Lipids

Q.

Which of these is NOT true for lipids?

1. they contribute to buoyancy

2. they help in resistance to cold weather

3. they can act as 'hormones'

4. they are made up of glucose monomers

Q.

The process of synthesis of lipids by the human body is known as ___.

1. Lipolysis

2. Lipogenesis

3. lipogenolysis

4. None of the above

Q.

Select the option with the incorrect statement.

I. The building blocks of Lipids are amino acids.

II. Majority of the enzymes contain a non protein part called the prosthetic group.

III. Fructose is the sweetest of all sugars.

IV. Nucleic acids are the hereditary material in living organisms.

1. IV

2. I

3. II

4. III

Q. Spoilage of oil can be detected by which fatty acid:

1. Erucic acid
2. Linolenic acid
3. Oleic acid
4. Linoleic acid

Q. Which one of the following structural formulae of two organic compounds is correctly identified along with its related function?

1. A:Lecithin -a component of cell membrane
2. A: Triglyceride -major source of energy
3. B: Adenine -a nucleotide that makes up nucleic acids
4. B:Uracil -a component of DNA

Q. Match the following columns.
$\begin{array}{cc}ColumnI& ColumnII\\ A.Triglycerides& 1.Galactose\\ B.Lactose& 2.Palmiticacid\\ C.RNA& 3.Glycerol\\ D.\beta -pleated& 4.Uracil\\ E.Beewax& 5.Secondarystructure\end{array}$

1. A - 5, B - 1, C- 4, D - 2, E - 3
2. A - 3, B - 1, C- 4, D - 2, E - 5
3. A - 2, B - 1, C- 4, D - 5, E - 3
4. A - 3, B - 1, C- 4, D - 5, E - 2
5. A - 4, B - 1, C- 5, D - 2, E - 3

Q.

Given below is the chemical formula of

1. stearic acid

2. glycerol

3. fumaric acid

4. galactose

5. palmitic acid

Q. Lipids are insoluble in water because lipids molecules are:

1. Hydrophilic
2. Hydrophobic
3. Neutral
4. Zwitter ions

Q.

Lipids are insoluble in water because lipids molecules are:

1. Hydrophilic

2. Neutral

3. Zwitter-ion

4. Hydrophobic

Q. Fatty acids without double bond are called fatty acids and with one or more C=C double bonds are known as fatty acids.

1. saturated
2. unsaturated
3. condensed
4. non-condensed