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Biochemistry Chapter 10: Lipids

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Questions and Answers

What is the primary basis for classifying lipids as a heterogeneous group?

Biological sources
Solubility properties (correct)
Structural properties
Functional roles

What is a characteristic of lipids that contain fatty acids?

Being found in membranes
Being derived from C-atoms
Being soluble in water
Being amphipathic (correct)

Which of the following is an example of a derived lipid?

Triacylglycerol
Cholesterol (correct)
Phospholipid
Fatty acid

What is the primary function of storage lipids?

To store energy (A) Signup and view all the answers

What is a characteristic of membrane lipids?

Being amphipathic (A) Signup and view all the answers

What is the term for lipids that are soluble in organic solvents but not in water?

Insoluble (C) Signup and view all the answers

What is the typical number of carbon atoms in the hydrocarbon chain of fatty acids?

Between 4 to 36 carbons (C) Signup and view all the answers

What is the difference between saturated and unsaturated fatty acids?

Saturated fatty acids have single bonds, while unsaturated fatty acids have double bonds (C) Signup and view all the answers

What is the common name of the fatty acid with the shorthand notation 16:0?

Palmitic acid (B) Signup and view all the answers

What is the effect of cis double bonds on the structure of fatty acids?

Cis double bonds introduce kinks in the structure (C) Signup and view all the answers

What is the effect of unsaturation on the melting point of fatty acids?

Unsaturation decreases the melting point of fatty acids (B) Signup and view all the answers

What is the difference between omega-6 and omega-3 polyunsaturated fatty acids?

Omega-6 and omega-3 differ in the location of the first double bond (C) Signup and view all the answers

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

They are required for cellular function and must be obtained through the diet (D) Signup and view all the answers

What is the difference between trans and cis fatty acids?

Trans fatty acids have a double bond on the opposite side of the carbon chain (B) Signup and view all the answers

What is the result of consuming trans fatty acids?

It increases the risk of cardiovascular disease (A) Signup and view all the answers

What is the typical configuration of double bonds in unsaturated fatty acids?

Mostly cis, with some trans (A) Signup and view all the answers

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