Question

which is not true of lipids? *
1 point
they are commonly called fats and oils.
they are hydrophobic.
they are good for energy storage.
they are polar.
this is a required question

Explanation:

To determine which statement about lipids is not true, we analyze each option:

• Lipids are commonly known as fats and oils (triglycerides are a main type, with fats being solid and oils liquid at room temp), so this is true.
• Lipids are hydrophobic (water - fearing) because they are non - polar and do not interact well with polar water molecules, so this is true.
• Lipids are excellent for energy storage. For example, fat stores in the body can be used as an energy source when needed, and they store more energy per gram than carbohydrates, so this is true.
• Lipids are non - polar. The long hydrocarbon chains in lipids (like in fatty acids) are non - polar, and the overall structure of most lipids is non - polar. Polar molecules have a separation of charge, which lipids do not have. So the statement "They are polar" is not true.

Answer:

D. They are polar