The ________ skeleton provides mobility.
Fill in the blank(s) with the appropriate word(s).
appendicular
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Potassium ions enter the lumen of the ________ by the process of active transport.
A. distal convoluted tubule B. proximal convoluted tubule C. renal corpuscle D. collecting duct E. loop of Henle
The testes first begin to develop in the abdominal cavity.
a. true b. false
Which statement best describes enzyme function?
A) Enzymes chemically alter both the reactants and products. B) Enzymes speed chemical reactions by lowering the activation energy. C) Enzymes can perform catabolic reactions only. D) One enzyme can work on thousands of different substrates.
In addition to a drop in blood calcium concentration, a symptom of hypoparathyroidism is
A. increased PTH secretion. B. kidney stones. C. a rise in vitamin D concentration. D. muscle cramps.