Agar is used for solidifying culture media because A-it does not affect by the growth of bacteria B-it does not add to the nutritive properties of the medium C-the melting and solidifying points of agar solution are not the same D-all of the above

Agar is used for solidifying culture media because
A-it does not affect by the growth of bacteria
B-it does not add to the nutritive properties of the medium
C-the melting and solidifying points of agar solution are not the same
D-all of the above
by

1 Answer

Answer :

all of the above
by

Related questions

The solidifying agent commonly used in preparation of media is/are A-agar B-silica gel C-both (a) and (b) D-none of these

Description : The solidifying agent commonly used in preparation of media is/are A-agar B-silica gel C-both (a) and (b) D-none of these

Last Answer : both (a) and (b)

What is the Solidifying temp and melting temp of agar?

Description : What is the Solidifying temp and melting temp of agar?

Last Answer : Need answer

Selective media facilitate growth of only one kind of organism.Saboraud medium is used to selectively isolate A- coliform bacteria B- gram positive bacteria C- .yeasts D- acid fast organisms

Description : Selective media facilitate growth of only one kind of organism.Saboraud medium is used to selectively isolate A- coliform bacteria B- gram positive bacteria C- .yeasts D- acid fast organisms

Last Answer : .yeasts

Mark the INCORRECT statement about agar, a gelling agent in plant tissue culture medium a. Not digested by plant enzymes b. It does not use in micro-propagation work c. It does not react with media constituents d. Remain stable at incubation temperature

Description : Mark the INCORRECT statement about agar, a gelling agent in plant tissue culture medium a. Not digested by plant enzymes b. It does not use in micro-propagation work c. It does not react with media constituents d. Remain stable at incubation temperature

Last Answer : b. It does not use in micro-propagation work

Viruses can be grown on _____. a. nutrient agar b. nutrient broth c. blood agar d. tissue culture

Description : Viruses can be grown on _____. a. nutrient agar b. nutrient broth c. blood agar d. tissue culture

Last Answer : d. tissue culture

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.

The concentration of agar to obtain semi solid media is A- 1.5-20%B- 0.5% or less C- >10% D- 10%but<20%

Description : The concentration of agar to obtain semi solid media is A- 1.5-20%B- 0.5% or less C- >10% D- 10%but

Last Answer : 0.5% or less

.Bacteria having no flagella are unable to A- move B- reproduce C- stick to tissue surfaces D- grow in nutrient agar

Description : .Bacteria having no flagella are unable to A- move B- reproduce C- stick to tissue surfaces D- grow in nutrient agar

Last Answer : move

Name the gelatin-like substance which is prepared fro various species of red algae growing in Asiatic waters. The prepared product appears in the form of cakes, coarse granules, long shreds or in thin sheets. It is used extensively alone or in combination with various nutritive substances, as a medium for culturing bacteria and various fungi

Description :  Name the gelatin-like substance which is prepared fro various species of red algae growing in Asiatic waters. The prepared product appears in the form of cakes, coarse granules, long ... or in combination with various nutritive substances, as a medium for culturing bacteria and various fungi  

Last Answer : ANSWER: Agar-agar or just Agar

When a substance is added to a liquid medium which inhibits the growth of unwanted bacteriaand favors the growth of wanted bacteria, it is known as A- differential medium B- enriched medium C- enrichment medium D-selective medium

Description : When a substance is added to a liquid medium which inhibits the growth of unwanted bacteriaand favors the growth of wanted bacteria, it is known as A- differential medium B- enriched medium C- enrichment medium D-selective medium

Last Answer : enrichment medium

A paper disc or small cylinder containing antibiotic is used in the antibiotic sensitivity assay known as the a. Tube dilution method. b. Immunodiffusion method. c. Agar diffusion method. d. Passive detection method.

Description : A paper disc or small cylinder containing antibiotic is used in the antibiotic sensitivity assay known as the a. Tube dilution method. b. Immunodiffusion method. c. Agar diffusion method. d. Passive detection method.

Last Answer : c. Agar diffusion method.

The is used to determine an antibiotic‘s minimal inhibitory concentration (NEC). a. Ames test b. tube dilution method c. agar disk diffusion method d. Kirby-Bauer test

Description : The is used to determine an antibiotic‘s minimal inhibitory concentration (NEC). a. Ames test b. tube dilution method c. agar disk diffusion method d. Kirby-Bauer test

Last Answer : b. tube dilution method

Exponential phase of growth curve of bacteria is of limited duration because of A.rise in cell density B.accumulation of toxic metabolites C.exhaustion of nutrients D.all of these

Description : Exponential phase of growth curve of bacteria is of limited duration because of A.rise in cell density B.accumulation of toxic metabolites C.exhaustion of nutrients D.all of these

Last Answer : D.all of these

Exponential phase of growth curve of bacteria is of limited duration because of A.rise in cell density B.accumulation of toxic metabolites C.exhaustion of nutrients D.all of these

Description : Exponential phase of growth curve of bacteria is of limited duration because of A.rise in cell density B.accumulation of toxic metabolites C.exhaustion of nutrients D.all of these

Last Answer : D.all of these

A disease producing species occurring in a mixed culture can often be selected on the basisofits A- pathogenic properties B- special carbon source C- special nitrogen source D-.none of these

Description : A disease producing species occurring in a mixed culture can often be selected on the basisofits A- pathogenic properties B- special carbon source C- special nitrogen source D-.none of these

Last Answer : pathogenic properties

or the selection of endospore-forming bacteria, a mixed culture can be heated at A- 80°C for 10 minutes B- 70°C for 10 minutes C- 60°C for 10 minutes D- 90°C for 10 minutes

Description : or the selection of endospore-forming bacteria, a mixed culture can be heated at A- 80°C for 10 minutes B- 70°C for 10 minutes C- 60°C for 10 minutes D- 90°C for 10 minutes

Last Answer : 80°C for 10 minutes

n lysogeny, A- a bacteriophage transfers bacterial DNA B- bacteria take up double stranded DNA from the environment C- DNA-degrading enzymes in the extracellular medium would stop the process D- a bacteriophage genome is integrated into the bacterial genome

Description : n lysogeny, A- a bacteriophage transfers bacterial DNA B- bacteria take up double stranded DNA from the environment C- DNA-degrading enzymes in the extracellular medium would stop the process D- a bacteriophage genome is integrated into the bacterial genome

Last Answer : a bacteriophage genome is integrated into the bacterial genome

A medium containing crystal violet dye plus sodium deoxycholate will allow A- gram (-)ve intestinal bacteria to grow B- gram (+)ve intestinal bacteria to grow C- .aquatic bacteria to grow D- none of these

Description : A medium containing crystal violet dye plus sodium deoxycholate will allow A- gram (-)ve intestinal bacteria to grow B- gram (+)ve intestinal bacteria to grow C- .aquatic bacteria to grow D- none of these

Last Answer : gram (-)ve intestinal bacteria to grow

A medium would involve the addition of the antibiotic methicillin to identify methicillin-resistant bacteria. a. differential b. selective c. thioglycollate d. VBNC

Description : A medium would involve the addition of the antibiotic methicillin to identify methicillin-resistant bacteria. a. differential b. selective c. thioglycollate d. VBNC

Last Answer : b. selective

Starvation proteins are produced by a culture during which of the following segments of the growth curve? A - Lag phase B- Exponential phase C- Stationary phase D- Death phase

Description : Starvation proteins are produced by a culture during which of the following segments of the growth curve? A - Lag phase B- Exponential phase C- Stationary phase D- Death phase

Last Answer : Stationary phase

The medium which allows the growth of more than one microorganisms of interest but with morphologically distinguishable colonies is known as A- selective medium B- enrichment medium C- differential medium D- none of these

Description : The medium which allows the growth of more than one microorganisms of interest but with morphologically distinguishable colonies is known as A- selective medium B- enrichment medium C- differential medium D- none of these

Last Answer : differential medium

What is a medium that contains ingredients that inhibit the growth of some organisms while allowing the growth of others? a. Differential b. General purpose c. Enriched d. Selective e. All the above

Description : What is a medium that contains ingredients that inhibit the growth of some organisms while allowing the growth of others? a. Differential b. General purpose c. Enriched d. Selective e. All the above

Last Answer : d. Selective

If the carbon source in a growth medium is beef extract, the medium must be an example of a/an medium. a. complex b. chemically defined c. enriched d. synthetic

Description : If the carbon source in a growth medium is beef extract, the medium must be an example of a/an medium. a. complex b. chemically defined c. enriched d. synthetic

Last Answer : a. complex

Do all bacteria require oxygen for growth?

Description : Do all bacteria require oxygen for growth?

Last Answer : Many bacteria are aerobic; that is, they require oxygen to grow and perform the biochemical reactions of their metabolism. There are, however, a large number of bacterial species that are ... obligate anaerobes, while others are facultative anaerobes, meaning that they live with or without oxygen. 

Which of the following (s) is/are the major spoilage of soft drinks from the marked growth of yeasts and bacteria? A.Cloudiness and ropiness B.Flat sour spoilage C.Superficial fungal spoilage D.Pin-spot molding

Description : Which of the following (s) is/are the major spoilage of soft drinks from the marked growth of yeasts and bacteria? A.Cloudiness and ropiness B.Flat sour spoilage C.Superficial fungal spoilage D.Pin-spot molding

Last Answer : A.Cloudiness and ropiness

Which of the following (s) is/are the major spoilage of soft drinks from the marked growth of yeasts and bacteria? A.Cloudiness and ropiness B.Flat sour spoilage C.Superficial fungal spoilage D.Pin-spot molding

Description : Which of the following (s) is/are the major spoilage of soft drinks from the marked growth of yeasts and bacteria? A.Cloudiness and ropiness B.Flat sour spoilage C.Superficial fungal spoilage D.Pin-spot molding

Last Answer : Cloudiness and ropiness

For most bacteria, the optimum pH for growth lies between A- .6.5-7.5 B- B.3.5-4.5 C-.4.5-5.5 D-.5.5-6.5

Description : For most bacteria, the optimum pH for growth lies between A- .6.5-7.5 B- B.3.5-4.5 C-.4.5-5.5 D-.5.5-6.5

Last Answer : 6.5-7.5

Bacteria are most sensitive to antibiotics at which phase of growth curve A Lag phase B Log Phase C Stationary phase D Phase of Decline

Description : Bacteria are most sensitive to antibiotics at which phase of growth curve A Lag phase B Log Phase C Stationary phase D Phase of Decline

Last Answer : B Log Phase

Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their (a) nutritive value (b) growth response (c) defence action (d) effect on reproduction

Description : Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their (a) nutritive value (b) growth response (c) defence action (d) effect on reproduction

Last Answer : (c) defence action

If a person wants to obtain agar for tissue culture, which plant group he should search?

Description : If a person wants to obtain agar for tissue culture, which plant group he should search?

Last Answer : If a person wants to obtain agar for tissue culture, which plant group he should search?

Why is blood agar useful as a primary isolation medium?

Description : Why is blood agar useful as a primary isolation medium?

Last Answer : What is the answer ?

Example of anaerobic medium a. Wilson blair medium b. Mac conkey broth c. Robertson’s cooked meat medium d. EMB agar

Description : Example of anaerobic medium a. Wilson blair medium b. Mac conkey broth c. Robertson’s cooked meat medium d. EMB agar

Last Answer : Ans: C

Which of the following chemotherapeutic agents may affect the growth of Campylobacter jejuni? A- .Vacomycin B- Polymyxin C- Trimethoprim D- None of these

Description : Which of the following chemotherapeutic agents may affect the growth of Campylobacter jejuni? A- .Vacomycin B- Polymyxin C- Trimethoprim D- None of these

Last Answer : None of these

Which of the following chemotherapeutic agents may affect the growth of Campylobacterjejuni? A- VacomycinB- Polymyxin C- Trimethoprim D- .None of these

Description : Which of the following chemotherapeutic agents may affect the growth of Campylobacterjejuni? A- Vacomycin B- Polymyxin C- Trimethoprim D- .None of these

Last Answer : .None of these

Why would bacteria not grow on an agar plate treated with a disinfectant?

Description : Why would bacteria not grow on an agar plate treated with a disinfectant?

Last Answer : What is the answer ?

Agar – Agar is obtained from – (a) Fungi (b) Algae (c) Moss (d) Bacteria

Description : Agar – Agar is obtained from – (a) Fungi (b) Algae (c) Moss (d) Bacteria

Last Answer : (b) Algae 

Pick out the wrong statement pertaining to the properties of glasses. Glasses generally have (A) High electrical insulation properties (B) Sharp melting points (C) Low co-efficient of thermal expansion (D) Compressive strength much greater than their tensile strengths

Description : Pick out the wrong statement pertaining to the properties of glasses. Glasses generally have (A) High electrical insulation properties (B) Sharp melting points (C) Low co-efficient of thermal expansion (D) Compressive strength much greater than their tensile strengths

Last Answer : (B) Sharp melting points

Why the bacterium Treponemapallidum is difficult to culture? A-.Because it requires a great deal of water to reproduce B- .Because it is unable to use carbohydrates as an energy source C- Because it lacks the genes needed for TCA cycle and oxidative phosphorylation D- Because it requires extremely low temperature at which water freezes

Description : Why the bacterium Treponemapallidum is difficult to culture? A-.Because it requires a great deal of water to reproduce B- .Because it is unable to use carbohydrates as an energy source ... TCA cycle and oxidative phosphorylation D- Because it requires extremely low temperature at which water freezes

Last Answer : Because it lacks the genes needed for TCA cycle and oxidative phosphorylation

Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when pla(a) It made possible the isolation and exact identification of auxin. (b) It is the basis for quantitative determination of small amounts of growth-promoting substances. (c) It supports the hypothesis that IAA is auxin. (d) It demonstrated polar movement of auxinsced on one side of freshly-cut coleoptile stumps. Of what significance is this experiment?

Description : Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly-cut coleoptile stumps. Of what ... . (c) It supports the hypothesis that IAA is auxin. (d) It demonstrated polar movement of auxins

Last Answer : (a) It made possible the isolation and exact identification of auxin.

The bacterium Deinococcus radiodurans has been of interest to molecular biologists because a. it has the smallest known bacterial genome. b. it is a "living fossil" linking the Bacteria and Archaea. c. it has the largest known bacterial genome. d. it is very resistant to radiation damage.

Description : The bacterium Deinococcus radiodurans has been of interest to molecular biologists because a. it has the smallest known bacterial genome. b. it is a "living fossil" linking the Bacteria and Archaea. c. it has the largest known bacterial genome. d. it is very resistant to radiation damage.

Last Answer : d. it is very resistant to radiation damage.

dB is a standard abbreviation used for the quantitative expression of (a) the density of bacteria in a medium (b) a particular pollutant (c) the dominant Bacillus in a culture (d) a certain pesticide.

Description : dB is a standard abbreviation used for the quantitative expression of (a) the density of bacteria in a medium (b) a particular pollutant (c) the dominant Bacillus in a culture (d) a certain pesticide.

Last Answer : (b) a particular pollutant

What is the gelatinous substance produced by red algae which is used as a culture medium for bacteria called?

Description : What is the gelatinous substance produced by red algae which is used as a culture medium for bacteria called?

Last Answer : ANSWER: AGAR (pron: OG-er) or AGAR-AGAR (pron: OG-er-OG-er) 

You are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots? (a) IAA and gibberellin (b) Auxin and cytokinin (c) Auxin and abscisic acid (d) Gibberellin and abscisic acid

Description : You are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots? ... gibberellin (b) Auxin and cytokinin (c) Auxin and abscisic acid (d) Gibberellin and abscisic acid

Last Answer : (b) Auxin and cytokinin

People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude to 5400 metres have around 8 million. This is because at high altitude (a) people eat more nutritive food, therefore more RBCs are formed (b) people get pollution-free air to breath and more oxygen is available (c) atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to survive (d) there is more UV radiation which enhances RBC production.

Description : People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude to 5400 metres have around 8 million. This is because at high altitude ... required amount of O2 to survive (d) there is more UV radiation which enhances RBC production.

Last Answer : (c) atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to survive

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.

Where would you expect lava solidifying into basalt?

Description : Where would you expect lava solidifying into basalt?

Last Answer : Need answer

In regard to indirect compared to direct wax technique, what characteristics must the wax have:** A. Low temperature solidifying point B. Hard in room temperature C. Higher flow in room temperature

Description : In regard to indirect compared to direct wax technique, what characteristics must the wax have:** A. Low temperature solidifying point B. Hard in room temperature C. Higher flow in room temperature

Last Answer : B. Hard in room temperature

The contraction of gold alloys on solidifying is approximately: A. 0.5% B. 2.5% C. 1.40% D. 3%

Description : The contraction of gold alloys on solidifying is approximately: A. 0.5% B. 2.5% C. 1.40% D. 3%

Last Answer : C. 1.40%

Isozymes or iso enzymes are those enzyme which A- have same structural forms B- have different structural forms but identical catalytic properties C- catalyses oxidation reactionsD- none of these

Description : Isozymes or iso enzymes are those enzyme which A- have same structural forms B- have different structural forms but identical catalytic properties C- catalyses oxidation reactions D- none of these

Last Answer : have different structural forms but identical catalytic properties

Isozymes or iso enzymes are those enzyme which A- have same structural forms B- have different structural forms but identical catalytic properties C- catalyses oxidation reactions D- none of these

Description : Isozymes or iso enzymes are those enzyme which A- have same structural forms B- have different structural forms but identical catalytic properties C- catalyses oxidation reactions D- none of these

Last Answer : have different structural forms but identical catalytic properties