In the experiment, what would be considered the control group?
a. the bacteria-free bean bugs
b. the bacteria-infested bean bugs
c. the use of pesticides on the soybean plants
d. the number of deaths caused by eating the plants
A
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A new microbe has been discovered in the rumen of sheep. Microscopy shows no evidence of a nuclear membrane and biochemical studies of the cell wall demonstrate the lack of peptidoglycan. Metabolic studies show that this microbe generates methane. This microbe would most likely be classified in the:
A. Domain Archaea B. Domain Eukarya, Protists C. Domain Bacteria D. Domain Eukarya, Kingdom Fungi
How many mass extinctions have occurred over all of geologic history?
a. one b. two c. three d. four e. five
The vital capacity is indicated by
a. A + D. b. A + D + E. c. C + E. d. A + B + C + D. e. A + C + D.
Transduction is the result of what mistake that viruses make during replication?
A. transcribing bacterial genes upon excision B. incorporating bacterial genes during phage assembly C. cutting up the bacterial chromosome D. cutting up the viral genome E. inserting a viral DNA fragment into the bacterial chromosome