Memory cells "remember" the antigen and make a faster and greater response the next time the antigen is encountered.
a. true
b. false
Answer: a. true
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Global change predictions are often made using general circulation ________
Fill in the blank(s) with correct word
Which population of organisms would be in the greatest danger of becoming extinct?
a) a population of organisms having few variations living in an unstable environment b) a population of organisms having many variations living in an unstable environment c) a population of organisms having few variations living in a stable environment d) a population of organisms having many variations living in a stable environment
Bergey's Manual of Systematic Bacteriology contains
A. classification schemes for prokaryotes. B. treatments for bacterial diseases. C. a complete list of all bacterial species. D. genetic sequences of all known prokaryotes. E. rules for naming new bacterial species.
In the human digestive system, the stomach produces about 2 liters of HCl and other gastric secretions every day. Acid secretion by the stomach
A. is stimulated by gastrin. B. begins the process of starch digestion. C. inhibits peristalsis. D. promotes a high pH. E. inhibits pepsin activity.