Growth and Nutrition of Bacteria
All organisms require at least small amounts of carbondioxide, However, some can use CO2 as their sole source of carbon. Such organisms are termed as

phototrophs
autotrophs
photo-organotrophs
chemotrophs

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Growth and Nutrition of Bacteria
Which of the following organisms typically get their carbon for biosynthesis from organic compounds?

None of these
Ammonia-oxidizing bacteria (chemolithotrophic bacteria)
Aerobic, glucose-respiring bacteria (aerobic respiration)
Photosynthetic cyanobacteria (phototrophic metabolism)

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Growth and Nutrition of Bacteria
Generation time is

time required for the population to double
both (a) and (c)
obtained by expression t/n, where t = time interval, n = number of generation
time required for the initial adjustment

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