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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?

Linoleic acid (D) Signup and view all the answers

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

Presence of additional group (B) Signup and view all the answers

Which of the following is a common property of lipids?

Solubility in nonpolar solvents (B) Signup and view all the answers

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

Serving as thermal insulators (C) Signup and view all the answers

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

Steroids (C) Signup and view all the answers

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

Fatty liver (C) Signup and view all the answers

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

Structural components of biomembranes (A) Signup and view all the answers

Which of the following is NOT a function of lipids?

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

What is the primary composition of biomembranes?

Phospholipids (B) Signup and view all the answers

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

Cirrhosis (D) Signup and view all the answers

What is the primary function of lipoproteins in the body?

Transporting lipids in the blood (B) Signup and view all the answers

Which compound is NOT included in the group of lipids?

Proteins (C) Signup and view all the answers

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

Contain 2-4 carbons (A) Signup and view all the answers

What is the distinguishing feature of unsaturated fatty acids?

Contain one double bond (B) Signup and view all the answers

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

Polyunsaturated acids (A) Signup and view all the answers

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

Used for Prostaglandin synthesis (D) Signup and view all the answers