It is true that;
C) Lipids mix poorly with water.
Lipids are macromolecules that do not mix well with water. Lipids lack the charged groups or have slightly charged groups that would have made them stick with water. Water is readily mixed with hydrophilic substances that have a charged polar group. This is absent in lipids which are largely hydrophobic. Waxes, fat, and oil are examples of lipids. Also, there are three main lipid groups namely, phospholipids, triglycerides, and steroids.
In conclusion, lipids mix poorly with water.
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