Barr bodies
A. are formed in females.
B. are formed only in males.
C. cause an increased production of X-linked gene products.
D. inactivate Xic on autosomes.
E. are formed only in males and inactivate Xic on autosomes.
A. are formed in females.
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1.infection. 2.disease. 3.fatigue. 4.injury. 5.loss of fibers.
Histamine causes all of the following except
A. pruritis and headache. B. constriction of smooth muscle of bronchi and the intestine. C. wheal and flare reaction in skin. D. relaxation of vascular smooth muscle. E. increased sensitivity to pain.
An organism that grows slowly in the cold but has an optimum growth temperature of 32°C is called
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Which of the following chemical substances contributes to the unique characteristics of acid-fast bacteria?
A) N-acetylglucosamine B) peptidoglycan C) lipoteichoic acid D) endotoxin E) mycolic acid