Microbiology overview Flashcards
Define normal flora
The entire bacterial life of a region of the body
Name a species of bacteria on the skin
Staphylococcus
Name a species of bacteria in the nose or mouth
Streptococcus
Name a species of bacteria in the GI tract
E-coli ( Escherichia coli)
What is the colon ( part of the body)
Large intestine
Why is normal flora important ? (3)
Protection from pathogen colonisation(space and metabolites)
Development of immune function
Nutritional capacity
What is Sinusits
symptoms
this is where the sinuses behind the cheekbone and forehead become swollen usually due to infection.
Symptoms of pain, headache and runny nose
70s (bacteria)
Type of ribosome
bacterial cell wall
peptidoglycan
Where is normal flora densely populated?
mouth
large intestine
female reproductive tract
Where is normal flora moderately populated?
skin-dry
stomach -acid
bladder
Where is normal flora vastly populated?
blood, tissues, joint fluids and CSF
what are cocci
spheres
bacilli
rods
What the third shape of bacteria
spirals
Streptococcus spp. stains purple and spherical
Gram postive cocci
Neisseria spp. stains pink and round
Gram negative cocci
clostridium spp. stains purple and has a long shape
Gram positive rods
Bacteroises , Escherida stains pink and is a bacci
Gram negative rods
Gram positive have a thick or thin peptidoglycan layer
Thick
Describe the quick process of gram staining
Fixation Crystal violet sticks both iodine treatment decolourization by adding alcohol colour stain such as sarfarin
What are the two morphological forms of fungal structures?
Yeast which is Smoot e.g. candida
Mould - mycelial growth e.g. Aspergillus
How big are viruses
0.2micrometres
How are protozoa classified
By the way they move- phagocytosis, flagella, excreted and picked up by host
