When the process of meiosis is complete, the result is
A. two daughter cells that are diploid.
B. two daughter cells that are haploid.
C. four daughter cells that are diploid.
D. four daughter cells that are haploid.
D
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In a newborn infant, torticollis resulting from a tissue tumor most likely involves which of the following muscles?
A) sternocleidomastoid B) trapezius C) scalenus anterior D) semispinalis cervicis E) levator scapulae
Mesangial cells help keep the basement membrane clean by
A. secreting emulsifying agents that dissolve trapped particles. B. engulfing macromolecules caught in its basement membrane. C. opening larger pores in the membrane so that trapped particles move accross. D. secreting antibodies that attack the molecules caught in the endothelium.
The hormone secreted in large amounts by the thyroid gland that contains four iodine ions is __________.
a. calcitonin b. triiodothyronine c. thyroglobulin d. thyroxine
Acid-base buffer systems minimize pH changes by
A) increasing breathing rate. B) converting weak acids to strong acids. C) promoting the excretion of hydrogen ions. D) converting strong acids to weak acids.