Which of the following is mainly produced by the activity of anaerobic bacteria on sewage?

Which of the following is mainly produced by the activity of anaerobic bacteria on sewage?
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Which of the following is mainly produced by the activity of anaerobic bacteria on sewage? A. Marsh gas B. Laughing gas C. Propane D. Mustard gas
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Which of the following is mainly produced by the activity of anaerobic bacteria on sewage? (a) Laughing gas (b) Propane (c) Mustard gas (d) Marsh gas

Description : Which of the following is mainly produced by the activity of anaerobic bacteria on sewage? (a) Laughing gas (b) Propane (c) Mustard gas (d) Marsh gas

Last Answer : (d) Marsh gas

Main component of sewage gas produced during anaerobic decomposition of organic waste (by suitable bacteria) during sewage disposal is (A) H2 (B) CH4 (C) CO2 (D) N2

Description : Main component of sewage gas produced during anaerobic decomposition of organic waste (by suitable bacteria) during sewage disposal is (A) H2 (B) CH4 (C) CO2 (D) N2

Last Answer : (B) CH4

The domestic sewage in large cities (a) has a high BOD as it contains both aerobic and anaerobic bacteria (b) is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment Plants (STPs) (c) when treated in STPs does not really require the aeration step as the sewage contains adequate oxygen (d) has very high amount of suspended solids and dissolved salts.

Description : The domestic sewage in large cities (a) has a high BOD as it contains both aerobic and anaerobic bacteria (b) is processed by aerobic and then anaerobic bacteria in the secondary treatment in ... sewage contains adequate oxygen (d) has very high amount of suspended solids and dissolved salts.

Last Answer : (b) is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment Plants (STPs)

The type of bacteria which is active in trickling filter during biological treatment of sewage is the __________ bacteria. (A) Anaerobic (B) Saprophytic (C) Aerobic (D) Parasitic

Description : The type of bacteria which is active in trickling filter during biological treatment of sewage is the __________ bacteria. (A) Anaerobic (B) Saprophytic (C) Aerobic (D) Parasitic

Last Answer : (C) Aerobic

Select the correct statement from the following. (a) Biogas is produced by the activity of aerobic bacteria on animal waste. (b) Methanobacterium is an aerobic bacterium found in rumen of cattle. (c) Biogas, commonly called gobar gas, is pure methane. (d) Activated sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria.

Description : Select the correct statement from the following. (a) Biogas is produced by the activity of aerobic bacteria on animal waste. (b) Methanobacterium is an aerobic bacterium found in rumen of ... sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria.

Last Answer : (d) Activated sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria.

The treatment of the following patient should include: a. Initial empiric therapy directed against both aerobes and anaerobes b. The addition of anti-fungal therapy in an elderly patient c. A minimum of two weeks of antibiotic therapy is indicated d. The addition of appropriate antibiotic therapy has made surgical therapy unnecessary in such cases e. Either a single agent or combination therapy is appropriate if the agents selected possess activity against both aerobic and anaerobic bacteria

Description : The treatment of the following patient should include: a. Initial empiric therapy directed against both aerobes and anaerobes b. The addition of anti-fungal therapy in an elderly patient ... therapy is appropriate if the agents selected possess activity against both aerobic and anaerobic bacteria

Last Answer : Answer: a, e The primary treatment for a perforated viscus is surgical, however antimicrobial therapy is an extremely important adjunct. Empiric antibiotic therapy for secondary ... whereas longer periods are indicated for immunosuppressed patients and with patients with extensive contamination

Tinidazole differs from metronidazole in that: A. It is not active against anaerobic bacteria B. It has a broader spectrum of activity C. It has a longer elimination half life D. It has better oral absorption

Description : Tinidazole differs from metronidazole in that: A. It is not active against anaerobic bacteria B. It has a broader spectrum of activity C. It has a longer elimination half life D. It has better oral absorption

Last Answer : C. It has a longer elimination half life

The temperature affects the A. Biological activity of bacteria in sewage B. Solubility of gases in sewage C. Viscosity of sewage D. All the above

Description : The temperature affects the A. Biological activity of bacteria in sewage B. Solubility of gases in sewage C. Viscosity of sewage D. All the above

Last Answer : ANS: D

The sewage treatment in septic tanks is due to A. Anaerobic decomposition B. Aerobic decomposition C. Parasitic decomposition D. None of these

Description : The sewage treatment in septic tanks is due to A. Anaerobic decomposition B. Aerobic decomposition C. Parasitic decomposition D. None of these

Last Answer : ANS: A

The sewage treatment units in which anaerobic decomposition of organic matter is used, are called A. Imhoff tanks B. Trickling filters C. Sludge sedimentation tanks D. None of these

Description : The sewage treatment units in which anaerobic decomposition of organic matter is used, are called A. Imhoff tanks B. Trickling filters C. Sludge sedimentation tanks D. None of these

Last Answer : ANS: B

Which of the following is put into anaerobic sludge digester for further sewage treatment? (a) Primary sludge (b) Floating debris (c) Effluents of primary treatment (d) Activated sludge

Description : Which of the following is put into anaerobic sludge digester for further sewage treatment? (a) Primary sludge (b) Floating debris (c) Effluents of primary treatment (d) Activated sludge

Last Answer : (d) Activated sludge

Aerobic activity is maximum A. In freshly produced sewage B. At sewer pipes C. In sewer treatment plants D. None of these

Description : Aerobic activity is maximum A. In freshly produced sewage B. At sewer pipes C. In sewer treatment plants D. None of these

Last Answer : ANS: A

Bio-gas generated through anaerobic process mainly consists of a) only methane b) methane and ca

Description : Bio-gas generated through anaerobic process mainly consists of a) only methane b) methane and ca

Last Answer : b) methane and carbon dioxide

Are there any beneficial anaerobic bacteria which are found in the human gut?

Description : Are there any beneficial anaerobic bacteria which are found in the human gut?

Last Answer : There’s several species of Lactobacillus that live in the human gut that are so good for you that people buy little yoghurt drinks full of them.

Anaerobic bacteria?

Description : Anaerobic bacteria?

Last Answer : DefinitionAnaerobic bacteria are bacteria that do not live or grow in the presence of oxygen.In humans, this type of bacteria is most commonly found in the gastrointestinal tract. It ... a role in conditions such as appendicitis, diverticulitis, and perforation of the bowel.Alternative NamesAnaerobe

The following statement(s) is/are true concerning initial microbiologic diagnostic techniques. a. Appropriate expeditious transport of specimens to the microbiology laboratory is essential for obtaining accurate clinical information b. The use of potassium hydroxide in preparing a specimen slide for light microscopy will be useful in identification of anaerobic bacteria c. Antibiotic sensitivity is determined by exposing the specific microorganism to varying amounts of antibiotic with the concentration of the antibiotic inhibiting growth referred to as the MIC (minimal inhibitory concentration) d. Serum levels of antimicrobial agents should achieve in excess of a 4-to 8-fold increase over the MIC to be considered clinically efficacious.

Description : The following statement(s) is/are true concerning initial microbiologic diagnostic techniques. a. Appropriate expeditious transport of specimens to the microbiology laboratory is essential for obtaining accurate ... a 4-to 8-fold increase over the MIC to be considered clinically efficacious.

Last Answer : Answer: a, c, d Because most surgical infections are polymicrobial, specimens should be cultured for aerobic and anaerobic bacteria, as well as fungi. Although aerobic and aerotolerant ... fold increase over MIC during the peak serum level have been demonstrated to be clinically efficacious

If a necrotizing soft tissue infection is considered, therapy mandates: a. Empiric administration of antibiotics active against gram-positive, gram-negative, and anaerobic bacteria b. Due to usually resistant species, penicillin is not indicated c. Immediate operative intervention and aggressive resection of all involved tissues is mandatory d. The use of hyperbaric oxygen has been demonstrated to be clearly advantageous

Description : If a necrotizing soft tissue infection is considered, therapy mandates: a. Empiric administration of antibiotics active against gram-positive, gram-negative, and anaerobic bacteria b. Due to usually ... is mandatory d. The use of hyperbaric oxygen has been demonstrated to be clearly advantageous

Last Answer : Answer: a, c Identification of a necrotizing, soft tissue infection mandates immediate operative intervention with aggressive resection of all involved tissues and empiric ... remains without controlled trials demonstrating any additional benefits derived from hyperbaric oxygen therapy

Bacteria which need oxygen for growth are called a. Thermophilic bacteria b. Microaerophilic bacteria c. Facultative anaerobic bacteria d. Mycobacteria

Description : Bacteria which need oxygen for growth are called a. Thermophilic bacteria b. Microaerophilic bacteria c. Facultative anaerobic bacteria d. Mycobacteria

Last Answer : Ans: B

In septic tanks, decomposition of organic bacteria, is done by A. Anaerobic bacteria B. Aerobic bacteria C. Both types of bacterias D. None of these

Description : In septic tanks, decomposition of organic bacteria, is done by A. Anaerobic bacteria B. Aerobic bacteria C. Both types of bacterias D. None of these

Last Answer : ANS: A

Pick up the correct statement from the following: A. Anaerobic bacteria flourish in the absence of oxygen B. Aerobic bacteria flourish in the presence of oxygen C. Facultative bacteria flourish with or without oxygen D. All the above

Description : Pick up the correct statement from the following: A. Anaerobic bacteria flourish in the absence of oxygen B. Aerobic bacteria flourish in the presence of oxygen C. Facultative bacteria flourish with or without oxygen D. All the above

Last Answer : ANS: D

What is the difference between aerobic and anaerobic bacteria?

Description : What is the difference between aerobic and anaerobic bacteria?

Last Answer : Bacteria which need oxygen of respiration are called aerobic bacteria. The anaerobic bacteria do not need oxygen for reparation. Oxygen may rather be injurious of r them. 

Presence of __________ bacteria in water causes disease like typhoid. (A) Aerobic (B) Pathogenic (C) Anaerobic (D) Non-pathogenic

Description : Presence of __________ bacteria in water causes disease like typhoid. (A) Aerobic (B) Pathogenic (C) Anaerobic (D) Non-pathogenic

Last Answer : (B) Pathogenic

A masonry structure built below ground level, where biochemical reaction takes place due to anaerobic bacteria is called (A) Cesspool (B) Lagoon (C) Skimming mill (D) Septic tank

Description : A masonry structure built below ground level, where biochemical reaction takes place due to anaerobic bacteria is called (A) Cesspool (B) Lagoon (C) Skimming mill (D) Septic tank

Last Answer : (D) Septic tank

_____ bacteria live as individuals and do not live in biofilms. a. Planktonic b. Anaerobic c. Aerobic d. Facultative anaerobic

Description : _____ bacteria live as individuals and do not live in biofilms. a. Planktonic b. Anaerobic c. Aerobic d. Facultative anaerobic

Last Answer : a. Planktonic

Anaerobic degradation of proteins brought about by bacteria and fungi give the products like A- mercaptans and indole B-H2S C-both (a) and (b) D-None of these

Description : Anaerobic degradation of proteins brought about by bacteria and fungi give the products like A- mercaptans and indole B-H2S C-both (a) and (b) D-None of these

Last Answer : both (a) and (b)

The bacterias which require free oxygen for their survival, are called (A) Aerobic bacterias (B) Anaerobic bacterias (C) Facultative bacteria (D) None of these

Description : The bacterias which require free oxygen for their survival, are called  (A) Aerobic bacterias  (B) Anaerobic bacterias  (C) Facultative bacteria  (D) None of these 

Last Answer : (A) Aerobic bacterias 

What is not true about tobacco smoking: a. Redox potential favours growth of anaerobic bacteria. b. It is caries immuno-suppressive. c. It is adrenergic. d. Affects neutrophils and chemotactic factors.

Description : What is not true about tobacco smoking: a. Redox potential favours growth of anaerobic bacteria. b. It is caries immuno-suppressive. c. It is adrenergic. d. Affects neutrophils and chemotactic factors.

Last Answer : b. It is caries immuno-suppressive.

What is not true about tobacco smoking, A. Redox potential is reduced resulting in anaerobic bacteria B. It is immuno-suppressive C. It is adrenergic

Description : What is not true about tobacco smoking, A. Redox potential is reduced resulting in anaerobic bacteria B. It is immuno-suppressive C. It is adrenergic

Last Answer : B. It is immuno-suppressive

What is NOT true about tobacco smoking: A. Redox potential favours growth of anaerobic bacteria B. It is caries immuno-suppressive C. It is adrenergic D. Affects neutrophils and chemotactic factors

Description : What is NOT true about tobacco smoking: A. Redox potential favours growth of anaerobic bacteria B. It is caries immuno-suppressive C. It is adrenergic D. Affects neutrophils and chemotactic factors

Last Answer : B. It is caries immuno-suppressive

In addition to fungi, amphotericin B is active against the following pathogen: A. Anaerobic bacteria B. Giardia C. Leishmania D. Rickettsiae

Description : In addition to fungi, amphotericin B is active against the following pathogen: A. Anaerobic bacteria B. Giardia C. Leishmania D. Rickettsiae

Last Answer : C. Leishmania

Antimicrobials effective against anaerobic bacteria include the following except: A. Tobramycin B. Clindamicin C. Chloramphenicol D. Metronidazole

Description : Antimicrobials effective against anaerobic bacteria include the following except: A. Tobramycin B. Clindamicin C. Chloramphenicol D. Metronidazole

Last Answer : A. Tobramycin

Bacteria or molds that require atmospheric oxygen are ____. a. anaerobic c. mesophilic b. aerobic d. thermophilic

Description : Bacteria or molds that require atmospheric oxygen are ____. a. anaerobic c. mesophilic b. aerobic d. thermophilic

Last Answer : b. aerobic

Metronidazole is used in peridontal abscess because of activity against: A. Entamoeba histolytica B. Giardia lamblia C. Anaerobic bacilli D. Aerobic gram positive cocci

Description : Metronidazole is used in peridontal abscess because of activity against: A. Entamoeba histolytica B. Giardia lamblia C. Anaerobic bacilli D. Aerobic gram positive cocci

Last Answer : C. Anaerobic bacilli

Secondary sewage treatment is mainly a

Description : Secondary sewage treatment is mainly a

Last Answer : Secondary sewage treatment is mainly a A. Primary treatements B. Secondary treatement C. Tertiary treatment D. All of the above

Secondary sewage treatment is mainly a

Description : Secondary sewage treatment is mainly a

Last Answer : Secondary sewage treatment is mainly a A. Biological process B. Physical process C. Mechanical process D. Chemical process

A well oxidized sewage contains nitrogen mainly as A. Nitrates B. Nitrites C. Free ammonia D. None of these

Description : A well oxidized sewage contains nitrogen mainly as A. Nitrates B. Nitrites C. Free ammonia D. None of these

Last Answer : ANS: A

Secondary sewage treatment is mainly a (a) physical process (b) mechanical process (c) chemical process (d) biological process.

Description : Secondary sewage treatment is mainly a (a) physical process (b) mechanical process (c) chemical process (d) biological process.

Last Answer : (d) biological process.

Sewage treatment process in which part of decomposer bacteria is recycled into starting of the process is called :

Description : Sewage treatment process in which part of decomposer bacteria is recycled into starting of the process is called :

Last Answer : Sewage treatment process in which part of decomposer bacteria is recycled into starting of the ... C. Primary treatement D. Tertiary treatment.

When domestic sewage / fertilisers is released into rivers , the growth of algae and bacteria is a) promoted b)not affected c)inhibited d)None of the above

Description : When domestic sewage / fertilisers is released into rivers , the growth of algae and bacteria is a) promoted b)not affected c)inhibited d)None of the above

Last Answer : a) promoted

Pick up the incorrect statement from the following: A. The process of decomposing the organic matter under controlled anaerobic conditions, is called sludge digestion B. Sludge digestion is carried out in sludge tank C. The gases produced in sludge digestion process, contain 75% carbon dioxide D. The gases produced in sludge digestion process, contain 75% methane

Description : Pick up the incorrect statement from the following: A. The process of decomposing the organic matter under controlled anaerobic conditions, is called sludge digestion B. Sludge digestion is carried ... contain 75% carbon dioxide D. The gases produced in sludge digestion process, contain 75% methane

Last Answer : ANS: C

What gases are produced in anaerobic sludge digesters? (a) Methane and CO2 only (b) Methane, Hydrogen sulphide and CO2 (c) Methane, Hydrogen sulphide and O2 (d) Hydrogen sulphide and CO2

Description : What gases are produced in anaerobic sludge digesters? (a) Methane and CO2 only (b) Methane, Hydrogen sulphide and CO2 (c) Methane, Hydrogen sulphide and O2 (d) Hydrogen sulphide and CO2

Last Answer : (b) Methane, Hydrogen sulphide and CO2

Which substances are produced by anaerobic respiration in yeast? Carbo n dioxid e { { # # Alcohol Lactic Acid Water # # { (a) # # { (b) # { { (c) # { { (d) Key { = produced, #= not produced.

Description : Which substances are produced by anaerobic respiration in yeast? Carbo n dioxid e { { # # Alcohol Lactic Acid Water # # { (a) # # { (b) # { { (c) # { { (d) Key { = produced, #= not produced.

Last Answer : (a)

When domestic sewage mixes with river water (a) small animals like rats will die after drinking river water (b) the increased microbial activity releases micronutrients such as iron (c) the increased microbial activity uses up dissolved oxygen (d) the river water is still suitable for drinking as impurities are only about 0.1%.

Description : When domestic sewage mixes with river water (a) small animals like rats will die after drinking  river water (b) the increased microbial activity releases  micronutrients such as iron (c) the increased ... (d) the river water is still suitable for drinking as  impurities are only about 0.1%.

Last Answer : (c) the increased microbial activity uses up  dissolved oxygen

Measuring Biochemical Oxygen Demand (BOD) is a method used for (a) estimating the amount of organic matter in sewage water (b) working out the efficiency of oil driven automobile engines (c) measuring the activity of Saccharomyces cerevisiae in producing curd on a commercial scale (d) working out the efficiency of RBCs about their capacity to carry oxygen.

Description : Measuring Biochemical Oxygen Demand (BOD) is  a method used for  (a) estimating the amount of organic matter in  sewage water (b) working out the efficiency of oil driven  automobile engines ... commercial  scale (d) working out the efficiency of RBCs about their  capacity to carry oxygen.

Last Answer : (a) estimating the amount of organic matter in  sewage water

Measuring Biochemical Oxygen Demand (BOD) is a method used for (a) estimating the amount of organic matter in sewage water (b) working out the efficiency of oil driven automobile engines (c) measuring the activity of Saccharomyces cerevisiae in producing curd on a commercial scale (d) working out the efficiency of RBCs about their capacity to carry oxygen.

Description : Measuring Biochemical Oxygen Demand (BOD) is a method used for (a) estimating the amount of organic matter in sewage water (b) working out the efficiency of oil driven automobile engines (c) ... a commercial scale (d) working out the efficiency of RBCs about their capacity to carry oxygen.

Last Answer : (a) estimating the amount of organic matter in sewage water

72. Measuring Biochemical Oxygen Demand (BOD) is a method used for (1) Working out the efficiency of R.B.Cs. about their capacity to carry oxygen (2) Estimating the amount of organic matter is sewage water (3) Working out the efficiency of oil driven automobile engines (4) Measuring the activity of Sacccharomyces cerevisae in producing curd on a commercial scale

Description : 72. Measuring Biochemical Oxygen Demand (BOD) is a method used for (1) Working out the efficiency of R.B.Cs. about their capacity to carry oxygen (2) Estimating the amount of ... driven automobile engines (4) Measuring the activity of Sacccharomyces cerevisae in producing curd on a commercial scale

Last Answer : Estimating the amount of organic matter is sewage water

Biogas produced by the fermentation of animal dung, human sewage or crop residues in an airtight container is rich in?

Description : Biogas produced by the fermentation of animal dung, human sewage or crop residues in an airtight container is rich in?

Last Answer : Methane

Drug resistance in bacteria is mainly determined by factor: a. F b. R c. Col d. Lysogenic factor

Description : Drug resistance in bacteria is mainly determined by factor: a. F b. R c. Col d. Lysogenic factor

Last Answer : Ans: D

One scientist cultured Cladophora in a suspension of Azotobacter and illuminated the culture by splitting light through a prism. He observed that bacteria accumulated mainly in the region of (a) violet and green light (b) indigo and green light (c) orange and yellow light (d) blue and red light.

Description : One scientist cultured Cladophora in a suspension of Azotobacter and illuminated the culture by splitting light through a prism. He observed that bacteria accumulated mainly in the region of (a) violet and green light (b) indigo and green light (c) orange and yellow light (d) blue and red light.

Last Answer : (d) blue and red light.

Which statement BEST describes plaque: A. It is a soft film composed mainly of food debris and can not be rinsed off teeth B. It is a soft film composed mainly of food debris and can be rinsed off teeth C. It is a soft film composed mainly of none calcified bacteria and can not be rinsed off the teeth D. It is a soft film composed mainly of dextran and can not be rinsed off the teeth E. It is a soft film composed mainly of dextran and can be rinsed off teeth.

Description : Which statement BEST describes plaque: A. It is a soft film composed mainly of food debris and can not be rinsed off teeth B. It is a soft film composed mainly of food debris and can be rinsed off ... rinsed off the teeth E. It is a soft film composed mainly of dextran and can be rinsed off teeth.

Last Answer : C. It is a soft film composed mainly of none calcified bacteria and can not be rinsed off the teeth