Which of the following is NOT true of ciliates?
a. they have no cell wall
b. some are autotrophs
c. most live in seawater or fresh water
d. some live in mammalian guts
e. one species is a human pathogen
B
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Mass is the measurement of
(a) a line, extending from one point to another. (b) the space an object occupies. (c) the quantity of matter present in an object. (d) the degree of hot or cold of an object.
Resistance to blood flow depends mainly on
a. the diastolic pressure. b. elastic tissue of the vessels. c. blood vessel diameter. d. valves in the vessels. e. ultrafiltration pressure in the capillaries.
The central nervous system ________.
Fill in the blank(s) with the appropriate word(s).
Poliovirus is most often transmitted via
A) contaminated water. B) household pets. C) mosquitoes. D) droplets. E) endospores.