Chemistry of Lipids and Their Functions
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Questions and Answers

What is the common property shared by lipids?

  • Solubility in both water and nonpolar solvents
  • Insolubility in water and solubility in nonpolar solvents (correct)
  • Solubility in water
  • Insolubility in nonpolar solvents

What is the main nature of the structural components of biomembranes?

  • Steroids
  • Phospholipids (correct)
  • Saturated fats
  • Unsaturated fats

Which function do lipids primarily serve in the subcutaneous tissues and around certain organs?

  • Structural components of biomembranes
  • Thermal insulation (correct)
  • Supply of essential fatty acids
  • Storage form of energy

Where do combinations of lipid and protein (lipoproteins) serve as important cellular constituents?

<p>In the mitochondria (B)</p> Signup and view all the answers

Which of the following diseases is associated with abnormal chemistry or metabolism of lipids?

<p>Obesity (C)</p> Signup and view all the answers

What are the esters of fatty acids with glycerol known as?

<p>Fats (A)</p> Signup and view all the answers

Which type of fatty acids contain no double bonds and are solid at room temperature?

<p>Saturated fatty acids (D)</p> Signup and view all the answers

What is the general formula for saturated fatty acids?

<p>$CnH2n+1COOH$ (C)</p> Signup and view all the answers

Which type of fatty acids contain one double bond?

<p>Monounsaturated fatty acids (C)</p> Signup and view all the answers

What are the lipid molecules derived from simple/compound lipids on hydrolysis known as?

<p>Vitamins (A,D,E,K) (B)</p> Signup and view all the answers

Which of the following is NOT a function of lipids?

<p>Supply the body with water-soluble vitamins (A)</p> Signup and view all the answers

Which statement about lipids is true?

<p>They are not a preferable source of energy compared to carbohydrates (C)</p> Signup and view all the answers

What is the most common property shared by lipids?

<p>Insolubility in water (C)</p> Signup and view all the answers

In which cellular constituents do combinations of lipid and protein (lipoproteins) occur?

<p>Both in the cell membrane and in the mitochondria (B)</p> Signup and view all the answers

Which disease is NOT associated with abnormal chemistry or metabolism of lipids?

<p>Hypertension (B)</p> Signup and view all the answers

Which type of fatty acids may be envisaged as based on acetic acid (CH3 —COOH) as the first member of the series?

<p>Saturated fatty acids (D)</p> Signup and view all the answers

What is the molecular formula for saturated fatty acids?

<p>CnH2n+1COOH (D)</p> Signup and view all the answers

Which type of fatty acids contain one double bond?

<p>Monounsaturated fatty acids (C)</p> Signup and view all the answers

What are the esters of fatty acids with glycerol known as?

<p>Fats (B)</p> Signup and view all the answers

Which type of fatty acids are solid at room temperature except if they are short chained?

<p>Saturated fatty acids (B)</p> Signup and view all the answers
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