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Functions of Lipids in Biological Systems

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Functions of Lipids in Biological Systems

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Questions and Answers

What is the primary function of phospholipids in cell membranes?

Provide insulation to nerve fibers

Regulate body temperature

Act as an efficient energy storage source

Form a lipid bilayer for structural support (correct)

Which type of lipids store more energy per gram compared to carbohydrates?

Steroid hormones

Cholesterol

Triglycerides (correct)

Phospholipids

What is the role of steroid hormones derived from cholesterol?

Provide structural support to cell membranes

Insulate and protect nerve fibers

Regulate various physiological processes (correct)

Facilitate efficient nerve impulse transmission

How do lipids help in temperature regulation in living organisms?

By acting as an insulating layer beneath the skin Signup and view all the answers

Which lipids play a significant role in cell signaling?

Cholesterol Signup and view all the answers

What is the function of myelin sheaths surrounding nerve cells?

Facilitate efficient nerve impulse transmission Signup and view all the answers

What is the role of lipids in cell signaling?

Serving as signaling molecules that regulate inflammation and immune responses Signup and view all the answers

How do lipids contribute to buoyancy in aquatic organisms?

Being in the form of lipoproteins facilitating movement in water Signup and view all the answers

During periods of fasting or energy deficit, what happens to stored triglycerides?

Are broken down to release energy Signup and view all the answers

What is the role of lecithin in the body?

Aids in the absorption of fats Signup and view all the answers

What is the function of saturated fatty acids in the body?

Raises LDL cholesterol levels Signup and view all the answers

Which lipid deficiency may lead to hemolysis, particularly in infants?

Choline deficiency Signup and view all the answers

What is the primary source of saturated fatty acids?

Meat and dairy products Signup and view all the answers

Which lipid is essential and must be obtained from our diet?

Linoleic acid Signup and view all the answers

What is the role of lecithin as an emulsifier in food products?

Aids in stable emulsion formation Signup and view all the answers