Đề 3 – Bài tập, đề thi trắc nghiệm online Hóa sinh lipid

A A. Primary energy storage in animals. B B. Structural component of cell membranes in bacteria. C C. Protective coating on leaves, fruits, and animal skin. D D. Precursor for steroid hormones in vertebrates.

A A. To hydrolyze triacylglycerols into fatty acids and glycerol. B B. To emulsify dietary fats, increasing the surface area for enzymatic digestion. C C. To transport fatty acids across the intestinal membrane. D D. To synthesize triacylglycerols in the intestinal cells.

A A. Triacylglycerols B B. Phospholipids C C. Steroids D D. Fatty acids

A A. Long-term energy storage B B. Structural components of cell membranes C C. Catalysis of biochemical reactions D D. Signaling molecules (hormones)

A A. Cholesterol B B. Palmitic acid C C. Glycerol D D. Sphingosine

A A. Saturated fatty acids contain phosphate groups, while unsaturated fatty acids do not. B B. Saturated fatty acids contain only single bonds between carbon atoms, while unsaturated fatty acids contain at least one double bond. C C. Unsaturated fatty acids are solid at room temperature, while saturated fatty acids are liquid. D D. Saturated fatty acids are synthesized in plants, while unsaturated fatty acids are synthesized in animals.

A A. Cholesterol esters B B. Triacylglycerols C C. Glucocerebroside D D. Gangliosides

A A. Hyperglycemia B B. Ketoacidosis C C. Hypoglycemia D D. Hyperlipidemia

A A. Glycerol and fatty acids B B. Sphingosine and fatty acids C C. Cholesterol and fatty acids D D. Isoprenoids

A A. 10 B B. 32 C C. 106 D D. 256

A A. HDL (High-Density Lipoprotein) B B. LDL (Low-Density Lipoprotein) C C. VLDL (Very-Low-Density Lipoprotein) D D. Chylomicrons

A A. Triacylglycerol B B. Cholesterol C C. Sphingomyelin D D. Phosphatidylserine

A A. To synthesize phospholipids from fatty acids and glycerol. B B. To hydrolyze phospholipids at the sn-2 position, releasing arachidonic acid. C C. To transport phospholipids between organelles. D D. To degrade sphingolipids in lysosomes.

A A. Glucose B B. Acetyl-CoA C C. Amino acids D D. Glycerol-3-phosphate

A A. Oleic acid B B. Palmitic acid C C. Arachidonic acid D D. Stearic acid

A A. To activate fatty acids in the cytoplasm. B B. To transport long-chain fatty acids into the mitochondrial matrix. C C. To inhibit beta-oxidation when energy is abundant. D D. To synthesize fatty acids in the mitochondria.

A A. Acetoacetate B B. Beta-hydroxybutyrate C C. Acetone D D. Pyruvate

A A. High carbohydrate intake B B. Well-fed state C C. Fasting or starvation D D. Insulin-stimulated conditions

A A. Retinal B B. Tocopherol (Vitamin E) C C. Phylloquinone (Vitamin K) D D. Calciferol (Vitamin D)

A A. HMG-CoA reductase B B. Acetyl-CoA carboxylase C C. Carnitine acyltransferase D D. Lipoprotein lipase

A A. Transporting triacylglycerols from the liver to adipose tissue. B B. Transporting cholesterol from peripheral tissues back to the liver. C C. Delivering dietary lipids from the intestine to the liver. D D. Synthesizing cholesterol in peripheral tissues.

A A. Acetyl-CoA carboxylase B B. HMG-CoA reductase C C. Fatty acid synthase D D. Cholesterol ester transfer protein (CETP)

A A. They are composed primarily of unsaturated fatty acids. B B. They are highly fluid and disordered regions of the membrane. C C. They are enriched in cholesterol and sphingolipids, making them more ordered and less fluid than surrounding membrane regions. D D. They are devoid of membrane proteins.

A A. Brain B B. Liver C C. Muscle D D. Adipose tissue

A A. Cholesterol B B. Prostaglandins C C. Triacylglycerols D D. Phosphatidylcholine

A A. Amylase B B. Lipase C C. Protease D D. Nuclease

A A. Enzymes that digest cholesterol in the small intestine. B B. Lipoprotein particles that transport dietary lipids from the intestine to other parts of the body. C C. Hormones that regulate lipid metabolism. D D. Structural components of cell membranes made of carbohydrates and lipids.

A A. Palmitic acid B B. Stearic acid C C. Linoleic acid (omega-6) D D. Oleic acid (omega-9)

A A. They are beneficial for cardiovascular health. B B. They have no significant impact on health. C C. They increase LDL cholesterol and decrease HDL cholesterol, increasing the risk of cardiovascular disease. D D. They primarily affect liver function but not cardiovascular health.

A A. Cytoplasm B B. Endoplasmic reticulum C C. Mitochondria D D. Golgi apparatus