Recall that angiosperms are, by far, the most diverse group of plants. Which plant group is the second most diverse, having approximately 23,000 living species?
A. the lycophytes
B. the ferns and horsetails
C. the bryophytes
D. the gymnosperms
C
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Large-scale screening of blood for the hepatitis B virus uses an assay designed to detect
A. the Delta agent. B. viral surface antigens. C. alanine transaminase. D. the Dane particle.
A population grows as long as its ____
a. total fertility rate exceeds the replacement fertility rate b. replacement fertility rate exceeds the total fertility rate c. total fertility rate equals the replacement rate d. total fertility rate is at least twice the replacement fertility rate e. total fertility rate falls below the average replacement fertility rate
How can Helicobacter pylori infection be detected?
A. Breakdown of urea B. Production of oxidase C. Hydrogen sulfide production D. Lactose fermentation E. Sensitivity to bacitracin
Sushi dishes, when not prepared properly are often the cause of food poisoning due to the presence of which of the following bacteria
A. Vibrio parahaemolyticus B. Aeromonas hydrophila C. Vibrio vulnificus D. Vibrio cholerae