Voluntary control of urination is accomplished by:
A) contraction of the ureters. B) an external sphincter made of skeletal muscle.
C) the skeletal muscle of the bladder. D) an internal sphincter of smooth muscle.
Answer: B
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What is the net movement of substances to regions of lower concentration called?
A. Osmosis B. Active transport C. Facilitation D. Diffusion
A patient who presents with red throat and tonsils can be diagnosed as having
A) streptococcal pharyngitis. B) scarlet fever. C) diphtheria. D) the common cold. E) The answer cannot be determined based on the information provided.
What type of neuron is responsible for carrying electrical signals AWAY from the CNS to elicit a response in the body?
A. sensory neuron B. motor neuron C. interneuron D. glial cell E. All of these choices are correct.
Evidence for the possible evolution of information storage from RNA to DNA is the fact that ____
a. they use the same nucleotides b. some modern viruses synthesize DNA from an RNA template c. bacteria use RNA as a genetic information storage molecule d. RNA is a simpler molecule than DNA e. RNA and DNA will form complementary pairs