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Several enzymes, for example, hepatic lipase and lipoprotein lipase, can bind to lipoproteins. There are mutant variants of these enzymes that bind lipoproteins but are not catalytically active. Cells expressing these mutants can still absorb cholesterol. What does that tell us about the functions of these proteins in cholesterol absorption? A. The proteins are acting as receptors for lipoproteins B. Hydrolysis of neutral lipids is not required C.A and B D. None of the above

Several enzymes, for example, hepatic lipase and lipoprotein lipase, can bind to lipoproteins. There are mutant variants of these enzymes that bind lipoproteins but are not catalytically active. Cells expressing these mutants can still absorb cholesterol. What does that tell us about the functions of these proteins in cholesterol absorption? A. The proteins are acting as receptors for lipoproteins B. Hydrolysis of neutral lipids is not required C.A and B D. None of the above

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Several enzymes, for example, hepatic lipase and lipoprotein lipase, can bind to lipoproteins. There are mutant variants of these enzymes that bind lipoproteins but are not catalytically active. Cells expressing these mutants can still absorb cholesterol. What does that tell us about the functions of these proteins in cholesterol absorption? A. The proteins are acting as receptors for lipoproteins B. Hydrolysis of neutral lipids is not required C. A and B D. None of the above
Transcribed Image Text:Several enzymes, for example, hepatic lipase and lipoprotein lipase, can bind to lipoproteins. There are mutant variants of these enzymes that bind lipoproteins but are not catalytically active. Cells expressing these mutants can still absorb cholesterol. What does that tell us about the functions of these proteins in cholesterol absorption? A. The proteins are acting as receptors for lipoproteins B. Hydrolysis of neutral lipids is not required C. A and B D. None of the above
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