Search results
Results from the WOW.Com Content Network
The black rat is a reservoir host for bubonic plague. The rat fleas that infest the rats are vectors for the disease. In biology and medicine, a host is a larger organism that harbours a smaller organism; [1] whether a parasitic, a mutualistic, or a commensalist guest . The guest is typically provided with nourishment and shelter.
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
The precursor for the Committee was created in 1969, when the General Assembly requested, via resolution 2618 (XXIV), that the Secretary-General convene an Informal Joint Committee on Host Country Relations in order to allow for a continuous exchange of views and exploration of problems between the UN community and the government of the host country.
First attested in Old English as Denamearc in Alfred's translation of Paulus Orosius's Seven Books of History against the Pagans. [188] The etymology of " Danes " is uncertain, but has been derived from the proposed Proto-Indo-European root *dhen ("low, flat"); -mark from the proposed Proto-Indo-European root *mereg- ("edge, boundary") via Old ...
The black walnut secretes a chemical from its roots that harms neighboring plants, an example of competitive antagonism.. In ecology, a biological interaction is the effect that a pair of organisms living together in a community have on each other.
The Plague of Athens (c. 1652 –1654) by Michiel Sweerts, illustrating the devastating epidemic that struck Athens in 430 BC, as described by the historian Thucydides. The United States Centers for Disease Control and Prevention defines epidemic broadly: "Epidemic refers to an increase, often sudden, in the number of cases of a disease above what is normally expected in that population in ...
A holobiont is a collection of closely associated species that have complex interactions, such as a plant species and the members of its microbiome. [2] [9] Each species present in a holobiont is a biont, and the genomes of all bionts taken together are the hologenome, or the "comprehensive gene system" of the holobiont. [10]
After being inserted in the host, the gene may be integrated into the host DNA, causing permanent expression, or not integrated, causing transient expression. Heterologous expression can be done in many types of host organisms. The host organism can be a bacterium, yeast, mammalian cell, or plant cell. This host is called the "expression system".