BioScience Dictionary

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Ot.

Found Host 6 times.

Displaying results 1 to 10.

1. Host
An organism on which a parasite lives and by which it is nourished (also applied, loosely, to a plant supporting an epiphyte ).

2. Host
An organism that is infected with/is fed upon by a parasitic or pathogen ic organism (e.g., a virus , nematode, fungus , etc.)

3. Host cell
* A cell which has been infected by a virus is known as the "host cell" of that virus. * A cell which is used in lab techniques such as DNA cloning to receive, maintain, and allow the reproduction of cloning vector s. The DNA introduced with the vector is replicated whenever the cell divides.

4. Host range
The range of host species or cell types which a particular virus , bacteria , or parasite is able to infect or parasitize.

5. Host restriction-modification
A bacterial system where the bacterium is able to destroy invading DNA from a bacteriophage ( virus which infects bacteria) while at the same time preventing the destruction of their own DNA. The phage DNA is cleaved by a restriction enzyme made by the bacterium; the bacterial DNA is modified (usually with methylation ) so that the enzyme won't destroy it.

6. Host-vector system
A combination of a bacterial host cell (i.e. a specific strain) and a virus vector (i.e. a particular bacteriophage strain) which work well together for DNA cloning.

View web definitions »

Learn more about Host »