Free Lipids MCQs with Answers
71 Lipids MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Lipids include fats, oils, waxes, phospholipids and steroids, which are largely insoluble in water and soluble in organic solvents. Coverage includes glycerol and fatty acids, ester bond formation, saturated and unsaturated fats, triglyceride functions, and phospholipids in cell membranes.
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71 questions · page 2 of 4
- A. Hydrophilic Carbohydrates
- B. Hydrophobic fats.
- C. Both a and b
- D. None of these
Explanation: Membrane structure is based mainly on amphipathic lipids, whose hydrophobic portions form the interior barrier and whose hydrophilic…
Correct answer: Hydrophobic fats.- A. Within glycerol only
- B. Within fatty acids only
- C. Between fatty acids and glycerol
- D. Within fatty acids and within glycerol
Explanation: The correct answer is 'within fatty acids only.' In unsaturated lipid molecules, carbon-carbon double bonds are present within the fatty…
Correct answer: Within fatty acids only- A. Steroid
- B. Carotenoid
- C. Acylglycerol
- D. Phospholipid
Explanation: The correct answer is acylglycerol. In a condensation reaction, fatty acids react with glycerol to form acylglycerols (such as…
Correct answer: Acylglycerol- A. Chylomicrons
- B. VLDL
- C. LDL
- D. HDL
Explanation: LDL, or low-density lipoprotein, is often referred to as 'bad' cholesterol because it transports cholesterol to the arteries, where it can…
Correct answer: LDL- A. Sphingolipids
- B. Phospholipids
- C. Phosphodiester
- D. None of these
Explanation: Phospholipids are major components of cell membranes and include nitrogenous bases like choline and serine in their head groups.
Correct answer: Phospholipids- A. 1, 2 and 3
- B. 2, 1 and 4
- C. 1 and 4 only
- D. 2 and 3 only
Explanation: Triglycerides are formed by linking fatty acids with an ester linkage to three alcohol groups in glycerol.
Correct answer: 2 and 3 only- A. Vitamin A
- B. Vitamin B
- C. Vitamin C
- D. Vitamin D
Explanation: d) Vitamin D:Ergocalciferol is the name of Vitamin D2. It is a type of vitamin D that is synthesized in plants and is also known as…
Correct answer: Vitamin D- A. Replacement of a corner fatty acid in acyl glycerol by phosphate group
- B. Their place of occurrence
- C. Phospholipid is a lipid and acyl glycerol is not
- D. Difference in number of C in fatty acid chains
- E. They are the same
Explanation: Explanation for this question will be added soon.
Correct answer: Replacement of a corner fatty acid in acyl glycerol by phosphate group- A. Terpenes
- B. Terpenoids
- C. Waxes
- D. Carotenoids
- E. Unsaturated acyl glycerol
Explanation: Explanation for this question will be added soon.
Correct answer: Waxes- A. Four 6-C rings
- B. Three 6-C rings and two 5-C rings
- C. Three 6-C rings and one 5-C ring
- D. Three 6-C rings only
- E. Two 6-C rings and one 5-C ring
Explanation: Explanation for this question will be added soon.
Correct answer: Three 6-C rings and one 5-C ring- A. A
- B. B
- C. K
- D. D
Explanation: The explanation for this question will be added soon.
Correct answer: K- A. Solid
- B. Liquid
- C. Gas
- D. Plasma
Explanation: Option A is correct since animal fats most commonly include, saturated fats that have a high melting point, and are solids at room…
Correct answer: Solid- A. Waxes
- B. Fats
- C. Both Options A and B are correct
- D. None of these options are correct
Explanation: Esters of fatty acids with higher alcohols other than glycerol are said to be waxes.
Correct answer: Waxes- A. Glycogen
- B. Starch
- C. Fat
- D. Cholesterol
Explanation: Fat, or adipose tissue, is the molecule used by most animals for long-term energy storage.
Correct answer: Fat- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: Triglyceride being non-polar do not dissolve in water. They store a lot of energy in them and are hydrolysed to release water.
Correct answer: Option A- A. As insulating material
- B. Providing more energy
- C. As exoskeleton
- D. As cuticle of leaves
Explanation: Lipids are an energy-rich macromolecule, and the carbon-hydrogen bonds in lipids store a lot of energy.
Correct answer: Providing more energy- A. High proportion of oxygen
- B. High C-O ratio
- C. Low proportion of Carbon
- D. High proportion of C-H
Explanation: The normal oxidative process yields approximately 9 kcal per gram of fats, and approximately 4 kcal per gram for carbohydrates.
Correct answer: High proportion of C-H- A. Saponification number
- B. Saponification
- C. Both Options A and B are correct
- D. None of these options are correct
Explanation: Saponification is a process involving the hydrolysis of fats on its reaction with alkali, thereby leading to the formation of salts of…
Correct answer: Saponification- A. Waxes
- B. Fats
- C. Both A and B
- D. None of these
Explanation: Fats (acylglycerol) are esters of fatty acids and glycerol.Natural waxes are esters of long-chain fatty acids and long-chain alcohols.
Correct answer: Waxes- A. Acetic acid
- B. Oleic acid
- C. Palmitic acid
- D. All of these options are correct
Explanation: Palmitic acid is a saturated fatty acid (thus it has a high melting point) and is also soluble in organic solvents.
Correct answer: Palmitic acid