Question

what do fish, cheese, eggs, bacon, olive oil, and nuts have in common? they are all sources of fat. fats are part of a diverse group of molecules called lipids. lipids also include phospholipids, waxes, and steroids. lipids are one of the three main types of biological macromolecules, or large carbon - based molecules, found in the foods we eat. the other two are carbohydrates and proteins. lipids perform many different functions. for example, fats store energy for long - term use, while phospholipids are the building blocks of cell membranes. waxes form protective outer barriers on animals and plants. steroids function as chemical messengers that regulate processes in the body. select the true statements. steroids are a type of lipid. lipids are used for quick - acting, short - term energy in cells. lipids are used to build cell membranes. walnuts, salmon, and butter are dietary sources of lipids.

Explanation:

1. For "Steroids are a type of lipid": The text says "Lipids also include phospholipids, waxes, and steroids", so this is true.
2. For "Lipids are used for quick - acting, short - term energy in cells": The text states "fats store energy for long - term use", so lipids (fats) are for long - term energy, not short - term. This statement is false.
3. For "Lipids are used to build cell membranes": The text says "phospholipids are the building blocks of cell membranes" and phospholipids are a type of lipid, so this is true.
4. For "Walnuts, salmon, and butter are dietary sources of lipids": The text lists nuts (walnuts are nuts), fish (salmon is fish), and butter (a fat - containing food) as sources of fat (a type of lipid), so this is true.

So the true statements are:

• Steroids are a type of lipid.
• Lipids are used to build cell membranes.
• Walnuts, salmon, and butter are dietary sources of lipids.

Answer:

• Steroids are a type of lipid.
• Lipids are used to build cell membranes.
• Walnuts, salmon, and butter are dietary sources of lipids.