Structure and Functions of Lipids

Blood capillaries are made of

Following are the statements with reference to lipids:

A. Lipids having only single bonds are called unsaturated fatty acids.

B. Lecithin is a phospholipid.

C. Trihydroxy propane is glycerol.

D. Palmitic acid has 20 carbon atoms including carboxyl carbon.

E. Arachidonic acid has 16 carbon atoms.

Given structures are labelled as A, B and C. Identify them and select the correct option:

Triglycerides are fatty acids esters of glycerol. They are formed by esterification of …A… molecule(s) of fatty acids with …B… molecules(s) of glycerol:

Which of the following substance plays an essential role in the structure of cell membrane?

The ${}^{18}\mathrm{C}$ unsaturated fatty acid with three double bonds is present in:

Phospholipids are important constituents of cell membrane because they ____

Which one of the following is NOT an unsaturated fatty acid?

Prostaglandins are

Unsaturated fatty acids have

Highest calories is obtained from

Biochemical reagents are widely used for the detection of biomolecules. A reagent that specifically detects a carbonyl group $(\mathrm{C}=\mathrm{O})$ in a biomolecule will yield a positive test with

Triglycerides consist of

Which of the following is correct w.r.t. arachidonic acid?

Choose the odd from the following.

A fatty acid with two double bonds is ____

The components of a phospholipid are

A phosphoglyceride is always made up of 

A typical fat molecule is made up of

Phospholipids are known as amphipathic compounds as they have