Bacteria Flashcards
Are bacteria multicellular or single cells?
Single
Are bacteria prokaryotes or eukaryotes
Prokaryote
What are the 2 main categorie sof bacteria
gram positive and gram negative
Describe the cell wall of gram positive bacteria
Has a thick layer of peptidoglycans to which the stain adheres
What colour do gram positive bacteria stain
pink
Describe the cell wall of gram negative bacteria
Thin layer of peptidoglycan surface to which the stain does not adhere. (0.5 mark)
What colour do gram negative bacteria stain
blue/purple
Define bacteria colonisation
Symbiotic and natural living benefits between 2 species which may be beneficial to one or both of them, and does not cause any harm
Define bacterial infection
colonisation that results in the multiplication of pathogens or organisms that may cause harm to the host/the manifestation of disease
Name some sites in the body that are sterile from bacteria
CNS Blood, tissues and organs eye sinuses inner and middle ear
Name some sites of the body where bacteria colonises
throat mouth vagina skin nose
Name a common infection of the respiratory system and the bacteria that cause it
pneumonia and streptococcus pneumoniae
Name a common infection of the gastrointestinal system and the bacteria that causes it
Cholecytisis and gut flora
Define sepsis
A physiological response to a severe infection involving cytokine cascades, free radical production and vasoactive mediators
Name some principles of treatment of infection
Investigate conservative antibiotics surgical infection control public health
