4. Biomolecules

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 lists correctly identifies the four main types of lipids found in biological systems?

Which of the following types of molecules do cells primarily use for long-term energy storage?

How do lipids differ from other organic compounds in terms of their solubility?

Why are steroids grouped with other lipids?

Both lipids and carbohydrates are important in animal cells because both:

Why are phospholipids so important to cells?

Which of the following is not classified as a lipid?

How are lipids different from carbohydrates in terms of their structure and function?

Which type of molecule do whales primarily use for energy storage and insulation?

Which elements primarily make up lipids?

Which of the following statements about lipids is true?

Which of the following is true regarding lipids?

Which of the following molecules is classified as a lipid?