Complement is a complex defense system that results, by way of a cascade mechanism, in the formation of a membrane attack complex that kills cells by creating holes in their membranes.
a. true
b. false
Ans: a. true
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Which of these are thought to have anti-cancer benefits?
A) Heterocyclic aromatic amines (HAs) B) Cruciferous vegetables such as broccoli C) Red meats D) Baked potatoes
Answer the following questions true (T) or false (F)
1. The job of an ecologist is to preserve the natural world. 2. All the members of a single species of frog in a particular pond would be an example of a population. 3. A community of organisms and the physical environment with which they interact is an ecosystem.
A therapeutic index is a ratio between
A) toxicity versus half-life. B) potential patients not ruled out due to drug interactions or contraindications versus patients that experienced side effects. C) maximum safe dose versus minimum effective dose. D) patient survivability versus patient allergies. E) patients that benefited from drug versus patients that experienced side effects.
Epidemic curves were prepared by plotting number of cases of disease on the Y-axis and dates on the X-axis. Graph would show a steady increase in number of cases over time, followed by a slow tapering.
A. Propagated Epidemic B. Point-source Epidemic C. Common-source Epidemic