The bending movements of cilia and flagella
a. are accomplished by alternate solation and gelation of the cytosol.
b. involve the alternate assembly and disassembly of actin filaments.
c. are produced by the sliding of adjacent microtubule doublets past each other.
d. are important in providing motility for many organisms but are not of any use in humans.
e. none of these answers.
C
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Which of the following is true about veins?
A) Venous valves are formed from the tunica media. B) Up to 35% of total body blood is in venous circulation at any given time. C) Veins have a small lumen in relation to the thickness of the vessel wall. D) Veins are called capacitance vessels or blood reservoirs.
Which of the following bones is involved in making up the nasal septum?
A) temporal B) maxillary C) frontal D) ethmoid E) sphenoid
Dehydration with accompanying hypertonicity can be brought about by __________, a disease characterized by a deficiency of vasopressin
Fill in the blank(s) with correct word
Passive electroreception uses an electric organ located in the tail of certain fish
Indicate whether the statement is true or false