Although cells tend to be spherical, several factors influence cells to assume other shapes. Which of these does not influence cell shape?
A) cell walls
B) number of mitochondria
C) structural filaments within the cells
D) pressure from neighboring cells
E) the cytoskeleton
B) number of mitochondria
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The two body systems that play the largest role in animal behavior are:a
reproductive and digestive. b. reproductive and endocrine. c. nervous and reproductive. d. nervous and endocrine. e. reproductive and muscular
What occurs after a pollen tube penetrates an ovule?
a. Other pollen tubes are attracted to that ovule. b. That pollen tube continues on to another ovule. c. Other pollen tubes are prevented from gaining access to that ovule. d. Other pollen tubes can penetrate that ovule more easily.
Primary infection with Epstein-Barr virus is known as
A) infectious mononucleosis. B) Burkitt's lymphoma. C) Hodgkin's lymphoma. D) chronic fatigue syndrome. E) oral hairy leukoplakia.
What information would best help you distinguish what type of sensation a sensory neuron transmits?
A. The rate of action potential firing B. The proteins it expresses most abundantly C. The amplitude of action potentials D. The part of the brain it transmits signals to E. The diameter of the axon