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Exam 2
MMBB 154
166
Microbiology
Undergraduate 4
03/03/2012

Additional Microbiology Flashcards

 


 

Cards

Term

What are the symptoms of Botulism?

Definition
  • Blurred vision
  • slurred speech
  • difficulty swallowing
  • labored breathing
  • flaccid paralysis
Term
What are the sypmptoms of Staphylococcal food poisoning?
Definition
  • vomiting
  • abdominal cramps
  • nausea
  • diarrhea
  • *Symptoms only last an hour* Complete recovery in 24 hours
Term
What are the symptoms of Clostridial food-poisoning?
Definition
  • Diarrhea
  • No vomiting
Term
What are the symptoms of Typhoid fever?
Definition
  • deep ulcers in small intestines
  • bloody stools
  • little diarrhea
Term
What are the sypmptoms of Typhoid fever after a few days?
Definition
  • fever
  • lethargy
  • delirium
  • abdomen covered with rose colored spots
  • can have bowel perforation, or infection of gall bladder
Term
How many people who recover from typhoid fever become carriers?
Definition
5%
Term
What are the symptoms of Samonellosis?
Definition
  • fever
  • nausea
  • vomiting (+/-)
  • diarrhea
  • abdominal cramps
Term
What are the symptoms of cholera?
Definition
  • massive diarrhea
  • may lose 1 lt of fluid
  • rice water stools
  • dehydration: eyes sink into orbits
  • skin is wrinkled and dry
  • muscular cramps in legs and arms
  • blood thickens
  • urine production stops
  • low blood pressure /// shock /// coma
Term
If left untreated, how many victims of cholera die?
Definition
70%
Term
How do you get cholera?
Definition
  • ingesting bacteria in contaminated food or water
  • contaminated shellfish
Term
What is the genus name for Botulism?
Definition
Clostridium botulinum
Term
What is the genus name for Staphylococcal food poisoning?
Definition
Staphylococcus aureus
Term
What is the genus name for Clostridial food-poisoning?
Definition
Clostridium perfringenes
Term
What is the genus name for Typhoid fever?
Definition
Salmonella typhi
Term
What is the genus name for Cholera?
Definition
Vibrio cholerae
Term
What is the genus name for Peptic Ulcer?
Definition
Helibacter pylori
Term
What is the genus name for Hemorrhagic colitis and its sequelae?
Definition
Escherichia coli O157:H7
Term
What is the genus name for Strep Throat?
Definition
Streptococcus pyogenes
Term
What is the genus name for Diphtheria?
Definition
Corynebacterium diphtheriae
Term
What is the genus name for Pertussis (Whooping Cough)?
Definition
Bordetella pertussis
Term
What is the genus name for Meningitis?
Definition

Neisseria meningitis

Haemophilus influenzae

Term
What is the genus name for Tuberculosis?
Definition
Mycobacterium tuberculosis
Term
What is the genus name for Legionairres Disease?
Definition
Legionella pneumophila
Term
What is the genus name for Lebsiella pneumonia?
Definition
Kelbsiella pneumoniae
Term
What is the genus name for Anthrax?
Definition
Bacillus anthracis
Term
What is the genus name for Tetanus?
Definition
Clostridium tetani
Term
What is the genus name for Gas Gangrene?
Definition
Clostridium perfringenes
Term
What is the genus name for Lyme Disease?
Definition
Borrelia burgdorferi
Term
What is the genus name for Rocky Mountain Spotted Fever?
Definition
Rickettsia rickettsii
Term
What is the genus name for Syphilis?
Definition
Treponema pallidum
Term
What is the genus name for Gonorrhea?
Definition
Neisseria gonorrhoeae
Term
What is the genus name for Chlamydia?
Definition
Chlamydia trachomatis
Term
What is the genus name for Leprosy?
Definition
Mycobacterium leprae
Term
What is the genus name for Staphylococcal Skin Disease and Toxic Shock Syndrome?
Definition
Staphylococcus aureus
Term
What is the most dangerous form of food poisoning?
Definition
Clostridium botulinum
Term
Is C. botulinum Gram - or Gram +?
Definition
Gram + rod (spore former)
Term
How does the C. botulinum toxin create the symptoms?
Definition
  • Botulinum toxin prevents the release of Acetylchlorine from nerve endings
  • No acetylcholine, no muscle contraction, this is flaccid paralysis
Term
How do you treat Botulism?
Definition
  • Large dose of antitoxin
  • Place person on respirator to aid breathing
  • DO NOT give antibiotics
Term
How do you treat Clostridial Food Poisoning?
Definition
  • Usually none, quick relief without medication
Term
How do you treat Salmonella typhi?
Definition
Chloramphenicol
Term
How do you treat Salmonellosis?
Definition
  • none
  • (maybe re-hydration)
  • no antibiotics... they seem to increase tissue damage
Term
How do you treat Cholera?
Definition
Replace Fluid Loss (drink water with salts and glucose)
Term
How do you treat Peptic Ulcers?
Definition
Tetracycline
Term
How do you treat E. coli?
Definition
  • re-hydration
  • kidney dialysis
  • no antibiotics.. antibiotics make HUS worse
Term
How do you treat Streptococcus pyogenes?
Definition
  • No vaccine
  • Penicillin
  • Erythromycin (if allergic to pen)
Term
How do you treat Diphtheria?
Definition
  • anti-toxin
  • anti-biotic (penicillin)
Term
How do you treat Pertussis?
Definition
  • Anti-toxin
  • Anti-biotics
  • Anti-convulsives
Term
How do you treat Neisseria Meningitis?
Definition
Antibiotics: rifampin, penicillin, sufonamides
Term
How do you treat Haemophilus Meningitis?
Definition
Multiple antibiotics
Term
How do you treat Tuberculosis?
Definition
Antibiotics
Term
How do you treat Strep. pneumonia?
Definition
  • antibiotics: penicillin, tetracycline, chloramphenicol, erythromycin
Term
How do you treat Klebsiella pneumoniae?
Definition
  • vigorous, early antibiotic treatment
  • often resistent to multiple antibiotics
Term
How do you treat Mycoplasma pheumonia?
Definition
  • erythromycin
  • tetracycline
Term
How many untreated victims die from anthrax?
Definition
80%
Term
How do you prevent anthrax?
Definition
  • Vaccine for animals
  • antibiotic: penicillin
Term
How do you treat Tetanus?
Definition
  • sedatives
  • muscle relaxants
  • penicillin
  • anti-toxin neutralize toxin
Term
What are the symptoms of E. coli?
Definition
  • fever
  • bloody diarrhea
  • abdominal cramps
  • (+/-) vomiting
Term
What are the symptoms for Gas Gangrene?
Definition
  • infection rapidly spreads through tissue
  • intense pain
  • swelling
  • foul odor of wound
  • toxins can cause systemic damage to heart and nervous system
  • often fatal
Term
What are the symptoms for Streptococcus pyogenes?
Definition
  • fever
  • sore throat
  • (+/-) vomiting
  • headache
  • malaise
  • swollen lymphs and tonsils
  • red tongue and pharyngeal tissue (strawberry tongue)
Term
How long does Strep last?
Definition
1 week
Term
What are the symptoms of Diphetheria?
Definition
  • Doctor does not have time to culture organism in the laboratory
  • May see club shaped rods on gram stainn of smear from the throat
Term
What are the symptoms for Pertussis? 
Definition
  • Increasingly severe cough
  • labored breathing with partially obsturcted airways
  • staccato coughs on exhalation followed by a forced inhalation with a whooping sound
  • malaise
  • fever
  • seizures
Term
How do you diagnose Pertussis?
Definition
symptoms and cultures of B. pertussis from throat
Term
What is the most common bacterial cause of meningitis?
Definition
Haemophilus influenzae
Term
How do you diagnose Neisseria Meningitis?
Definition
Gram negative diplococci in spinal fluid
Term
Who is most effected by Haemophilus Meningitis?
Definition
Children that are 6 months to 2 yrs old, in a day care setting
Term
What are the symptoms for Haemophilus Meningitis?
Definition
  • stiff neck
  • headache
  • listlessness
  • drowsiness
  • irritability
Term
In the 1900's, what was the leading cause of death in the U.S?
Definition
Tuberculosis
Term
How many people with TB are sick within 3 months?
Definition
10%
Term
What is Miliary TB?
Definition
TB that has spread outside the lung
Term
How do you diagnose Tuberculosis?
Definition
  1. Stain acid-fast rods in sputum
  2. Tubercle on X-ray
  3. Culture M. tuberculosis
  4. Tuberculin test
Term
How do you treat TB?
Definition
antibiotics: isoniazid and rifampin for 6-9 months
Term
What is the disease of the poor?
Definition

TB

  • poor personal hygeine
  • poor nutrition
  • crowded living conditions
  • alcoholism
  • depressed immune system
  • age (65 over)
Term
What is a Tuberculin test?
Definition

Inject purified protein derivatives (PPD) from M. tuberculosis under the skin.

  • Positive - red raised spot at injection site, this immiune response indicates that the person has been exposed to TB
  • Negative - no skin change at site of injection
Term
How long does it take to culture TB?
Definition
21 days to 6 weeks to see a colony
Term
1/3 of the worlds population is currently infected with what?
Definition
TB bacillus
Term
What is the disease of Bronchial tubes and Lungs?
Definition
Pneumonia
Term
How many bacterial pneumonia is caused by Streptococcus pneumoniae?
Definition
80%
Term
How can Legionella pneumophila live in such dilute environments?
Definition
It can live inside protozoa... Tetrahymena
Term
What are the symptoms for Strep. pneumonia?
Definition
  • high fever
  • chest pain
  • difficulty breathing
  • rust-colored sputum...(blood in lungs)
Term
What is Pneumoniai called when it involves one lung?
Definition
Lobar pneumonia
Term
What is Pneumoniai called when it involves both lungs?
Definition
Double pneumonia
Term
What is Pneumoniai called when it scatters patches of infection?
Definition
Bronchopneumonia
Term
How big is Mycoplasma pneumoniae?
Definition
.2 microns
Term
What does the exotoxin for Tetanus do?
Definition

Inhibits removal of acetylchlorine from the neuro-muscular junctions.

 

**This is the opposite effect of botulinum toxin

Term
How is the tetanus toxin formed?
Definition
Vegetative cells produce tetanospasmin
Term
What are the symptoms for tetanus?
Definition
  • rapid onset (few hours)
  • muscle stiffness
  • difficulty swallowing
  • clenched teeth
  • fixed smile
  • arching back
  • spasmodic inhalation
  • suffocation
Term
What are the three ways humans can get anthrax?
Definition
  1. Woolsorter's Disease
  2. Gastrointestinal anthrax
  3. Anthrax of the skin
Term

What happens in Woolsorter's disease? and whose at risk?

 

Definition

You inhale spores: pulmonary anthrax

  • tan hides, shear sheep, process wool
Term
How do you get Gastrointestinal anthrax?
Definition
Consumption of contaminated meat
Term
How do you get anthrax of the skin?
Definition
contact with the skin contaminated surfaces
Term
What are the symptoms of skin anthrax?
Definition
boil-like lesions with black crusty edges and septicemia
Term
How do you prevent Tetanus?
Definition
  • immunization: DPT
  • tetnus toxoid
  • formaldehyde - treated toxin
Term
What is Dry Gangrene?
Definition
Tissue death due to lack of blood flow, usually caused by circulatory blockage due to local tissue damage
Term
What is Moist Gangrene or Gas Gangrene
Definition
Same as Dry, but C. perfringens invades dead tissue
Term
What toxins are secreted in gas gangrene?
Definition
  • lecithinase: dissolve cell membranes
  • hyaluronidase: tissue damage
  • hemolysis lysis: red blood cells
Term
In the Black Plague, what was the rat infected with?
Definition
Yersinia pestis
Term
What are the two forms of the Black plague?
Definition

Bubonic plague : rat - flea - man

Pneumonic plague : human - human

Term
What are the symptoms of the Bubonic plague?
Definition
  • blackish pustule at site of flea bite
  • head ache
  • wekaness
  • aches and chills
  • slurred speech
  • confusion
Term
What are the symptoms of the Pneumonic plague? How is it spread?
Definition
  • like pneumonia (cough, sneeze)
Spread by respiratory droplets
Very Contagious!!!
Term
What are the death rates of the Bubonic Plague and Pneumonic plague?
Definition

bubonic = 50% fatality

pneumonica = 100% (ring around the rosie)

Term
What are the symptoms of Lyme Disease?
Definition
  • Red skin lesions at site of tick bite
  • Several days later - 3" diameter, intense red, hot spot ( this is called erythema chromicum migrans "ECM"
  • fever
  • headache
  • nausea
Term
What happens if you have Lyme disease after 1 week to 4 months?
Definition

stiff joints

arthritis

Term
How big is Rocky Mt. Spotted fever?
Definition
Small bacteria is .3 - .7 microns in diameter
Term
What are obligate intracellular bacteria?
Definition
cannot make enough ATP and gets most of it ATP from the host cell
Term
What are the symptoms of the Rocky MT. spotted fever? Two weeks later?
Definition
  • high fever lasting many days
  • skin rash...masulopapular (begins on the palms and soles of the feet and spreads to the trunk)
75% will die after two weeks if left untreated
Term
How do you treat Rickettsia rickettsii?
Definition
  • tetracycline
  • chloramphenicol
  • vaccine for those in high-risk groups
Term
What makes the THIN spirochete in syphilis so difficult?
Definition
  • it cannot be seen under the light microscope
  • you have to use a dark field microscopy
Term
What are the Three stages of syphilis?
Definition
  1. Primary Stage
  2. Secondary Syphilis
  3. Tertiary Syphilis
Term
What happens in stage 1 of syphilis?
Definition

A chancre develops: painless lesion

  • circular purplish ulcer with raised edges at site of inoculation
Term
What happens in the 2nd stage of syphilis?
Definition

3-6 weeks later, the spirochete has spread throughout the body

  • fever
  • swollen lymph nodes
  • skin rash that looks like measles
  • may: lose eyebrows
  • patchy loss of hair
  • jaundice (liver involvement)
Term
What is the MOST spontaneous recovery stage of syphilis?
Definition
Secondary Stage
Term
What happens in the Tertiary Stage of syphilis?
Definition

About 33% of untreated cases develop this final form of disease 

Term
What stage of syphilis is no longer contagious?
Definition
Tertiary Syphilis
Term
What is the third stage of syphilis characterized by?
Definition

Gumma: soft granular lesion

 

Gummas are due to an immunological reaction to the spirochete which has been CLEARED from the body.

Term
What is Congenital syphilis?
Definition
When the Spirochete is able to cross the placenta and infect the newborn.
Term
How do you diagnose Syphilis?
Definition
  1. Observe the spirochete in the primary chancre, scrape the lesion... put onto slide
  2. Test for antibodies in teh blood to T. pallidum
Term
What happens to most cases of Neisseria Meningitis? Few Cases?
Definition

Most cases - upper respiratory infection like influenza

few cases - infection spreads to blood stream septimcemia overwhelms body in 2 hrs.

-Death or 

-bacteria localize to meninges

Term
Where is Neisseria meningitis most prevalent?
Definition
  • Where people are close
  • school
  • military camp
  • prisons
Term
How is Neisseria meningitis spread?
Definition
Spread by Inhalation
Term
What does the C. diphtheriae toxin do?
Definition
  • inhibits eukaryotic protein synthesis
  • kills cells in throat, and white blood cells... creates a pseudomembrane
Term
What do you get 5 injections of at 2, 4, 6, 15 months, and 4-6 years old, and adults every 10 years?
Definition
Diphtheria
Term
What are the sequelae of Strep Throat?
Definition
  1. Rheumatic fever
  2. Glomerulonephritis
Term
What happens when you have Rheumatic fever?
Definition
  • joint pain
  • permanent scarring of the heart valves
  • Saint Vitus' dance
Term
What happens when you have Glomerulonephritis?
Definition
  • kidney damage /// failure
  • Our antibodies to S. pyogenes react with kidney tissue and can cause damage
Term
How do you diagnose Strep Throat?
Definition
  1. Throat Culture - grow S. pyognes on Blood Agar (Group A beta-hemolytic Strep)
  2. Clinical symptoms - 
Term
What is scarlet fever
Definition
when strep throat is accompanied by a skin rash
Term
Why does S. pyogenes preven human white blood cells from engulfing the bacteria?
Definition
Because it is Anti-phagocytic
Term
What creates the sore in H. pylori?
Definition
the ammonia, and an H. pylori cytotoxin destroy mucous-secreting cells
Term
What is used to detect H. pylori?
Definition
A urea breath test
Term
What is travelers diarrhea?
Definition
When Enterotoxigenic E. coli (ETEC) penetrates the intestinal epithelium and produce a toxin that cause gastroenteritis
Term
When sanitation is lacking, what causes diarrhea in infants?
Definition
Enterophatogenic E. coli (EPEC)
Term
What E. coli is often transmitted by undercooked ground beef or bagged spinach?
Definition
Enterohermorrhagic E. coli
Term
What is the most common form of Enterohermorrhagic E. coli (EHEC)?
Definition
serotype O157:H7
Term
What are the silent reservoir for E. coli O157:H7
Definition
Cattle, sheep , goats, deer elk, birds, horse, cats, dogs
Term
Why is Cholera hard to get?
Definition

It is extremely sensitive to stomach acid

 

You get it by ingesting large numbers of bacteria and a afew will pass the stomach

Term
What attaches itself to the intestinal wall and excretes an exotoxin that is an enterotoxin?
Definition
Cholera toxin
Term
What happens when you are infected with Peptic Ulcer?
Definition
It penetrates mucous and attaches to stomach wall, producing the enzyme urease that degrades urea.
Term
How can H. pylori survive in the pH 2 of the stomach?
Definition

Ammonia neutralize the stomach acid in the immediate environment of the bacteria.

 

UREA (urease) -----Carbon Dioxide + Ammonia

Term
How do you prevent Salmonella?
Definition
  • Pasteurize milk and dairy products
  • Proper food handling.. especially poultry and eggs
  • restrict sale of Easter chicks and small turtles
Term
S. typhi is transmitted by the five Fs: What are the five Fs?
Definition
  1. Flies
  2. Food
  3. Fingers
  4. Feces
  5. Fomites
Term
True of False: the S. aureus toxin is resistant to heat.. so, heating the food does not destroy the toxin
Definition
True
Term
True of False: 1oz of botulinum toxin can kill every one in the USA?
Definition
True
Term
How do you prevent Botulism?
Definition
  • Heat food  before eating it
  • toxin is denatured in 10min at 90 deg. C
Term
If spores are in the intestine, and the intestine is anaerobic, why don't we get botulism?
Definition
Adult intestines are not a favorable environment for germination
Term
What are the modes of transmission for botulism?
Definition

Foodborne botulism

Wound botulism

Infant botulism

Term
What was the Endemic in SW US?
Definition
Sylvatic Plague - spread by squirrels and wild rodents
Term
What STD shows no symptoms in 50% of women?
Definition
Gonorrhea
Term
What is Gonococcal ophthalmia?
Definition

New borns eyes become infected as they move through the birth canal.

 

Thats why hospitals give 1% sliver nitrate.. or antibiotics into all newborn eyes at birth

Term
What is the incubation period for Chlamydia?
Definition
1-3 weeks
Term
What STD has similar symptoms to gonorrhea, but milder?
Definition
Chlamydia
Term
True or False: 85-90% of infected individuals of Chlamydia are asymptomatic
Definition
True
Term
What is the most widespread STD in the USA?
Definition
Chlamydia
Term
What is the incubation period of Leprosy (Hansen's Disease)
Definition
3-6 years
Term
How do you treat Leprosy?
Definition
  • Sulfa compounds
  • Dapsone
  • Rifampin
  • Clofazimine
Term
What is an infection at the base of a hair follicle?
Definition
Folliculitis
Term
What is Impetigo derived from?
Definition
S. aureus
Term
What is Toxic Shock Syndrome?
Definition

When S. aureus produces one or more toxins.

  • TSST -1
  • Enterotoxin [A thru E]
Term
How do you prevent Streptococcus mutans?
Definition
  1. Fluoride makes tooth enamel less susceptilble to decay
  2. Remove plaque, physically
  3. Seal teeth with plastic to prevent acid access
  4. Vaccine against S. mutans
  5. Replace S. mutans with an engineered acid-neg strain
Term
What is the O-antigen in E. coli?
Definition
Sugar on the outer surface of the bacterial cell
Term
What is the H-antigen in E. coli?
Definition
Flagella protein
Term
What are the leading causes of foodborned E.coli?
Definition
  • Produce (34%)
  • Ground Beef (33%)
Term
What are some pre-harvest control of E. coli?
Definition
  • Manure management
  • Watertrough and feedbunk management
  • Feed components
  • Probiotics/ Direct fed microbials
  • Vaccination
Term
True or False: Decreasing or eliminating E. coli from cattle will decrease human disease
Definition
True
Term
What type of cattle are most prevalent to have E. coli?
Definition
immature animals (less then 2yrs old)
Term
True of False: 0157 spends more time outside than inside cattle?
Definition

True - on the hair coat

in water troughs

can survive and multiply in cattle feed

can survive and multiply in raw manure

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