Question

_______________________ contain at least one unsaturated fatty acid; they make up most _____________ and are __________ at room temperature.

a) Saturated fats; waxes; fluid

b) Unsaturated fats; oils; liquid

c) Trans fats; phospholipids; solid

d) Saturated fats; proteins; solid

Answer 1

Unsaturated fats contain unsaturated fatty acids, making them a key component of oils and remaining liquid at room temperature, unlike solid saturated fats.

Step-by-step explanation:

The correct answer is: b) Unsaturated fats; oils; liquid. Unsaturated fats contain at least one unsaturated fatty acid with one or more double bonds, creating a kink that prevents tight packing. Consequently, these fats cannot stack as closely together as saturated fats which are solid at room temperature. Unsaturated fats are a major component of oils and are liquid at room temperature.

Examples include oils from plants such as olive oil, which typically contain both mono- and polyunsaturated fatty acids. In contrast, saturated fats contain no double bonds and are usually solid at room temperature, such as lard and butter.