Bacteria (redirected from Bacterias)

Bacteria /Bac·te·ria/ (bak-ter´e-ah) in former systems of classification, a division of the kingdom Procaryotae, including all prokaryotic organisms except the blue-green algae (Cyanobacteria).

---

bacteria /bac·te·ria/ (bak-ter´e-ah) plural of bacterium.

---

bac·te·ri·a (bk-tîr-)

n.

Plural of bacterium.

---

Bacteria

Tiny, one-celled forms of life that cause many diseases and infections.

Mentioned in: Antiacne Drugs, Antibiotics, Antibiotics, Ophthalmic, Antibiotics, Topical, Antiseptics, Antituberculosis Drugs, Fluoroquinolones, Urinary Anti-Infectives, Vaginal Pain

---

bacteria,

n.pl 1. small, unicellular microorganisms of the kingdom Monera. The genera vary morphologically, being spheric (cocci), rod-shaped (bacilli), spiral (spirochetes), or comma-shaped (vibrios).
n 2. the phylum in which these microorganisms are classified.

bacteria, aerobic,

n.pl bacteria that require the presence of oxygen to live and grow.

bacteria, anaerobic,

n.pl bacteria that can survive and grow without the presence of free oxygen in their immediate environment. See anaerobe, facultative.

n a microorganism that reacts with the iron in saliva to create a stain on the surface of the teeth. The color of the stain is indicative of the color, or chroma, of the bacteria. E.g., a green stain is caused by bacteria such as
Penicillium and
Aspergillus.

bacteria, resident (oral),

n.pl the microorganisms that are normally in the oral flora of an individual.

---

bacteria

plural of bacterium.

---

anaerobic bacteria

derive energy from fermentative processes in the absence of oxygen. Are found in necrotic or abscessed tissues.

cell-wall deficient bacteria

see L-form bacteria (below).

facultatively anaerobic bacteria

are able to derive energy from aerobic or anaerobic metabolism. Includes most intestinal pathogens.

glucose-non-fermenting, gram-negative bacteria

includes Bordetella, Moraxella and Pseudomonas species.

L-form bacteria

abnormal growth forms that can replicate in the form of small filterable elements with defective or absent cell walls. Spontaneously formed by some bacteria, e.g. Streptococcus spp., Bacterioides spp., and by others when synthesis is impaired. L-forms have been associated with infections in dogs and cats.

marker bacteria

those added to provide a means of identifying the bacteria being studied. See serratiarubidaea.

obligate aerobic bacteria

require oxygen as a source of energy and therefore for growth.

putrefactive bacteria

see decomposition.

resistant bacteria

see antimicrobial resistance.

ruminal bacteria

the ruminal fluid of the normal cow contains 10 to 50 million million organisms per gram. Bacteria outnumber the protozoan population many times over. The genera and species of bacteria present vary between times in the same cow. The function of the ruminal bacteria is to digest the food taken in and thus allow its absorption. This includes the lysis of cellulose, xylanol, starch, dextrin, pectin, protein, lipids, the utilization of glycerol and lactate, and the fermentation of soluble sugars. The end products of the digestive process include methane, formate, acetate, ethanol, propionate, lactate, butyrate, succinate, valerate, caproate, hydrogen and carbon dioxide.

spoilage bacteria

see decomposition.