Which vitamin deficiency can result in rickets in children and osteomalacia in adults?
a) A
b) B
c) C
d) D
e) E
d
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A virus is injected into a rabbit and the rabbit is allowed to make antibodies against the viral antigen. These antibodies are then removed from the rabbit plasma and injected into a human to combat an infection by the same virus. This would be an example of
A) innate immunity. B) artificially induced passive immunity. C) artificially induced active immunity. D) naturally acquired passive immunity. E) naturally acquired active immunity.
The highest frequency sound is detected by
A) hair cells located near the middle of the basilar membrane. B) hair cells located near the oval window end of the basilar membrane. C) hair cells located near the helicotrema end of the basilar membrane. D) the frequency at which the stereocilia vibrate. E) unique hair cells located anywhere along the basilar membrane.
Which of the following muscles extends the knee?
A. Rectus femoris B. Gracilis C. Adductor magnus D. Sartorius
The testes
A. secrete hormones. B. produce gametes. C. produce gametes and secrete hormones.