Among the last line of defenses against prolonged exposure to an extracellular pathogen is _____
A) lysozyme production
B) phagocytosis by neutrophils
C) antibody production by plasma cells
D) histamine release by basophils
E) lysis by natural killer cells
Answer: C
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Which of the following procedures best determines the relative order, but not precise location, of a series of genes on a chromosome?
A. Physical mapping B. Cytogenetic mapping C. Linkage mapping
The distribution of highly competitive animals is
likely to be a. clumped. b. random. c. uniform. d. constant. e. homogeneous.
Aquatic arthropods that fragment organic particles and also eat bacteria and fungi on the surface of the litter are called
A) shredders. B) filtering collectors. C) gathering collectors. D) grazers.
How do viruses gain entry into cells?
What will be an ideal response?