Shiga toxin is dangerous to humans because it is an _____
a. endotoxin that kills cells
b. endotoxin that illicit an immune response
c. exotoxin that interferes with protein synthesis by intestinal cells
d. exotoxin that disrupts nerve cell function
e. exotoxin that can overwhelm the immune response and decrease blood pressure
c
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What is the result of meiosis?
a. 2 diploid cells b. 4 diploid cells c. 2 haploid cells d. 4 haploid cells e. 1 haploid cell
Among these choices, the largest cell involved in frog reproduction is _____
A) an egg B) a blastomere in the vegetal pole C) a blastomere in the animal pole D) one of the products of the first cleavage
When a patient is treated with antibiotics, __________.
a. mutations occur in all of the bacterial cells b. sensitive bacterial cells multiply uncontrollably c. the drug will kill or inhibit the growth of all of the sensitive bacterial cells d. the drug will kill or inhibit the growth of all of the resistant bacterial cells e. mutations will occur in the sensitive bacterial cells, but not in the resistant bacterial cells
The preferred fixative for the Warthin-Starry technique is:
a) Carnoy b) Bouin solution c) absolute alcohol d) 10% buffered formalin