Air used in aerobic fermentation must be sterilized, otherwise the (A) Recovery of product will be difficult (B) Contamination of pure culture would result (C) Uniformity of product cannot be achieved (D) None of these

Air used in aerobic fermentation must be sterilized, otherwise the
(A) Recovery of product will be difficult
(B) Contamination of pure culture would result
(C) Uniformity of product cannot be achieved
(D) None of these
by

1 Answer

Answer :

(B) Contamination of pure culture would result
by

Related questions

The fruit when kept is open, tastes bitter after 2 hours because of (A) Loss of water from juice (B) Decreased concentration of fructose in juice (C) Fermentation by yeast (D) Contamination by bacterial enzymes

Description : The fruit when kept is open, tastes bitter after 2 hours because of (A) Loss of water from juice (B) Decreased concentration of fructose in juice (C) Fermentation by yeast (D) Contamination by bacterial enzymes

Last Answer : Answer : D

Bacterial decomposition of biological material under anaerobic condition is – (1) fermentation (2) fertilization (3) contamination (4) composting

Description : Bacterial decomposition of biological material under anaerobic condition is – (1) fermentation (2) fertilization (3) contamination (4) composting

Last Answer : (1) fermentation Explanation: Fermentation is the process by which complex organic compounds, such as glucose, are broken down by the action of enzymes into simpler com-pounds in the absence ... carbon dioxide by fermentation. Fermentation is used to produce wine, beer, yogurt and other products.

Bacterial decomposition of biological material under anaerobic condition is (1) fermentation (2) fertilization (3) contamination (4) composting

Description : Bacterial decomposition of biological material under anaerobic condition is (1) fermentation (2) fertilization (3) contamination (4) composting

Last Answer : fermentation

Which one of the following is NOT part of the streak-plate method? a. Making four sets of streaks on a plate. b. Diluting a mixed culture in molten agar. c. Using a mixed culture. d. Using a sterilized loop.

Description : Which one of the following is NOT part of the streak-plate method? a. Making four sets of streaks on a plate. b. Diluting a mixed culture in molten agar. c. Using a mixed culture. d. Using a sterilized loop.

Last Answer : b. Diluting a mixed culture in molten agar.

Production of alcohol by fermentation of molasses is a/an __________ process. (A) Anaerobic (B) Aerobic (C) Endothermic (D) Both (B) and (C)

Description : Production of alcohol by fermentation of molasses is a/an __________ process. (A) Anaerobic (B) Aerobic (C) Endothermic (D) Both (B) and (C)

Last Answer : (B) Aerobic

Penicillin is made employing __________ fermentation process. (A) Continuous (B) Aerobic batch (C) Anaerobic batch (D) None of these

Description : Penicillin is made employing __________ fermentation process. (A) Continuous (B) Aerobic batch (C) Anaerobic batch (D) None of these

Last Answer : (B) Aerobic batch

“Pop off” of a porcelain veneer from the under the lying gold crown is due to:** A. Too thick application of pure gold surface conditioner B. Contamination at the porcelain metal interface C. Under firing the opaque layer D. All of the above

Description : “Pop off” of a porcelain veneer from the under the lying gold crown is due to:** A. Too thick application of pure gold surface conditioner B. Contamination at the porcelain metal interface C. Under firing the opaque layer D. All of the above

Last Answer : B. Contamination at the porcelain metal interface

The recovery of penicillin from the acidified fermentation broth is done by (A) Distillation (B) Evaporation (C) Absorption (D) Liquid extraction

Description : The recovery of penicillin from the acidified fermentation broth is done by (A) Distillation (B) Evaporation (C) Absorption (D) Liquid extraction

Last Answer : (D) Liquid extraction

Difference between Aerobic respiration and Fermentation? -Biology

Description : Difference between Aerobic respiration and Fermentation? -Biology

Last Answer : answer:

NADH is oxidised to `NAD^(+)` rather slowly in fermentation, however the reaction is very vigorous in case of aerobic respiration

Description : NADH is oxidised to `NAD^(+)` rather slowly in fermentation, however the reaction is very vigorous in case of aerobic respiration

Last Answer : NADH is oxidised to `NAD^(+)` rather slowly in fermentation, however the reaction is very vigorous in case of aerobic respiration

Fermentation accounts for only a partial breakdown of glucose whereas in aerobic respiration it is completely degrated to `CO_(2)` and `H_(2)O`.

Description : Fermentation accounts for only a partial breakdown of glucose whereas in aerobic respiration it is completely degrated to `CO_(2)` and `H_(2)O`.

Last Answer : Fermentation accounts for only a partial breakdown of glucose whereas in aerobic respiration it is completely degrated to `CO_(2)` and `H_(2)O`.

NADH is oxidised to `NAD^(+)` rather slowly in fermentation, however the reaction is very vigorous in case of aerobic respiration

Description : NADH is oxidised to `NAD^(+)` rather slowly in fermentation, however the reaction is very vigorous in case of aerobic respiration

Last Answer : NADH is oxidised to `NAD^(+)` rather slowly in fermentation, however the reaction is very vigorous in case of aerobic respiration

Fermentation accounts for only a partial breakdown of glucose whereas in aerobic respiration it is completely degrated to `CO_(2)` and `H_(2)O`.

Description : Fermentation accounts for only a partial breakdown of glucose whereas in aerobic respiration it is completely degrated to `CO_(2)` and `H_(2)O`.

Last Answer : Fermentation accounts for only a partial breakdown of glucose whereas in aerobic respiration it is completely degrated to `CO_(2)` and `H_(2)O`.

Fermentation is a type of ______ process. (1) Aerobic Respiration (2) Anaerobic Respiration (3) Exothermic Reaction (4) Transpiration

Description : Fermentation is a type of ______ process. (1) Aerobic Respiration (2) Anaerobic Respiration (3) Exothermic Reaction (4) Transpiration

Last Answer : (2) Anaerobic Respiration Explanation: Fermentation in food processing is the process of converting carbohydrates to alcohol or organic acids using microorganisms—yeasts or bacteria—under anaerobic conditions. It also occurs in oxygenstarved muscle cells, as in the case of lactic acid fermentation.

Production of alcohol from organic compounds by microorganisms is known as (1) Combustion (2) Fermentation (3) Anaerobic: respiration (4) Aerobic respiration

Description : Production of alcohol from organic compounds by microorganisms is known as (1) Combustion (2) Fermentation (3) Anaerobic: respiration (4) Aerobic respiration

Last Answer : (3) Anaerobic: respiration Explanation: The process of breaking down large molecules into simpler one in the presence of enzyme is called fermentation.

The energy-releasing metabolic process in which substrate is oxidised without an external electron acceptor is called (a) glycolysis (b) fermentation (c) aerobic respiration (d) photorespiration.

Description : The energy-releasing metabolic process in which substrate is oxidised without an external electron acceptor is called (a) glycolysis (b) fermentation (c) aerobic respiration (d) photorespiration.

Last Answer : (b) fermentation

In which one of the following processes CO2 is not released? (a) Aerobic respiration in plants(b) Aerobic respiration in animals (c) Alcoholic fermentation (d) Lactate fermentation

Description : In which one of the following processes CO2 is not released? (a) Aerobic respiration in plants (b) Aerobic respiration in animals (c) Alcoholic fermentation (d) Lactate fermentation

Last Answer : (d) Lactate fermentation

Which two distinct microbial processes are responsible for the release of fixed nitrogen as dinitrogen gas (N2) to the atmosphere? (a) Aerobic nitrate oxidation and nitrite reduction (b) Decomposition of organic nitrogen and conversion of dinitrogen to ammonium compounds (c) Enteric fermentation in cattle and nitrogen fixation by Rhizobium in root nodules of legumes (d) Anaerobic ammonium oxidation and denitrification

Description : Which two distinct microbial processes are responsible for the release of fixed nitrogen as dinitrogen gas (N2) to the atmosphere? (a) Aerobic nitrate oxidation and nitrite reduction (b) ... fixation by Rhizobium in root nodules of legumes (d) Anaerobic ammonium oxidation and denitrification

Last Answer : (d) Anaerobic ammonium oxidation and denitrification

If cells can use oxygen in cellular respiration it is called _____. a. Anaerobic Respiration b. Alcoholic Fermentation c. Acid Fermentation d. Aerobic Respiration

Description : If cells can use oxygen in cellular respiration it is called _____. a. Anaerobic Respiration b. Alcoholic Fermentation c. Acid Fermentation d. Aerobic Respiration

Last Answer : c. Acid Fermentation

The use of oxygen gas (02) in an exergonic pathway generating ATP is called a. Anaerobic Respiration. b. Photosynthesis. c. Aerobic Respiration. d. Fermentation.

Description : The use of oxygen gas (02) in an exergonic pathway generating ATP is called a. Anaerobic Respiration. b. Photosynthesis. c. Aerobic Respiration. d. Fermentation.

Last Answer : c. Aerobic Respiration.

Fermentation is a type of ________ process . (1) Aerobic Respiration (2) Anaerobic Respiration (3) Exothermic Reaction (4) Transpiration

Description : Fermentation is a type of ________ process . (1) Aerobic Respiration (2) Anaerobic Respiration (3) Exothermic Reaction (4) Transpiration

Last Answer : Exothermic respiration

Production of alcohol from organic compounds by microorganisms is known as (1) Combustion (2) Fermentation (3) Anaerobic respiration (4) Aerobic respiration

Description : Production of alcohol from organic compounds by microorganisms is known as (1) Combustion (2) Fermentation (3) Anaerobic respiration (4) Aerobic respiration

Last Answer : Fermentation

Prilling of urea should be accomplished (in a sprayer) just above the melting point of urea with minimum of retention time, otherwise it will result in (A) Low bulk density product (B) Biuret formation (C) Non-spherical prills (D) Substantially wet non-flowing and sticky product

Description : Prilling of urea should be accomplished (in a sprayer) just above the melting point of urea with minimum of retention time, otherwise it will result in (A) Low bulk density product (B) Biuret formation (C) Non-spherical prills (D) Substantially wet non-flowing and sticky product

Last Answer : (B) Biuret formation

Acetone is to be removed from air in an isothermal dilute absorber using pure water as solvent. The incoming air contains 5 mole% of acetone (yin = 0.05). The design equation to be used for obtaining the number of trays (N) of the absorber is, N+2 = 6 log (yin /yout ).For 98% recovery of acetone, the number of trays required is/are: (A) 4 (B) 8 (C) 9 (D) 10

Description : Acetone is to be removed from air in an isothermal dilute absorber using pure water as solvent. The incoming air contains 5 mole% of acetone (yin = 0.05). The design equation to be used for obtaining the number of trays ( ... of acetone, the number of trays required is/are: (A) 4 (B) 8 (C) 9 (D) 10

Last Answer : (C) 9

Nitrogen 1. Is non-essential for the animal bodies 2. In air dilutes oxygen which, otherwise, is very active in the pure form 3. Makes oxygen soluble in blood 4. Is present in DNA and RNA The correct statements are: (a) 1 and 4 only (b) 2 and 4 only (c) 3 and 4 only (d) 1 and 2 only

Description : Nitrogen 1. Is non-essential for the animal bodies 2. In air dilutes oxygen which, otherwise, is very active in the pure form 3. Makes oxygen soluble in blood 4. Is present in DNA and RNA The correct statements are: (a) 1 and 4 only (b) 2 and 4 only (c) 3 and 4 only (d) 1 and 2 only

Last Answer : Ans:(b)

The maximum concentration of ethanol that is achieved by successive distillation of fermentation broth in continuous stills is A- .60% B- 95% C- .70% D- 99%

Description : The maximum concentration of ethanol that is achieved by successive distillation of fermentation broth in continuous stills is A- .60% B- 95% C- .70% D- 99%

Last Answer : 95%

Cefotaxime has the following properties except (a) It is highly active against aerobic gram negative bacteria (b) It is the most active cephalosporin against Pseudomonas aeruginosa (c) It produces an active metabolite (d) It has achieved high cure rates in serious hospital acquired infections

Description : Cefotaxime has the following properties except (a) It is highly active against aerobic gram negative bacteria (b) It is the most active cephalosporin against Pseudomonas aeruginosa (c) It produces an active metabolite (d) It has achieved high cure rates in serious hospital acquired infections

Last Answer : Ans: B

Cefotaxime has the following properties except: A. It is highly active against aerobic gram negative bacteria B. It is the most active cephalosporin against Pseudomonas aeruginosa C. It produces an active metabolite D. It has achieved high cure rates in serious hospital acquired infections

Description : Cefotaxime has the following properties except: A. It is highly active against aerobic gram negative bacteria B. It is the most active cephalosporin against Pseudomonas aeruginosa C. It produces an active metabolite D. It has achieved high cure rates in serious hospital acquired infections

Last Answer : B. It is the most active cephalosporin against Pseudomonas aeruginosa

Economics cannot be given the status of science because (a) Of non-uniformity of opinion and approach of economist; (b) Economic behaviour of human being is unpredictable; (c) Measuring rod of money is unstable ; (d) All the three

Description : Economics cannot be given the status of science because (a) Of non-uniformity of opinion and approach of economist; (b) Economic behaviour of human being is unpredictable; (c) Measuring rod of money is unstable ; (d) All the three

Last Answer : (d) All the three

In closed circuit grinding as compared to open circuit grinding, the (A) Specific surface of product is more (B) Product has lesser size uniformity (C) Production rate at a given limiting size is lower (D) Operation is economical

Description : In closed circuit grinding as compared to open circuit grinding, the (A) Specific surface of product is more (B) Product has lesser size uniformity (C) Production rate at a given limiting size is lower (D) Operation is economical

Last Answer : (D) Operation is economical

Dried finished product sampled from various parts of a __________ dryer exhibits non-uniformity in the moisture content. (A) Rotary (B) Tray (C) Freeze (D) None of these

Description : Dried finished product sampled from various parts of a __________ dryer exhibits non-uniformity in the moisture content. (A) Rotary (B) Tray (C) Freeze (D) None of these

Last Answer : (B) Tray

Sometimes, batch process is preferred over continuous process, when the product (A) Quality & yield cannot be achieved in continuous processes, because of long residence time (B) Sales demand is fluctuating (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Sometimes, batch process is preferred over continuous process, when the product (A) Quality & yield cannot be achieved in continuous processes, because of long residence time (B) Sales demand is fluctuating (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

Batch process is preferred over continuous process, when the (A) Product yields and quality cannot be achieved in continuous process, because of long residence time (B) Sales demand of product is not steady (C) Same equipment cannot be used for several processes of the same nature (D) All (A), (B) & (C)

Description : Batch process is preferred over continuous process, when the (A) Product yields and quality cannot be achieved in continuous process, because of long residence time (B) Sales demand of product is not steady (C) Same ... be used for several processes of the same nature (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

Batch process is preferred over continuous process, when the (A) Product yields and quality cannot be achieved in continuous process, because of long residence time (B) Sales demand of product is not steady (C) Same equipment cannot be used for several processes of the same nature (D) All (A), (B) & (C)

Description : Batch process is preferred over continuous process, when the (A) Product yields and quality cannot be achieved in continuous process, because of long residence time (B) Sales demand of product is not steady (C) Same ... cannot be used for several processes of the same nature (D) All (A), (B) & (C)

Last Answer : (B) Sales demand of product is not steady

Which of the following material is sterilized by heating at 160°C in a hot air oven for one hour? A.Swab sticks B.All-glass syringes C.Oils and jellies D.All of these

Description : Which of the following material is sterilized by heating at 160°C in a hot air oven for one hour? A.Swab sticks B.All-glass syringes C.Oils and jellies D.All of these

Last Answer : D.All of these

Fuel economy in an industrial furnace operation cannot be achieved by the use of (A) Stoichiometric combustion air (B) Non-preheated combustion air (C) Combustion air not enriched with oxygen (D) Recuperators

Description : Fuel economy in an industrial furnace operation cannot be achieved by the use of (A) Stoichiometric combustion air (B) Non-preheated combustion air (C) Combustion air not enriched with oxygen (D) Recuperators

Last Answer : (A) Stoichiometric combustion air

Higher furnace temperature cannot be achieved by use of a lean fuel gas in the furnace by (A) Increasing the draft in the furnace (B) Preheating the fuel gas (C) Oxygen enrichment of combustion air (D) Preheating the combustion air

Description : Higher furnace temperature cannot be achieved by use of a lean fuel gas in the furnace by (A) Increasing the draft in the furnace (B) Preheating the fuel gas (C) Oxygen enrichment of combustion air (D) Preheating the combustion air

Last Answer : (A) Increasing the draft in the furnace

Higher efficiency in the combustion of solid fuel cannot be achieved by (A) Proper fuel preparation (B) Keeping the flue gas exhaust temperature very high (C) Adopting efficient-fuel firing technique & equipment (D) Supplying correct quantity of combustion air

Description : Higher efficiency in the combustion of solid fuel cannot be achieved by (A) Proper fuel preparation (B) Keeping the flue gas exhaust temperature very high (C) Adopting efficient-fuel firing technique & equipment (D) Supplying correct quantity of combustion air

Last Answer : (B) Keeping the flue gas exhaust temperature very high

Higher fuel combustion efficiency cannot be achieved by (A) Preheating of fuel gases & combustion air (B) Reducing sulphur content in the fuel (C) Adopting proper fuel firing technique & fuel preparation (D) Supplying correct amount of combustion air

Description : Higher fuel combustion efficiency cannot be achieved by (A) Preheating of fuel gases & combustion air (B) Reducing sulphur content in the fuel (C) Adopting proper fuel firing technique & fuel preparation (D) Supplying correct amount of combustion air

Last Answer : (B) Reducing sulphur content in the fuel

Pebble mills are tumbling mills widely used for grinding in the manufacture of paints & pigments and cosmetic industries, where iron contamination in the product is highly objectionable. Pebbles used in pebble mill are made of (A) Bronze (B) Stainless steel (C) Flint or porcelain (D) Concrete

Description : Pebble mills are tumbling mills widely used for grinding in the manufacture of paints & pigments and cosmetic industries, where iron contamination in the product is highly objectionable. Pebbles used in pebble mill are made of (A) Bronze (B) Stainless steel (C) Flint or porcelain (D) Concrete

Last Answer : (C) Flint or porcelain

Which one of the following is not a part of Koch‘s postulates? a. The microorganism must be isolated from a dead animal and pure cultured b. The microorganism and disease can be identified from a mixed culture c. The pure cultured organism is inoculated into a healthy susceptible animal. d. The same microorganism must be present in every case of the disease.

Description : Which one of the following is not a part of Koch s postulates? a. The microorganism must be isolated from a dead animal and pure cultured b. The microorganism and disease can be identified from ... a healthy susceptible animal. d. The same microorganism must be present in every case of the disease.

Last Answer : d. The same microorganism must be present in every case of the disease.

Food must be moist, with a minimum water content of _____before contamination by microorganisms and spoilage can occur. a. 18% to 20% b. 10 to 15% c. 5 to 10% d. 0 to 5%

Description : Food must be moist, with a minimum water content of _____before contamination by microorganisms and spoilage can occur. a. 18% to 20% b. 10 to 15% c. 5 to 10% d. 0 to 5%

Last Answer : a. 18% to 20%

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.

Pick up the incorrect statement from the following. While performing preliminary test on concrete (A) Proportions of the material and water should be the same as to be used at the work site (B) Cement should be mixed by hand in order to maintain uniformity (C) Concrete mix should be stored in air-tight containers (D) Concrete ingredients should be kept at a temperature of 37° ± 2°C

Description : Pick up the incorrect statement from the following. While performing preliminary test on concrete (A) Proportions of the material and water should be the same as to be used at the work site (B) ... in air-tight containers (D) Concrete ingredients should be kept at a temperature of 37° 2°C

Last Answer : Answer: Option D

Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result in (A) Pyrolysis of oil(B) Sintering of porous catalyst(C) Hydrogen embrittlement(D) All (A), (B) and (C)

Description : Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result in (A) Pyrolysis of oil (B) Sintering of porous catalyst (C) Hydrogen embrittlement (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

A 67-year-old male presents with an intraabdominal abscess secondary to perforated sigmoid diverticulitis. The following statement(s) is/are true concerning his intraabdominal abscess. a. Culture will likely reveal a solitary organism b. Both aerobic and anaerobic islets are encountered in 50% of specimens c. The most common aerobic islet will be likely E. coli and other gram-negative enteric bacilli d. The most common anaerobic islet will be a Bacteroides species

Description : A 67-year-old male presents with an intraabdominal abscess secondary to perforated sigmoid diverticulitis. The following statement(s) is/are true concerning his intraabdominal abscess. a. Culture will ... gram-negative enteric bacilli d. The most common anaerobic islet will be a Bacteroides species

Last Answer : Answer: b, c, d Typically an intraabdominal infection results in perforation of a hollow viscus and the ensuing contamination of a normally sterile peritoneal cavity. The normal ... Bacteroides species (especially B. fragilis, Clostridium), and anaerobic cocci are most consistently isolated

. It is desired to bring about a certain change in the state of a system by performing work on the system under adiabatic conditions. (A) The amount of work needed is path dependent (B) Work alone cannot bring out such a change of state (C) The amount of work needed is independent of path (D) More information is needed to conclude anything about the path dependence or otherwise of the work needed

Description : . It is desired to bring about a certain change in the state of a system by performing work on the system under adiabatic conditions. (A) The amount of work needed is path dependent (B) ... (D) More information is needed to conclude anything about the path dependence or otherwise of the work needed

Last Answer : (A) The amount of work needed is path dependent

Should some people be forced to be sterilized? (Details )

Description : Should some people be forced to be sterilized? (Details )

Last Answer : answer:Quick YES But the devil is in the details. The problem is: who decides? If you start castrating people for one sort of behavior, where do you stop? Trumpites will want to sterilize ... unpopular or unsympathetic sub-group within the country. Read up on nazi germany. They tried it there.

Is it safe to use some one's used tapers and jewelry if it is properly sterilized?

Description : Is it safe to use some one's used tapers and jewelry if it is properly sterilized?

Last Answer : Well. You’re asking “if it is properly sterilized.” Anything is reusable if properly sterilized. But I wouldn’t apply that to heroine needles to be on the safe side.