All coliforms are
A. enteric pathogens.
B. rapid lactose fermenters.
C. oxidase positive.
D. fastidious.
E. strains of E. coli.
Answer: B. rapid lactose fermenters.
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Gap genes, segment-polarity genes, and homeotic genes all _____
A) act independently of one another B) code for transcription regulatory factors C) can be activated at any time during development D) are unique to Drosophila embryos
Which is the most dominant species?
A) largest in number B) highest in relative abundance C) most relative biomass D) All of the above can indicate dominance.
Animals can navigate by using
A. sound. B. landmarks. C. sun. D. All of these answers are true.
The total amount of energy fixed by photosynthetic organisms minus the energy used in their own metabolic activities is
A. net secondary productivity. B. primary productivity. C. secondary productivity. D. net primary productivity.