Changes called male climacteric are a consequence of a(n) ________.
A. decreased secretion of testosterone
B. increased secretion of progesterone
C. increased secretion of estrogens
D. increased secretion of FSH and LH
E. increased secretion of GnRH
Answer: A
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Of the organelles below which occurs in the lowest numbers within a typical human cell?
a. mitochondria. b. ribosomes c. peroxisomes. d. lysosomes. e. nuclei.
____________________ is a sex-linked blood disorder passed on the X chromosome.?
Fill in the blank(s) with correct word
Which of these functions are accomplished by the nasal cavities?
A. Mucus produced by the nasal lining traps debris from the air. B. Cilia on the mucous membrane sweep debris into the pharynx. C. he sense of smell D. Air is humidified and warmed. E. All of these are functions of the nasal cavities.
A white blood cell engulfing a bacterium is an example of
A. active transport. B. pinocytosis. C. exocytosis. D. phagocytosis.