Which of the following is characteristic of complete antigens?
A) inhibit production of antibodies
B) contain many repeating chemical units
C) small molecules
D) reactivity with an antibody
D
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In the male, which muscle ejects urine or semen, compresses the base of the penis, and helps in formation of an erection?
A. Iliococcygeus B. Superficial transverse perineal muscle C. External urethral sphincter D. Bulbospongiosus E. Pubococcygeus
The hormone that regulates water excretion by the kidneys
A) only increases water permeability in certain portions of the kidney tubules. B) decreases water permeability throughout the kidney tubules. C) increases water permeability throughout the kidney tubules. D) only decreases water permeability in certain portions of the kidney tubules.
In common laboratory terms, naturally occurring coat color pattern is known as:
A) transgenic B) acclimatization C) agouti D) dusting
In general, skin cancer is least likely to develop in which of the following locations?
a. scalp b. forehead c. nose d. the back of the hand