Test 3 Vandy Flashcards
Form of symbiosis where both organisms benefit
Mutualism
Converts N2 gas to Ammonia and is a type of Mutualism
Nitrogen fixation
Types of Lichen
Crustose-crust like
Foliose-leaf like
Fructicose-shrub like
Nitrogenase
Enzyme used in Nitrogen Fixation
Irreversibly destroyed in the presence of O2
Soil fungus that has mutualistic relationship with vascular plants
Penetrates cortical cells
Endomycorrhizae
Ex of Mutualism
Nfix, lichen, mycorrhizae, RUMINANTS, insects, protozoa, flashlight fish
Type of symbiosis one organism benefits while the other is harmed
Parasitism
Bdellovibrio
G-, curved rod that preys on other bacteria
Caused the Great Irish famine
Potato Blight
Type of symbiosis where on organism benefits while the other is unaffected
Commensalism
Quorum sensing in Vibrio fischeri
involves gene expression of light depending on the density of the population of bacteria
Inflammation symptoms
edema, erythema, pain and heat
Sequence of Infection
Incubation-before symptoms Illness prodromal-symptoms appear acute-symptoms peak decline-disease resolves convalescent-recovery
Toxoid**
Chemically inactivated exotoxins that have lost their toxicity
Example of Latent Infection
Herpes Simplex Virus
Collagenase
degrades collagen/muscle tissue
C. perfringes (gas gangrene)
Erythrogenic Toxin
Streptococcus pyogenes
Sebaceous gland makes what antimicrobial agent
Sebum
Lysozyme
found in tears, saliva, and nasal secretions
breaks cell wall peptidoglycan
Quelleung Reaction
check for capsular swelling which indicates
Streptococcus pneumoniae
Basophils
release histamine
type of Granulocyte
Streptolysin O
Produced by S. pyogenes
inactivated by O2
causes WBC to release cytoplasmic granules
Staph aureus enterotoxins
heat stable and imply food intoxication
Diptheria toxin
inhibits EGF2 in protein synthesis Corynebacterium diptheriae (Babes ernst bodies)
Neurotoxin of C.Botulinum
blocks release of acetylcholine
Limulus amoebocyte lysate assay
detects endotoxins (cause septic shock)
Chains, G+, Beta hemolysis
Scarlet Fever
St Anthonys Fire aka Erysipelas
Streptococcus pyogenes
Whooping Cough
Bordetella pertusis
Hemolytic urine syndrome
E. coli 0157:H7
Peptic Ulcers
Heliobacter pylori
Rice water stools, loss of 10-15L/day
Vibrio Cholerae (Cholera)
Bacillary dysentry
Shigella sonnei–>Shigellosis
Dental caries-enamel destruction- also causes plaque, capsule biofilms
Streptococcus mutans
Difference between Botulinum toxin vs Tetanus toxin
Fluid vs Spastic paralysis
Causes meningitis in children aged 2-60 months
Haemophilus influenzae strain b
Phase of Leprosy associated w/ loss of sensation
Tuberculoid phase
Nongonnococcal Urethritis NGU
Chlamydia trachomatis
Ureaplasma urealyticum