Loading…
Loading…
GCSE Combined Science · key term
An organism in or on which a pathogen lives, obtaining the conditions and resources it needs.
Used by AQA and Edexcel
Specification 4.3.1.1, 4.3.1.5 · Paper 1
Revise: Infectious diseasesAn organism that supports a pathogen is its host, providing conditions and resources for the pathogen to grow and reproduce. This does not mean that every pathogen can infect every kind of plant or animal.
An organism in or on which a pathogen lives, obtaining the conditions and nutrients it needs.
Paper 1, Paper 2
An organism in or on which a parasite lives and from which the parasite obtains resources.
Revise: Ecosystem Organisation and InterdependenceIn parasitism, a parasite lives in or on another organism, called its host, and obtains resources from it. These resources may include food, shelter or a suitable place to reproduce. The parasite benefits, but the host is harmed rather than benefiting.
Distinguish the causes of harm: bacteria may release toxins, whereas viruses reproduce inside host cells and damage them.
A vector carries a pathogen between hosts. In malaria, the mosquito is the vector and the protist is the pathogen.
For mutualism, state the benefit to each species. For parasitism, identify the parasite and host and explain how the parasite benefits while the host is harmed.
Create a free account to read GCSE Combined Science revision notes for your exam board and track your progress.