Carnitine can inhibit the oxidative decomposition of fatty acids.（）
举一反三
- Carnitine is: A: an essential cofactor for the citric acid cycle. B: essential for intracellular transport of fatty acids. C: one of the amino acids commonly found in protein. D: present only in carnivorous animals.
- Some athletes believe that dietary carnitine supplements will enhance their ability to perform aerobic exercise. Which statement BEST describes the “scientific” basis of this belief? A: Carnitine is required in the transport of medium and long-chain fatty acids into the mitochondrial matrix, and so increasing the amount of carnitine will increase the rate of transport. B: Carnitine activates carnitine-acyl transferase-1 (CAT-I) thereby increasing the rate of transport of fatty acids into the mitochondrial matrix. C: Carnitine levels in the cytoplasm are reduced when large amounts of fatty acyl carnitine are transported into the mitochondrial matrix. D: Carnitine enhances the activation of fatty acids to fatty acyl-CoA, thereby increasing the rate of their transport into the mitochondrial matrix.
- The synthesis of fatty acids USES carnitine to transport acetyl-CoA from the mitochondria to the cytoplasm.（）
- What would be the consequences of inhibiting the carnitine shuttle which transports fatty acids into the mitochondria? A: accumulation of fat droplets in liver and muscle. B: Increase in blood glucose concentration. C: Increase in fatty acid synthesis in the liver. D: Low levels of long chain free fatty acids in the blood.
- The average molecular weight of oil can be reflected by measuring ( ) A: Saponification value B: Peroxide value C: Free fatty acids D: Trans fatty acids