Questions: Multiple Select Question Select all that apply Which of the following options correctly describe lipids? Select all that apply. Lipids are insoluble in water. Lipids are hydrocarbons of large molecular mass. Triacylglycerols contain three ester groups with short ( ≤ 10 C atoms) carbon chains. The most abundant type of lipid are esters of glycerol.

The correct options that describe lipids are:

1. Lipids are insoluble in water.
   Explanation: Lipids are hydrophobic molecules, meaning they do not dissolve in water. This is due to their long hydrocarbon chains, which are nonpolar and do not interact well with polar water molecules.

2. Lipids are hydrocarbons of large molecular mass.
   Explanation: Lipids are composed mainly of carbon and hydrogen atoms, forming long hydrocarbon chains or rings. These structures contribute to their large molecular mass and hydrophobic nature.

The other options are incorrect:

• Triacylglycerols contain three ester groups with short (≤ 10 C atoms) carbon chains.
  Explanation: Triacylglycerols, also known as triglycerides, typically contain three fatty acid chains that are often longer than 10 carbon atoms. These chains can vary in length but are usually between 12 to 20 carbon atoms long.

• The most abundant type of lipid are esters of glycerol.
  Explanation: While triacylglycerols (triglycerides) are indeed esters of glycerol and are a common type of lipid, the statement is misleading without specifying the context. Phospholipids, which are also esters of glycerol, are abundant in cell membranes, but the statement does not clearly define the context of "most abundant."

In summary, the correct descriptions of lipids are that they are insoluble in water and are hydrocarbons of large molecular mass.