Which of the following DOES NOT correctly complete this statement: The MHC (major histocompatibility complex) is important in
A. distinguishing self from non-self.
B. recognizing infected cells.
C. identifying bacterial pathogens.
D. identifying abnormal cells.
E. presenting antigenic determinants.
C. identifying bacterial pathogens.
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When extra juvenile hormone is experimentally administered to worker bees (Apismellifera), they ____
a. revert to performing duties of younger bees b. live longer and produce more offspring c. begin to mate and lay eggs d. produce more chemicals that reinforce memory e. develop impaired memories
Which of the following solutes would NOT leave the
vertebrate body under normal conditions? a. uric acid b. ammonia c. urea d. carbon dioxide e. glucose
Initial treatment for tetanus in an unimmunized person with a puncture wound is
A) tetanus toxoid. B) tetanus immune globulin. C) penicillin. D) none; no action is necessary. E) debridement.
Is the average ecological footprint getting larger or smaller globally? What will be an ideal response?