Human vocal cords are located in the
a. glottis.
b. pharynx.
c. trachea.
d. larynx.
e. bronchus.
Answer: d
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The only vertebrates in which blood flows directly from respiratory organs to body tissues without first returning to the heart are the _____
A) amphibians B) birds C) fishes D) mammals E) reptiles
What is the structural unit of interacting tissues called?
a. Organ b. Cell c. Atom d. Tissue e. Community
What is the apical meristem?
a. mitotically active tip of the root or shoot b. midvein of a leaf through which wastes and nutrients circulate c. mitotically inactive base of the root d. fibrous bract that protects the outside of a bud before flowering
Infection with some Salmonella enterica serotypes can progress to typhoid fever when the bacteria
A) attach to cells of the small intestine. B) induce endocytosis by intestinal cells. C) reproduce within cells of the small intestine. D) produce type III secretion system proteins. E) enter the blood and are engulfed by phagocytes.