MCQ on Lipids Pdf : 

• Lipids are the general term for oils, fats, and lipids.
• This is a class of non-polar organic solvents that are insoluble in water but soluble in fatty solvents (alcohol, ether, chloroform, benzene). 
• It is usually divided into simple lipids, complex lipids, and derived lipids according to the main components of lipids.
• Lipids mainly include fats, phospholipids, and sterols.
• The main biological functions of lipids include storing energy, as lipids can be broken down to generate large amounts of energy. 
• Lipids also form the structural components of cell membranes and form various messenger and signaling molecules in the body.

Multiple Choice Questions on Lipids: 

1. What are lipids?

(1) Lipids are energy-rich organic, non-polar molecules.

(2) A lipid is any of various organic compounds that are insoluble in water

(3) Both of these 

(4) None of these 

Answer: 3

2. Lipids mainly include____________

(1) Fats, phospholipids, sterols

(2) Fats, phospholipids, cholesterol

(3) Fats, sex hormones, sterols

(4) Fats, phospholipids, sex hormones, cholesterol

Answer: 1

3. Rancidity of lipids of lipid-rich foodstuff is because of_______

(1) Reduction of fatty acids

(2) Hydrogenation of unsaturated fatty acids

(3) Dehydrogenation of saturated fatty acids

(4) Oxidation of fatty acids

Answer: 4

4. Which of the following is lipid______

(1) fat

(2) Phospholipids

(3) cholesterol

(4) All of these 

Answer: 4

5. Which of these is not lipid_____

(1) Polysaccharides

(2) fat

(3) Phospholipids

(4) cholesterol 

Answer: 1

6. Which of the following is derived lipids_________

(a) Terpenes

(b) Steroids

(c) Carotenoids

(d) All of the above

Answer: 4

7. Which of the following is not a biological function of lipids___________

(1) forming biofilms

(2) Regulate physiological metabolism

(3) store energy

(4) carry genetic information

Answer: 4

8. In the human body, it is not only an important component of cell membranes but also involved in lipid transport in the blood____________

(1) Phospholipids

(2) cholesterol

(3) fat

(4) Vitamin D

Answer: 2

9. What are the different types of lipids?

(1) triglycerides 

(2) phospholipids,

(3) sterols

(4) All of these 

Answer: 4

10. Phospholipids are suitable for forming cell membranes because_______

(1) They are hydrophobic

(2) They are hydrophilic

(3) They absorb water quickly　

(4) They are both hydrophilic and hydrophobic

Answer: 4

11. The biological function of lipids is________

(1) forming biofilms

(2) Regulate physiological metabolism

(3) store energy

(4) All of these 

Answer: 4

12. Out of the following groups of compounds, the group that belongs to lipids is________

(1) Enzymes, insulin, hemoglobin

(2) ribonucleic acid, deoxyribonucleic acid

(3) Glucose, lactate, sex hormones

(4) Cholesterol, sex hormones, vitamin

Answer: 4

13. Which of the following statements are correct about lipids __________

(1) Lipids are energy-rich organic, non-polar molecules. 

(2) These organic compounds contain carbon, hydrogen, and oxygen atoms that form a framework for the structure and function of living cells. 

(3) They are insoluble in water and only soluble in nonpolar solvents as water is a polar molecule.

(4) All of these 

Answer: 4

14. Which of the following is the function of lipids?

(1) Fats and oils are used as a storage form of energy in living organisms. 

(2) Lipids majorly form cell membranes. lipids like phospholipids and glycolipids play an essential role in cells by creating impermeable barriers. 

(3) Lipids also help in the absorption of fat-soluble vitamins.

(4) All of these 

Answer: 4

15. Which of the following is not a function of lipids in cells__________

(1) Maintenance of secondary sexual characteristics in higher animals

(2) It is an important substance that constitutes biological membranes such as cell membranes

(3) Reduce body heat loss and maintain a constant body temperature

(4) Catalyze the decomposition of energy substances in the body, which is beneficial for the body to resist cold weather

Answer: 4

16. Lipids have unique biological functions in cells. Among the biological functions of lipids below, the biological functions of phospholipids are_________

1. an important component of biological membranes; 

2.  they are molecules that store energy; 

3. they constitute the protection of the surface of the organism’s Layer 

4. is a good thermal insulator and has a thermal insulation effect. 

5. It has biological activity and regulates life activities.

(1)  ① ⑤

(2)  ⑤

(3)  ①

(4) ② ④

Answer: 3

17. The following are statements about lipids, which are correct___________

(1) Phospholipids are composed of three elements, C, H, and O, and are the main components of the tonoplast membrane

(2) The chemical nature of sex hormones is protein, which plays an important regulatory role in maintaining the reproductive process of organisms

(3) Fat exists only in the fat cells of animals, but not in other parts and plant cells

(4) The fat in penguins reduces heat loss and maintains a constant body temperature

Answer: 4

18. Carbohydrates and lipids are two important organic substances in cells, the related statement is false__________

(1) Lipids on cell membranes include phospholipids, cholesterol, etc.

(2) Starch, cellulose, and glycogen in sugars are all condensed from glucose

(3) The end products of starch and fat hydrolysis are carbon dioxide and water

(4) When sugars and fats of the same quality are completely broken down, sugars consume less oxygen

Answer: 3

19. What is lipolysis?

(1) Hydrolysis of triacylglycerol

(2) Formation of lipids

(3) Breakdown of ketone bodies

(4) Formation of ketone bodies

Answer: 1