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WorksheetsLipid Metabolism Quiz
Total questions: 20
Worksheet time: 10mins
What is the main energy source for hibernating animals, such as grizzly bears?
Carbohydrates
Fats
Glucose
Proteins
Which of the following is a characteristic of fats as an energy source compared to polysaccharides?
Quick delivery
Carry less water
Short-term energy
Carbon are less reduced
What is the function of bile acids in the absorption of dietary lipids?
Transport lipids to tissues
Activate lipolysis
Synthesize cholesterol
Emulsify dietary lipids
Which lipoprotein particle carries dietary lipids from the intestine to the tissues?
Chylomicrons
HDL
LDL
VLDL
What is the main function of lipoprotein lipase in the body?
Synthesize bile acids
Transport cholesterol to tissues
Break down triacylglycerols into fatty acids and glycerol
Remove excess cholesterol from cells
Which hormone activates the process of lipolysis in a fasting state?
Insulin
Glucagon
Cortisol
Estrogen
What is the fate of glycerol released during lipolysis?
Forms ketone bodies
Converted to cholesterol
Enters glycolysis
Stored as glycogen
Where does beta oxidation of fatty acids occur?
Cytosol
Endoplasmic reticulum
Golgi apparatus
Mitochondrial matrix
What is the main product of beta oxidation of fatty acids?
Pyruvate
Glucose
Acetyl-CoA
Glycerol
What is the primary function of ketone bodies in the body?
Fuel for other tissues
Energy storage
Cell membrane flexibility
Precursor for steroid hormones
Which enzyme is the target for pharmaceutical drugs to combat high levels of cholesterol?
HMG CoA reductase
Acetyl-CoA carboxylase
Fatty acid synthase
Lipoprotein lipase
What is the main function of cholesterol in cells?
Energy storage
Cofactor for enzymes
Transporter
Constituent of membranes
Where is most of the cholesterol synthesized in vertebrates?
Adipose tissue
Muscle cells
Liver
Pancreas
What is the genetic mutation that leads to familial hypercholesterolemia?
Excessive bile acid synthesis
Overactive lipoprotein lipase
Defective LDL receptor
Impaired insulin production
What happens to the LDL receptors on the surface of cells when HMG-CoA is inhibited?
Transform into HDL receptors
No change
Increase in number
Decrease in number
Which is the most common Apo protein on the surface of Chylomicrons?
ApoB
Apo100
ApoC-II
ApoE
Which lipoprotein removes excess cholesterol from cells taking it to the liver?
LDL
HDL
The entry of FA and cholesterol into cells is via__________
Ion transport
Antiport pathways
Receptor mediated endocytosis
Protein transporters
Glucagon activates HSL what does it stand for?
Hormone sensitive lipolipase
Hormone sensitive lipase
Hormone secreted lipolipase
Hormone secreted lipase
Which CPT removes the carnitine resulting in FA-acyl CoA
CPT1
CPT2
CPT3
CPT4
