What type of fatty acid is crotonic acid?

In the structure of a triglyceride,each fatty acid is attached to the trihydroxy alcohol by which group?

Assertion $A$: Lipoproteins are complex lipids.
Reason $R$: The structure of a lipoprotein is formed by fatty acids,alcohol,and a non-lipid component.
Which option is correct for Assertion $A$ and Reason $R$?

Which of the following are types of fatty acids?

The long chain structure of a fatty acid molecule is formed by . . . . . . .

What does the doctor advise to patients suffering from high blood cholesterol?