What is the role of bacteria in the sewage treatment process?
Sep 05, 2021 · Which of the following bacterial genera is useful for sewage treatment? A) Neisseria B) Zoogloea C) Thiobacillus D) Spirillum E) Nitrosomonas
How many types of bacteria are found in sewage?
A new species Aeromonas dechromatica transforming high-toxical six-valence chromium into low-toxical three-valent ones is described. The grounds of biotechnologies of the use of the breeded cultures for treatment of industrial sewage are stated.
Are there anaerobic bacteria in the wastewater treatment plant?
Which of the following bacterial genera is useful for sewage treatment? A) Burkholderia B) Thiobacillus C) Neisseria D) Zoogloea E) Nitrosomonas
Are anaerobic bacteria in sewage sludge a health hazard?
Which of the following bacterial genera is useful for sewage treatment? Zoogloea. Which of the following diseases is NOT associated with bacteria that form endospores? ... Which of the following bacterial genera includes species that protect areas of the body such as the intestinal tract and the vagina from invasion by pathogens?
Which bacterial genera plays an important role in environmental nitrogen cycles?
The primary ecological role of members of the genus Nitrobacter is to oxidize nitrite to nitrate, a primary source on inorganic nitrogen for plants. This role is also essential in aquaponics.
Which of the following bacterial genera plays an important role in environmental nitrogen cycles quizlet?
Which of the following bacterial genera plays an important role in environmental nitrogen cycles? in the phylum Firmicutes and include Clostridia and Mycoplasma.
Which of the following bacterial genera produces endospores?
Endospores are dormant alternate life forms produced by the genus Bacillus, the genus Clostridium, and a number other genera of bacteria, including Desulfotomaculum, Sporosarcina, Sporolactobacillus, Oscillospira, and Thermoactinomyces.3 Jan 2021
Which bacterial genera are known for production of endospores quizlet?
What produces endospores? The Gram-positive bacteria Bacillus and Clostridium. The process of endospore formation, requires 8-10 hours and proceeds in seven steps.
Which of the following bacterial genera has an outer membrane?
gram-negative bacteriaOne of the several unique characteristics of gram-negative bacteria is the structure of the bacterial outer membrane. The outer leaflet of this membrane contains lipopolysaccharide (LPS), whose lipid A portion acts as an endotoxin.
What are flexible spiral shaped bacteria called?
Spirilla (sing. spirillum) shapes are curved-shaped bacteria which can range from a gently curved shape to a corkscrew spiral.
What is the primary stain used in the Schaeffer Fulton staining method?
The Malachite green staining (Schaeffer-Fulton method ) is the most common method used to perform endospore staining. Malachite green stain can also used as a simple stain for bacterial cells. The Schaeffer-Fulton method uses heat to push the primary dye (malachite green) into the endospore.
Do all bacteria have flagella?
Yes. Flagella are present in both Gram-positive and Gram-negative bacteria. Bacterial flagella are microscopic coiled, hair-like structures, which are involved in the locomotion.
Which of the following characteristics can be used to differentiate between the genera Bacillus and Clostridium?
Microbiologists distinguish Clostridium from Bacillus by the following features: Clostridium grows in anaerobic conditions; Bacillus grows in aerobic conditions. Clostridium forms bottle-shaped endospores; Bacillus forms oblong endospores.
What function do bacterial endospores perform?
It allows the bacterium to produce a dormant and highly resistant cell to preserve the cell's genetic material in times of extreme stress. Endospores can survive environmental assaults that would normally kill the bacterium.
Which of the following bacteria do not form endospores?
Listeria monocytogenes is a Gram-positive rod-shaped bacterium related to Bacillus and Clostridium, but it does not form endospores.
Which group of bacteria do the pathogenic species of Treponema and Borrelia belong to?
spirochete, (order Spirochaetales), also spelled spirochaete, any of a group of spiral-shaped bacteria, some of which are serious pathogens for humans, causing diseases such as syphilis, yaws, Lyme disease, and relapsing fever. Examples of genera of spirochetes include Spirochaeta, Treponema, Borrelia, and Leptospira.
What is the role of bacteria in sewage treatment?
The role of bacteria in the sewage treatment process. One area of sewage treatment that is not well understood is the bacterial decomposition process. Bacteria may be aerobic, anaerobic or facultative. Aerobic bacteria require oxygen for life support whereas anaerobes can sustain life without oxygen. Facultative bacteria have the capability of ...
What is the effect of anaerobe bacteria on the effluent?
This is something you can equate to lower costs, increased capacity, and an improved quality of effluent; even freedom from bad odors which may typically result when anaerobe bacteria become dominant and in their decomposition process, produce hydrogen sulfide gas and similar by-products.
Why is oxygen added to wastewater treatment plants?
In the typical sewage treatment plant, oxygen is added to improve the functioning of aerobic bacteria and to assist them in maintaining superiority over the anaerobes. Agitation, settling, pH and other controllable are carefully considered and employed as a means of maximizing the potential of bacterial reduction of organic in the wastewater.
What is the growth curve of bacteria?
The amount of growth is the function of two variables: - environment and food. The pattern which actually results is known as the bacterial growth rate curve. Initially dehydrated products (dry) must first re-hydrate and acclimate in a linear growth phase before the exponential rate is reached.
How often do single-celled organisms divide?
Assuming an adequate food supply, they then grow and divide again like the original cell. Every time a cell splits, approximately every 20 to 30 minutes, a new generation occurs.
Do aerobic bacteria need oxygen?
Aerobic bacteria require oxygen for life support whereas anaerobes can sustain life without oxygen. Facultative bacteria have the capability of living either in the presence or in the absent of oxygen. In the typical sewage treatment plant, oxygen is added to improve the functioning of aerobic bacteria and to assist them in maintaining superiority ...