Which of the following is mismatched?
A. Salk vaccine; requires boosters
B. Sabin vaccine; live attenuated vaccine
C. Salk vaccine; administered orally
D. Sabin vaccine; less stable
E. Salk vaccine; inactivated polio vaccine
Answer: C
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Oxygen-16 is abundant and has 8 protons and 8 neutrons. Oxygen-18 has two extra neutrons. These two forms are:
A. oxygen ions. B. oxygen dimers. C. oxygen isomers. D. oxygen isotopes.
Our sense of balance depends most directly on
A. the vestibular system. B. the auditory system. C. the visual system. D. mechanoreceptors in our hands and feet. E. stretch receptors in our skeletal muscles.
________ filters are widely used to provide a flow of sterile air to hospital rooms.
Fill in the blank(s) with the appropriate word(s).
Which of the following is part of the middle ear?
A. semicircular canals B. pinna C. auditory canal D. malleus E. cochlea