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Worksheet 5.2

Worksheet 5.2

Q 1 50 / 50 points Place the following steps of lipid transport and delivery in the correct order: Results for item 2. 2 25 / 25 points Match the term with the correct descriptor: Very low density lipids Results for item 3. 3 25 / 25 points Correct answer:

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Correct Order Answer: Chylomicrons formed in the mucosal cells pass first into the lymph. Correct Order Answer: The enzyme lipoprotein lipase breaks down the triglycerides in chylomicrons into fatty acids and glycerol allowing them to enter the surrounding cells. Correct Order Answer: The remaining chylomicrons consists mostly of cholesterol and protein. These travel to the liver disassembled. Correct Order Answer: VLDLs are made in the liver and transport lipids away from the liver. Correct Order Answer: Remaining VLDL particles after the triglycerides have been removed are transformed in the blood into LDL particles. Correct Order Answer: LDL particles bind to a protein on the cell membrane (LDL receptor) allowing the whole LDL particle to be removed from circulation and enter the cell where the cholesterol and other components can be used. Correct Order Answer: HDLs pick up cholesterol from other body lipoproteins and body cells and return it to the liver. Some cholesterol is broken down and some is transferred to organs with high energy requirements.