Lipids: Definition and Functions

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Questions and Answers

Which type of lipid is an ester of fatty acids with various alcohols and an additional group?

  • Compound Lipid (correct)
  • Simple Lipid
  • Derived Lipid
  • Complex Lipid

What is the molecular formula for saturated fatty acids?

  • CnHnCOOH
  • CnH2n-1COOH
  • CnH2n+1COOH (correct)
  • CnH2nCOOH

What function do polyunsaturated fatty acids (PUFAs) serve in the body?

  • Promotion of Atherosclerosis
  • Used for Prostaglandin synthesis (correct)
  • Contribution to bone density
  • Major components of energy storage

Which fatty acid cannot be synthesized by the body and must be supplied by the diet?

<p>Linoleic acid (D)</p> Signup and view all the answers

What is the main difference between simple lipids and compound lipids?

<p>Presence of additional group (B)</p> Signup and view all the answers

Which of the following is a common property of lipids?

<p>Solubility in nonpolar solvents (B)</p> Signup and view all the answers

What is the main function of lipids in providing shape and contour to the body?

<p>Serving as thermal insulators (C)</p> Signup and view all the answers

Which type of compounds are included in the group of lipids?

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

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

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

What do combinations of lipid and protein (lipoproteins) serve as in the body?

<p>Structural components of biomembranes (A)</p> Signup and view all the answers

Which of the following is NOT a function of lipids?

<p>Serving as the main source of energy for the body (A)</p> Signup and view all the answers

What is the primary composition of biomembranes?

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

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

<p>Cirrhosis (D)</p> Signup and view all the answers

What is the primary function of lipoproteins in the body?

<p>Transporting lipids in the blood (B)</p> Signup and view all the answers

Which compound is NOT included in the group of lipids?

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

Which of the following is a characteristic of small chain fatty acids?

<p>Contain 2-4 carbons (A)</p> Signup and view all the answers

What is the distinguishing feature of unsaturated fatty acids?

<p>Contain one double bond (B)</p> Signup and view all the answers

Which type of fatty acids contributes to the fluidity of membranes?

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

What is the function of polyunsaturated fatty acids (PUFAs) in the body?

<p>Used for Prostaglandin synthesis (D)</p> Signup and view all the answers

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