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Oct 7, 2018 · Competition is a relationship between organisms in which one is harmed when both are trying to use the same resource related to growth, reproduction, or survivability. Competition stems from the fact that resources are limited.
Apr 17, 2019 · The predator prey relationship consists of the interactions between two species and their consequent effects on each other. In the predator prey relationship, one species is feeding on the other species. The prey species is the animal being fed on, and the predator is the animal being fed.
Dec 18, 2016 · Biology Dictionary provides definition, examples and quiz for common biology terms, including molecular biology, cell biology, genetics, ecology and more!
- Predation: One Wins, One Loses. Predation includes any interaction between two species in which one species benefits by obtaining resources from and to the detriment of the other.
- Competition: The Double Negative. Competition exists when multiple organisms vie for the same, limiting resource. Because the use of a limited resource by one species decreases availability to the other, competition lowers the fitness of both.
- Mutualism: Everyone Wins. Mutualism describes an interaction that benefits both species. A well-known example exists in the mutualistic relationship between alga and fungus that form lichens.
- Commensalism: A Positive/Zero Interaction. An interaction where one species benefits and the other remains unaffected is known as commensalism. As an example, cattle egrets and brown-headed cowbirds forage in close association with cattle and horses, feeding on insects flushed by the movement of the livestock.
What is meant by interdependence? Describe an example of a way that you depend on other living things. Compare and contrast symbiosis and competition. Give three examples of resources organisms may compete for.
Introduction to gene regulation. Regulation is all about decision making. Gene regulation is, therefore, all about understanding how cells make decisions about which genes to turn on, turn off or to tune up or tune down.
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Sep 14, 2010 · With the exception of antitermination mechanisms that involve proteins complexed to the nascent transcript, bacterial repression pathways invariably involve the direct action of DNA-binding repressor proteins on the transcription machinery to block the activity of RNA polymerase at various steps, including interfering with recruitment initiation...
