### microbacteria:

Bacterial conjunctivitis
* affects both eyes and causes a heavy discharge.
* is less likely in adults, more common in children
  - seen to a larger extent in children
* is the most common eye infection
  - type of eye infection
  - twice as common as viral conjunctivitis
* lasts about a week.
* tends to produce a purulent discharge.

Bacterial endocarditis
* disease of the heart valves or the inner lining of the heart.
* is an infection of the heart valves or the lining of the heart
* rare but life threatening disease.
* refers specifically to infection by a bacterial agent.

### microbacteria:

Beneficial bacteria
* Most beneficial bacteria play roles
  - produce enzymes
* Some beneficial bacteria inhabit intestinal tracts
* are integral in balancing and counteracting unfriendly bacteria.
* convert the waste to nitrate which the plants use in the growth process.
* digest Ammonia and create another toxic chemical known as Nitrite.
* have multiple functions in our bodies.
* is also present in the gravel.
* play useful roles in the aspects of nutrition and prevention of disease.
* produce valuable vitamins and other nutrients.

Chemosynthetic bacteria
* are found in benthic marine ecosystems
  - the primary producers and form the base of vent food webs
* make their own food energy by consuming chemicals in hydrothermal vents.
* obtain energy by oxidizing hydrogen sulfide.
* use hydrogen sulfide as an energy source instead of sunlight.

Clostridia
* Some Clostridia are opportunistic pathogens.
* also infect wounds.
* are a group of bacteria that includes the organisms that cause tetanus and enterotoxemia
  - organisms that thrive under moist conditions and degrade sugars and proteins
  - spore-forming obligate anaerobes
* can cause acute, often fatal scour in young piglets.

Common bacteria
* Most common bacteria cause infection
  - nasal infection
* Some common bacteria cause life
  - ulcer
  - grow on naphthalene, breaking it down to carbon monoxide
* are now so resistant to antibiotics that they can kill.

Deadly bacteria
* pop up in fruit flies.
* reproduce in less than one hour, doubling all the time.

Denitrifying bacteria
* Most denitrifying bacteria are heterotrophs, using organic carbon compounds as a source of energy.
* perform almost the reverse of the nitorgen fixing bacteria.

Different bacteria
* Many different bacteria can cause iatrogenic infection
  - infect the wounds
* can act efficiently together
  - grow in almost any water, especially at warm temperatures
* generate reducing power in different ways.
* have different tolerances to salt
  - towards low water activities
* live in different portions of both the large and small intestine.
* produce different bacteriocins
  - textures and flavours of curd
  - waste products

E.coli bacteria
* E.Coli bacteria cause the second.
* can survive both refrigeration and freezer storage.

Eubacteria
* are all other bacteria
  - enclosed by a cell wall
  - the most common organism on the planet and are found everywhere
  - unicellular, microscopic and can live nearly anywhere
* get their nutrition from sunlight and inorganic and organic matter.
* have prokaryotic cells and cell walls made of peptidogycan.

Friendly bacteria
* Most friendly bacteria have positive effects.
* Some friendly bacteria find in ferment food
* do much more than just fight potentially harmful organisms.
* have many important functions in our bodies
  - the ability to neutralize nitrates
* live on the intestinal walls among the finger-like membranes called villi.
* resides in large quantities in the gastrointestinal tract of animals and humans.
* synthesize valuable nutrients by digesting portions of the fecal mass.