Where may cartilage be found?
A. Ends of long bones
B. Outer ear
C. Trachea
D. All apply.
Answer: D
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Microtubules are strings of tubulin proteins that are formed from a
A) Dimer of ?-tubulin. B) Single string of ?-tubulin. C) Dimer of one ?-tubulin and one ?-tubulin. D) Hexamer of ?-tubulins and ?-tubulins twisted together.
The slowest category of nerve fibers are the
A. A fibers, and they conduct impulses at 10 meters per second. B. C fibers, and they conduct impulses at 1 meter per second. C. D fibers, and they conduct impulses at 0.1 meter per second. D. C fibers, and they conduct impulses at 100 meters per second. E. D fibers, and they conduct impulses at 0.01 meter per second.
The primary function of the distal convoluted tubule is
A) filtration. B) reabsorption. C) increased retention of sodium ions. D) secretion. E) None of the answers are correct.
The mitochondrion is the site of
A. glycolysis. B. the citric acid cycle. C. anaerobic respiration. D. lactic acid formation. E. the citric acid cycle and the electron-transport chain.