes are __________.

If a small droplet of triacylglycerol molecules is suspended in water, the fat molecules form a "ball of spaghetti" with no particular orientation. But if a droplet of phospholipid molecules is put in water, all the molecules point outward, toward the water. Phospholipids are forced into this orientation because phospholipids have __________.

Which of the following is not a function of lipids in the body?

A fat molecule typically contains how many fatty acids?

What is the primary form of fat stored in our bodies?

Lipids differ from other large biological molecules in that they __________.

Which type of macromolecule stores energy and provides thermal insulation for the body?

High cholesterol levels are considered a major risk factor for heart disease. If it is so bad for humans, why does the body make cholesterol in the first place?

Manufacturers make vegetable oils solid or semisolid at room temperature by __________.

Which of the following is a true statement comparing phospholipids and triacylglycerols (fats and oils)?

Nutritionally, saturated triacylglycerols are considered to be less healthful than unsaturated triacylglycerols. What is the difference between them?