Parasympathetic fibers of the vagus nerve ________ digestion, while sympathetic neurons from the celiac ganglion ________ digestion.
A. suppress; stimulate
B. stimulate; suppress
Answer: B
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Endochondral ossification begins with a(n) ________ model.
A. membranous B. dense connective tissue C. hyaline cartilage D. osteoid E. mesenchyme
Activated calmodulin functions to activate or inactivate cytosolic enzymes
Indicate whether the statement is true or false.
Saturation occurs when
A. intramolecular interactions are disrupted in the enzyme, decreasing its efficiency and decreasing reaction rate. B. the substrate is denatured and the enzyme cannot catalyze any changes in its structure. C. enzymes become fatigued and can no longer catalyze changes in the substrate. D. there is so much enzyme present that the reaction rate decreases if more is added. E. all enzymes are busy and further increases in substrate concentration will not increase reaction rate.
When glucose is metabolized in the absence of oxygen, one of the end products is ________.
A. citric acid B. pyruvate C. ketone bodies D. nitric acid E. lactate