What is the ratio of fatty acids to glycerol in neutral fats?
A) 1:1
B) 2:1
C) 3:1
D) 4:1
C) 3:1
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Which of the following statements regarding contraction of a skeletal muscle fiber is TRUE?
A. Some contractions occur without cross-bridge activation. B. Contracting muscle fibers do not always shorten. C. Contraction only occurs following summation of action potentials from many motor neurons. D. Contraction does not always require the occurrence of an action potential. E. Thick filaments shorten when muscle cells contract.
If oxygen is in short supply, the activity of the electron transport chain increases in order to compensate
Indicate whether this statement is true or false.
If more glucose is consumed than is needed, the glucose can be
A. converted to an essential amino acid so that protein synthesis can increase. B. converted to acetyl CoA that is then used to synthesize triglycerides for storage. C. broken down to 2 NADH molecules that can enter the citric acid cycle. D. deaminated by the liver and sent to the kidney for excretion in the urine.
T3 and T4 are stored in the lumen of thyroid follicles as part of the _____ molecule
A. thyrotropin B. thyroid-stimulating hormone C. thyroxine-binding protein D. thyroglobulin E. calcitonin