Lipid Chemistry Quiz 2022-2023

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By ahmedsafaa

Quiz

Flashcards

29 Questions

Which organic compounds make up lipids?

How do lipids compare to carbohydrates in terms of hydrogen content?

In which solvents are lipids soluble?

What percentage of the body's energy requirement is fulfilled by lipids?

Where are lipids widely distributed in plants and animals?

What are some food sources rich in lipids?

What is the major unit of lipids?

Which statement best describes the biological significance of lipids?

What is the role of essential fatty acids in the body?

How do lipids protect the body from excessive heat or cold?

What are breakdown products of fats used for?

Which type of vitamins require lipids for absorption?

What is the main storage form of fatty acids and chemical energy?

Which fatty acids are typically derived from plant sources and are liquid at room temperature?

Which type of lipids contain a phosphate group and are essential for constructing biological membranes?

What are the sources of essential fatty acids that must be obtained from the diet?

What is the main function of glycolipids?

Which type of fatty acids have no double bonds and are usually derived from animal sources?

What is the classification of lipids that include simple and complex types?

Which type of lipids are insoluble in water but soluble in fat solvents?

What are the two essential fatty acids for humans?

Which type of vitamins are usually stored in the body?

What is the main component of triacylglycerol (TAG)?

Which of the following is NOT a component of lipoproteins?

What is the most important animal sterol?

Where is cholesterol widely distributed in the body?

What is the important biological function of cholesterol related to membrane lipids?

How is vitamin D3 synthesized in the body from cholesterol?

7

Summary

  • Vitamins A, D, E, and K are fat-soluble vitamins, requiring lipids for absorption
  • Lipids are classified into simple and complex types
  • Simple lipids are esters of fatty acids and alcohols
  • Triacylglycerol (TAG) is a simple lipid consisting of glycerol and three fatty acids, functioning as the main storage form of fatty acids and chemical energy
  • Triacylglycerol is insoluble in water but soluble in fat solvents and exists in solid (fats) or liquid (oils) form depending on fatty acid composition
  • Lipids are also classified as saturated, unsaturated, monounsaturated, polyunsaturated, and essential fatty acids
  • Essential fatty acids are not produced by the body and must be obtained from the diet, with linoleic acid and alpha-linolenic acid being essential for humans
  • Saturated fatty acids are usually derived from animal sources, solid at room temperature, and have no double bonds, such as palmitic acid, while monounsaturated and polyunsaturated fatty acids are typically derived from plant sources and are liquid at room temperature
  • Sources of fatty acids include saturated (milk, cheese, butter) and unsaturated (olives, avocados) forms, with polyunsaturated and omega-3 and omega-6 fatty acids having particular health benefits
  • Complex lipids include phospholipids, glycolipids, and other complex lipids
  • Phospholipids, such as lecithin, contain a phosphate group and are essential for constructing biological membranes and functioning as a carrier for triglycerides and cholesterol in the plasma
  • Glycolipids, found mainly in the myelin sheath and red blood cell membranes, act as cell membrane receptors and provide recognition properties.

Description

By Ahmed Safaa Telegram channel : https://t.me/mcqb2

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