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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- A. contain more oxygen atoms per carbon
- B. are more highly reduced, with more carbon-hydrogen bonds per gram
- C. are soluble in water
- D. are broken down without any oxygen
Explanation: Energy is released when carbon-hydrogen bonds are oxidised, and a fatty acid chain is almost entirely carbon and hydrogen with very little…
Correct answer: are more highly reduced, with more carbon-hydrogen bonds per gram- A. two hydrophobic ends
- B. a hydrophilic head and hydrophobic tails
- C. two hydrophilic ends
- D. no charged groups at all
Explanation: The phosphate head is charged and interacts with water, while the two fatty acid tails are non-polar and are excluded from it.
Correct answer: a hydrophilic head and hydrophobic tails- A. contains one or more carbon to carbon double bonds in its hydrocarbon chain
- B. contains more hydrogen atoms per carbon
- C. has no carboxyl group
- D. cannot be used in respiration
Explanation: Each double bond puts a kink in the chain, so the molecules pack together less closely and the fat has a lower melting point, which is why…
Correct answer: contains one or more carbon to carbon double bonds in its hydrocarbon chain- A. is the main energy store of adipose tissue
- B. carries oxygen in the blood
- C. is the precursor of the steroid sex hormones, bile salts and vitamin D
- D. forms the walls of plant cells
Explanation: Cholesterol is a steroid and the starting material for testosterone, oestrogen, bile salts and vitamin D, and it also sits between the…
Correct answer: is the precursor of the steroid sex hormones, bile salts and vitamin D- A. hydrolysis, forming glycosidic bonds
- B. condensation, forming ester bonds and releasing three molecules of water
- C. oxidation, forming peptide bonds
- D. reduction, forming hydrogen bonds
Explanation: Each of the three hydroxyl groups of glycerol reacts with the carboxyl group of a fatty acid, so three ester bonds form and three water…
Correct answer: condensation, forming ester bonds and releasing three molecules of water- A. Triglyceride
- B. Phospholipid
- C. Steroid
- D. Wax
Explanation: Phospholipids form the lipid bilayer of cell membranes due to their amphipathic nature (hydrophilic head, hydrophobic tails).
Correct answer: Phospholipid- A. Vitamin C
- B. Vitamin B12
- C. Vitamin D
- D. Vitamin B6
Explanation: Vitamins A, D, E, and K are fat-soluble. Vitamin C and B vitamins are water-soluble.
Correct answer: Vitamin D- A. Epidermis
- B. Adipose tissue
- C. Liver
- D. Epithelium
Explanation: Most long-term fat storage occurs in adipose tissue, whose cells store triglycerides in large lipid droplets and also provide insulation…
Correct answer: Adipose tissue- A. Hormones
- B. Chemicals
- C. Cholesterol
- D. Carbohydrates
Explanation: Steroids are a class of lipids formed from the four-ring structure of cholesterol, which serves as their main precursor.
Correct answer: Cholesterol- A. cholesterol
- B. waxes
- C. chitin
- D. all of these
Explanation: Waxes are lipids that form water-resistant protective coatings on the surfaces of leaves and fruits, reducing water loss and blocking…
Correct answer: waxes- A. paralysis
- B. oedema
- C. mental retardation
- D. all of these
Explanation: In some lipid-storage disorders, lipids accumulate in brain cells and damage neurons, causing progressive mental impairment or mental…
Correct answer: mental retardation- A. Natural lipid
- B. Neutral lipid
- C. Neutral wax
- D. All of these
Explanation: A triglyceride is formed when glycerol combines with three fatty acids, and it is called a neutral lipid because it has no charged ionic…
Correct answer: Neutral lipid- A. Organic acid
- B. Alcohol
- C. Water
- D. Sugar
Explanation: During esterification, the hydroxyl group that remains in the ester-forming reaction comes from the alcohol, while the acid contributes…
Correct answer: Alcohol- A. C-6
- B. C-25
- C. C-26
- D. C-30
Explanation: Fatty acids in ordinary acylglycerols generally have an even number of carbon atoms because they are assembled from two-carbon units…
Correct answer: C-25- A. Liquids
- B. Gases
- C. Solids
- D. None of these
Explanation: Animal fats usually contain a high proportion of saturated fatty acids, whose straight chains pack closely and remain solid at room…
Correct answer: Solids- A. Acetic acid
- B. Butyric acid
- C. Palmitic acid
- D. All have same
Explanation: Palmitic acid has the longest hydrocarbon chain among the choices, so its nonpolar part interacts well with organic solvents, and its…
Correct answer: Palmitic acid- A. They contain double bond
- B. They are usually solid at room temperature
- C. They are lighter than water
- D. Their specific gravity is less than 1Exploring Local Private K-12 Schools
Explanation: Unsaturated fatty acids contain one or more double bonds that introduce bends in their chains, preventing tight packing and making their…
Correct answer: They are usually solid at room temperature- A. Saturated Fatty acid
- B. Unsaturated fatty acid
- C. Oleic Acid
- D. Plamitic acid
Explanation: Oleic acid is an 18-carbon fatty acid with one double bond, written as C18:1.
Correct answer: Oleic Acid- A. C-C bonds
- B. C-H bonds
- C. C-N bonds
- D. C-O bonds
Explanation: Lipids contain many reduced C-H bonds, and oxidation of these bonds releases substantial energy; this is why fats yield about twice as…
Correct answer: C-H bonds- A. Water
- B. Ether
- C. All solvents
- D. Not in any of the above
Explanation: Lipids are largely nonpolar, so they dissolve in nonpolar organic solvents such as ether but do not dissolve well in polar water.
Correct answer: EtherLipids MCQs: common questions
Are these Lipids MCQs free?
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How many Lipids MCQs are on this page?
There are 71 Lipids MCQs in the Biology bank, shown 20 to a page with the correct answer and an explanation on each.
Does every Lipids MCQ have an explanation?
Yes. Each Lipids question shows the correct option and a written explanation of why it is correct, so a wrong answer teaches you something rather than just being marked wrong.
Can I take a timed Lipids test?
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