Climate change occurs because greenhouse gases absorb _______ radiation
a. UVA
b. UVB
c. visible
d. infrared
e. cosmic
D
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All gram-negative bacteria have lipopolysaccharides in their outer membranes
Indicate whether the statement is true or false.
The two major divisions of the vertebral nervous system are the:
a. autonomic and peripheral systems b. sympathetic and parasympathetic systems c. cranial and spinal nerves d. central and peripheral nervous systems e. brain and spinal cord
The interaction of sympathetic and parasympathetic systems is best described as _____
a. antagonistic b. cooperative c. overriding d. synergistic e. ineffective
What type of vaccine is the hepatitis B vaccine?
A. inactivated whole pathogen B. attenuated vaccine C. toxoid vaccine D. a recombinant vaccine composed of a single antigen of the hepatitis virus E. a vaccine produced by treating the virus with formaldehyde