Which line of defense is the body’s inborn, general defense mechanism?
a. adaptive immunity
b. the immune system
c. B and T cell activity
d. innate immunity
e. antibody production
ANSWER: d
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When individuals of a species do not form close pair bonds, and both males and females mate with multiple partners,
the species’ mating system is described as promiscuous.
a. True b. False
What qualities would you expect to observe in this lake?
1.lots of nutrients
2.more phytoplankton than algae
3.high biomass in the profundal zone
4.lots of oxygen at all levels
How is summation related to IPSPs and EPSPs? What is the difference between temporal summation
and spatial summation? What will be an ideal response?
Which of the following areas of the respiratory tract is lined with a single layer of epithelial cells?
a. nasal cavity b. larynx c. trachea d. bronchi e. alveoli