The MHC (major histocompatibility complex) is NOT important in
A. presenting antigenic determinants.
B. recognizing infected cells.
C. identifying bacterial pathogens.
D. identifying abnormal cells.
E. distinguishing self from non-self.
Answer: C
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Which one of the following is a variation of flowers frequently considered in investigations of flowers and their functions?
A. fragrance B. color C. shape D. number of parts E. All of these are true
Which plane divides the body into upper and lower portions?
a. sagittal b. frontal c. transverse d. midsagittal
Sensory input from eyes and ears travels in neurons to the brain. How is it that the different stimuli are
perceived as light and sound, respectively?
a. Light receptors send neural impulses more frequently than sound receptors. b. The sensory receptors themselves are different. c. The information from each type of receptor is sent to a different region of the brain. d. The physical location of the sensory receptors is different, ensuring a different "sense" is perceived in the brain. e. The neurons involved in the sensory pathways differ in shape and size.
Which plant is consumed by more people
worldwide than any other plant?
a. wheat b. corn c. rice d. potatoes e. legumes