Vaccines typically can use any of the following EXCEPT
A) killed microbes or microbe parts.
B) live, attenuated microbes.
C) live, virulent microbes.
D) genetically engineered microbes.
Ans: C) live, virulent microbes.
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Certain toxins cause muscle paralysis. If the diaphragm is paralyzed, the most immediate
consequence is that _______________.
a. all gas exchange will stop b. ventilation will not occur c. all diffusion will stop d. gas exchange will occur across the body
The tough connective tissue sac surrounding the heart is the
A. myocardium. B. epicardium. C. peritoneal cavity. D. pericardium. E. endocardium.
In what molecular form do plants store their excess carbohydrates?
What will be an ideal response?
If you are working in a biotech lab and you have only a small amount of DNA available for analysis. Which could you use to duplicate that small piece of DNA repeatedly?
a) restriction enzymes b) plasmids c) cloning d) polymerase chain reaction e) gene libraries