Which one of the following statements is TRUE regarding glial cells?
A) They are located in the matrix of cartilage.
B) They transmit nerve impulses from the brain to the internal organs.
C) They stimulate the contraction of cardiac muscle.
D) They support and protect neurons.
E) They produce blood plasma.
D
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Nearsightedness is caused by
a. eye structure that focuses an image in front of the retina. b. uneven curvature of the cornea. c. uneven curvature of the lens. d. eye structure that focuses an image posterior to the retina. e. all of these.
Define symbiosis. What types of interactions could be considered symbioses?
What will be an ideal response?
Which term refers to an electromagnetic radiation that is of the shortest wavelength and highest energy?
a. radio waves b. gamma rays c. UV light d. X-rays
The structural polysaccharide of fungal cell walls is the same polysaccharide found in insect
a. exoskeletons. b. endoskeletons. c. eyes. d. cartilage.