Infection Control - micro-organisms Flashcards
Heterotrophs
micro-organisms that utilise organic carbon from other organisms
Autotrophs
Micro-organisms that manufacture their own food from inorganic molecules
Saprophytes
Lives off dead and decaying matter
parasites
live in or on a living host, at the expense of the host
parasitism
live on or in a host at the expense of the host
commensalism
live on or in a host, usually doing no harm to the host
mutualism
live in or on the host where both micro-organism and host benefit
What can micro-organisms be biologically classified into:
Virus Bacteria Fungi prions protozoa endoparasites ectoparasites
What are the rod shaped bacteria called
bacilli
What are the curved rod shaped bacteria called
vibrios
Spherical bacteria cells are called
cocci
Cocci can come in different forms
pairs are called diplococcic
chains are called streptococci
grape like clusters are called staphylococci
What colour is gram-positive
purple or blue
what colour is gram - negative
pink or red
Bacteria needs the right environment to grow and reproduce.
What are these:
Sufficient supply of correct nutrients correct temperature correct pH water correct gaseous environment
