The protection against a specific infectious disease that arises when all or nearly all of a population is vaccinated is termed
A) immune preparedness.
B) mandatory vaccination.
C) government-controlled health care.
D) herd immunity.
D) herd immunity.
Biology & Microbiology
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All of the following nucleotide bases are pyrimidines EXCEPT
A. adenine. B. thymine. C. cytosine. D. uracil. E. cytosine and thymine.
Biology & Microbiology
Endosperm tissue of angiosperms has what ploidy level?
A. n B. 2n C. 3n D. 4n E. 8n
Biology & Microbiology
Diffusion ________ the entropy of a solution.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
The liver performs all of the following functions EXCEPT for ____
a. secreting digestive enzymes into the small intestines b. producing bile c. synthesizing plasma proteins d. storing excess glucose e. storing vitamins and minerals
Biology & Microbiology