Some diseases can be vertically transmitted. This is understood to mean the disease is transmitted
A) By contact between siblings
B) From parent to offspring via respiratory route
C) Between higher and lower animals
D) Between people living or working in the same building
E) From parent to offspring via milk, ovum, sperm, or placenta.
E) From parent to offspring via milk, ovum, sperm, or placenta.
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When mosquitoes search for their next blood meal, their sensory receptors respond to CO2 levels. Which of the following types of receptor is functioning?
A. a mechanoreceptor B. a thermoreceptor C. a nociceptor D. a chemoreceptor
Inbreeding is due primarily to
a. migration. b. non-random mating. c. mutation. d. natural selection. e. adaptive radiation.
Lactose is a(n)
A) ribose. B) monosaccharide. C) oligosaccharide. D) polysaccharide. E) starch.
The primary way that genes control the activities of a cell is by means of
A. hormones. B. electrical impulses. C. ATP. D. enzymes.