Active immunity requires
A. the transfer of antibodies from another individual.
B. direct encounter with the antigen.
C. that an active virus be used in a vaccine.
D. that all immune responses to the pathogen result in symptoms of illness.
B
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The palatine tonsils lie in the lateral walls of the
A) oropharynx. B) nasal vestibule. C) larynx. D) esophagus. E) laryngopharynx.
Each sensory neuron responds to stimulus information within its ____________________, which is a circumscribed region of the skin surface surrounding it
Fill in the blank(s) with correct word
Phospholipid tails are hydrophilic and are attracted to water
Indicate whether the statement is true or false
Sensory neurons that are part of the stretch reflex synapse directly onto the motor neurons of antagonist muscles, and inhibit them
Indicate whether the statement is true or false.