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WorksheetsLipid & lipoprotein analysis IP class
Total questions: 11
Worksheet time: 21mins
Monomers of Lipids include
amino acids
monosaccharides
nucleotides
glycerol and fatty acids
Which of the following is a main function of a lipid?
source of quick energy
stores energy, insulates us, and makes up the cell membrane
transport substances in and out of the cell
stores genetic information
Lipoproteins that contain mostly lipids are ____ dense than those containing mostly proteins.
less
more
equally
Which lipoprotein contains the highest percentage of protein?
chylomicrons
VLDLs
LDLs
HDLs
The scavenger pathway involving HDLs seeks to remove excess ___ from the bloodstream.
cholesterol
LDLs
VLDLs
chylomicrons
plaques
Absorbed lipids will not go through the liver if they are being transported via
chylomicrons
VLDLs
LDLs
HDLs
Affects lipid profiles (choose all possible answers)
Total Cholesterol
LDL-c
HDL-c
Triglyceride
Which of the following statements accurately describes the basic principle of the enzymatic colorimetric method used to measure serum triglycerides in clinical chemistry laboratories?
This method directly measures the absorbance of triglycerides at a specific wavelength after precipitation.
This measurement involves the breakdown of triglycerides by lipase followed by the quantification of the released glycerol.
This method requires ultracentrifugation to separate lipoprotein fractions before measurements can be made.
This method relies on an oxidation reaction catalyzed by cholesterol oxidase to produce a colored substance.
The measurement results represent the triglyceride levels found in the VLDL and chylomicron fractions.
In the calculation of LDL-C using the Friedewald equation, which of the following conditions makes the equation inaccurate and requires direct measurement of LDL-C? (Difficulty Level: Medium)
Total Cholesterol below 200 mg/dL
HDL-C below 40 mg/dL
Triglycerides above 400 mg/dL
Fasting time less than 10 hours
Total Cholesterol to HDL-C ratio greater than 5
A patient starts Statin therapy. Which expected change in the follow-up lipid panel most indicates the therapeutic efficacy of the drug in reducing atherosclerotic cardiovascular disease (ASCVD) risk? (Difficulty Level: Medium)
Significant increase in HDL-C levels
Significant decrease in VLDL levels
Significant decrease in LDL-C levels
Normalization of triglyceride levels
Decrease in the ratio of LDL-c to HDL-c
