The first and second lines of defense against microbial invasion are part of
A) innate immunity.
B) adaptive immunity.
C) species resistance.
D) microbial antagonism.
E) both species resistance and adaptive immunity.
A
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Which of the following tissue type covers or forms the lining of all internal and external body surfaces?
A. muscle B. connective C. epithelial D. nervous E. hepatic
Which of the following does (do) not occur in anaerobes?
A) anabolic reactions B) catabolic reactions C) electron transport chain D) fermentation reactions
Of the following list, which antibiotics affect protein synthesis?
A. Penicillin B. Ciprofloxacin C. Chloramphenicol D. Tetracycline E. Both tetracycline and chloramphenicol are correct.
Based on estimates that consider the NPP of Earth and human use of these resources, what is the carrying capacity of people calculated by scientists?
A) 6.6 billion B) 10.6 billion C) 21 billion D) 40 billion