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Lipids: Types and Biological Functions

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Questions and Answers

What is the primary function of waxes in vertebrates?

To protect and provide pliability for hair and skin (correct)

To act as emulsifiers for dietary lipids

To waterproof feathers in birds

To provide storage of metabolic fuel

What is the primary role of bile acids/salts in the small intestine?

To act as a metabolic fuel

To synthesize cholesterol

To store and concentrate in the gallbladder

To emulsify dietary lipids (correct)

What is the primary function of waxes in tropical plants and ivy?

To emulsify dietary lipids

To act as a storage lipid

To protect and provide pliability for skin

To provide waterproofing (correct)

Where are bile acids/salts synthesized?

In the liver Signup and view all the answers

What is the primary function of waxes in birds?

To waterproof feathers Signup and view all the answers

What is the primary role of bile acids/salts in the digestive process?

To act as emulsifiers for dietary lipids Signup and view all the answers

Which of the following is NOT a class of lipids discussed in the text?

Prostaglandins Signup and view all the answers

What is the primary function of triacylglycerols in biological systems?

To store energy Signup and view all the answers

Which of the following statements about fatty acids is correct?

Fatty acids can have double bonds Signup and view all the answers

Based on the classification methods mentioned in the text, which of the following is NOT a method used to classify lipids?

Molecular weight Signup and view all the answers

Which of the following lipids are primarily found in cell membranes?

Phospholipids Signup and view all the answers

Which of the following is a biological function of lipids related to signaling?

Acting as paracrine hormones Signup and view all the answers

Which biological function of lipids is related to their hydrophobic nature?

Providing water repellency and preventing excessive wetting Signup and view all the answers

Which of the following is a biological function of lipids related to their role as pigments?

Contributing to the color of fruits and vegetables Signup and view all the answers

Which of the following is a biological function of lipids related to their role as precursors?

Acting as precursors for hormones like vitamin A and D Signup and view all the answers

Which of the following is a biological function of lipids related to their role in blood clotting?

Acting as the cofactor vitamin K in blood clot formation Signup and view all the answers

Which of the following is a biological function of lipids related to their role in growth and development?

Acting as signaling molecules like steroid hormones and growth factors Signup and view all the answers