Biology, 05.05.2020 18:46 Kjkaiman9034
Many bacteria, including E. coli, are capable of growing under both anaerobic (no oxygen) and aerobic (oxygen) Mutations are introduced into an E. coli strain that inactivate several enzymes involved in DNA repair (there are no other mutations). This mutant strain grows normally when kept in an incubator with a 100% nitrogen gas atmosphere. However, the strain dies when exposed to a normal laboratory atmosphere (oxygen). Why
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Biology, 21.06.2019 17:00, gshreya2005
Which of the following statements is true? a. the main cause for speciation is an increase in gene flow. b. organisms that reproduce asexually are not considered part of a species. c. on a tree of life diagram, speciation is shown by the merging of two different lineages. d. the size of the geographic area inhabited by a population can cause speciation.
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Biology, 22.06.2019 13:30, jasminecoronetti44
Math focus 4. calculate a map has index contours at 250 m, 500 m, and 750 m. what is the contour interval?
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Biology, 22.06.2019 16:00, leeenaaa95
Fill in the blank with the correct sphere label. a: ⇒ geosphere b: ⇒ biosphere c: ⇒ hydrosphere
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Many bacteria, including E. coli, are capable of growing under both anaerobic (no oxygen) and aerobi...
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