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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
In the exponential phase, the cells and cell mass

double at a constant rate
decreases
are constant
first increases then decreases

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Growth and Nutrition of Bacteria
Organisms, using organic compounds as electron donors are called

organotrophs
chemotrophs
lithotrophs
phototrophs

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Growth and Nutrition of Bacteria
The straightforward method of binary fission explains how bacteria

reproduce
evolve
grow in nutrient agar
move

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Growth and Nutrition of Bacteria
Exponential phase of growth curve of bacteria is of limited duration because of

rise in cell density
accumulation of toxic metabolites
all of these
exhaustion of nutrients

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Growth and Nutrition of Bacteria
The term obligate anaerobe refers to an organism that

prefers to grow without oxygen
uses oxygen when present or grows without oxygen when oxygen is absent
doesn't use oxygen but tolerates it
is killed by oxygen

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Growth and Nutrition of Bacteria
The period between inoculation of bacteria in a culture medium and beginning of multiplication is known as

lag phase
decline phase
log phase
stationary phase

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