Which one of the following hormones stimulates the production of testosterone in males?
A) prolactin
B) LH
C) aldosterone
D) FSH
E) growth hormone
B
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Which of the following organs or tissues can ONLY use glucose as a source of energy?
A. heart B. skeletal muscles like the bicep C. brain D. liver E. spleen
Which event would trigger the release of ADH?
a. a drop in blood pressure below normal b. elevated blood glucose levels c. the process of childbirth d. stimulation of the anterior pituitary e. growth promoting factors
Sperm pass through several stages during their development. What is the earliest stage in which the cell becomes haploid?
a. sperm b. secondary spermatocyte c. spermatogonium d. spermatid
Genes encoding the blood proteins myoglobin and hemoglobin are derived from a common gene ancestor. These proteins both occur in humans. The genes for myoglobin and hemoglobin are
A. pentalogs. B. paralogs. C. orthologs. D. topologs. E. analogs.