E. coli has at least four individual topoisomerases (I through IV). Those of type I (topoisomerases I and III) generally, relax DNA by removing negative supercoils (increasing Lk).

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#Id: 8659

#Unit 10. Ecological Principles

TLS Online TPP Program

#Id: 8660

#Unit 10. Ecological Principles

Liebig’s law of the minimum Law stating that a population increases until the supply of the most limiting resource prevents it from increasing further. 

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#Id: 8661

#Unit 10. Ecological Principles

Leibig’s law of the minimum assumes that each resource has an independent effect on the growth of a population.In other words, it assumes that if a given resource limits the growth of individuals and populations, increasing the availability of other resources will not improve such growth.

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#Unit 10. Ecological Principles

Coexist of species 

They Do Not Occupy Identical Niches

Species may partition resources

Morphological differences

Realized niche is less than fundamental niche 

Greater strength intraspecific competition than interspecific competition 

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#Unit 10. Ecological Principles

Competitive exclusion principle The principle that two species cannot coexist indefinitely when they are both limited by the same resource.

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#Unit 10. Ecological Principles

The Enemy release hypothesis is the idea that invasive species are less impacted by enemies than native species.