Question

1 — structure and function of lipids
learning objective: identify chemical structure and function of lipids in the human diet.
lipids are known to be hydrophobic, which makes them _______.

a.) insoluble in water
b.) able to mix well with water
c.) soluble in water
d.) extremely polar

Explanation:

The term "hydrophobic" means "water - fearing". By definition, substances that are hydrophobic do not dissolve in water. Option b says they mix well with water, which is opposite to hydrophobic. Option c says soluble in water, also opposite. Option d: Lipids are non - polar (or have low polarity) and hydrophobic, so they are not extremely polar. So the correct answer is a as hydrophobic substances are insoluble in water.

Answer:

a.) insoluble in water