One indirect way to determine microbial growth is using a _____. a. UV light b. Spectrophotometer c. Light meter d. Radioactive counter

One indirect way to determine microbial growth is using a _____.
a. UV light
b. Spectrophotometer
c. Light meter
d. Radioactive counter
by

1 Answer

Answer :

b. Spectrophotometer
by

Related questions

With respect to calibration of uv-vis spectrophotometer, which of the following material is used to evaluate the ‘control of absorbance’ A. Sodium thiosulphate B. Potassium dichromate C. Holmium oxide D. Potassium permanganate

Description : With respect to calibration of uv-vis spectrophotometer, which of the following material is used to evaluate the ‘control of absorbance’ A. Sodium thiosulphate B. Potassium dichromate C. Holmium oxide D. Potassium permanganate

Last Answer : B. Potassium dichromate

Some scientists‘ estimate that in nature, _____ of all microbial activities occur in biofilms.a. 0.25 b. 0.33 c. 0.45 d. 0.6 e. 0.99

Description : Some scientists‘ estimate that in nature, _____ of all microbial activities occur in biofilms. a. 0.25 b. 0.33 c. 0.45 d. 0.6 e. 0.99

Last Answer : e. 0.99

What needs to come into consideration when using UV light to sterilize? a. It Needs Direct Exposure b. It Can Cause Skin Cancer c. It May Not Be Effective Against All Kinds Of Endospores d. A-C Are Correct

Description : What needs to come into consideration when using UV light to sterilize? a. It Needs Direct Exposure b. It Can Cause Skin Cancer c. It May Not Be Effective Against All Kinds Of Endospores d. A-C Are Correct

Last Answer : d. A-C Are Correct

Which of the following is NOT a carcinogen? a. Genetic factors b. UV light c. Certain chemicals d. X rays

Description : Which of the following is NOT a carcinogen? a. Genetic factors b. UV light c. Certain chemicals d. X rays

Last Answer : a. Genetic factors

Which of the following are examples of mutagens? a. detergent b. UV light c. fertilizer d. none of the above are correct

Description : Which of the following are examples of mutagens? a. detergent b. UV light c. fertilizer d. none of the above are correct

Last Answer : b. UV light

Excision repair would correct DNA damage caused by a. Antibiotics. b. UV Light. c. A Chemical Mutagen. d. A Dna Replication Error.

Description : Excision repair would correct DNA damage caused by a. Antibiotics. b. UV Light. c. A Chemical Mutagen. d. A Dna Replication Error.

Last Answer : b. UV Light.

: _____ methods of disease transmission include fomites and _____. a. Indirect; kissing b. Indirect; arthropods c. Direct; kissing d. Direct; arthropods

Description : : _____ methods of disease transmission include fomites and _____. a. Indirect; kissing b. Indirect; arthropods c. Direct; kissing d. Direct; arthropods

Last Answer : b. Indirect; arthropods

The growth of bacteria is measured by (1) hemacytometer (2) spectrophotometer (3) calorimeter (4) auxanometer

Description : The growth of bacteria is measured by (1) hemacytometer (2) spectrophotometer (3) calorimeter (4) auxanometer

Last Answer : spectrophotometer

Why is microbial control necessary and what are some of the factors that go into the choice of a particular antimicrobial agent?

Description : Why is microbial control necessary and what are some of the factors that go into the choice of a particular antimicrobial agent?

Last Answer : The control of microorganisms is an important way of preventing pathogens from reaching the body.Sterilizing laboratory equipment, hospital supplies, and industrial apparatus helps contain contamination.The choice of a ... , the acidity or alkalinity of the area, and the presence of organic matter. 

______ form the bulk of microbial products of industrial interest. a. primary metabolites b. secondary metabolites c. tertiary metabolites d. quaternary metabolites

Description : ______ form the bulk of microbial products of industrial interest. a. primary metabolites b. secondary metabolites c. tertiary metabolites d. quaternary metabolites

Last Answer : b. secondary metabolites

________ bind to_________ on microbial invaders. a. Toll-like receptors; PAM Ps b. Mast cells; histamine c. Toll-like receptors; complement d. Macrophages; defensins

Description : ________ bind to_________ on microbial invaders. a. Toll-like receptors; PAM Ps b. Mast cells; histamine c. Toll-like receptors; complement d. Macrophages; defensins

Last Answer : a. Toll-like receptors; PAM Ps

________ occurs if a microbial member of the normal microbiota should gain access to sterile tissue. a. Pathogenicity Islands b. Exogenous Infection c. Endogenous Infection d. Polymicrobial Disease

Description : ________ occurs if a microbial member of the normal microbiota should gain access to sterile tissue. a. Pathogenicity Islands b. Exogenous Infection c. Endogenous Infection d. Polymicrobial Disease

Last Answer : c. Endogenous Infection

A new field of _________ has arisen from sequencing, analyzing and comparing microbial genomes. a. PCR b. DNA probes c. microbial genomics d. microarrays

Description : A new field of _________ has arisen from sequencing, analyzing and comparing microbial genomes. a. PCR b. DNA probes c. microbial genomics d. microarrays

Last Answer : c. microbial genomics

Craig Venter‘s sampling of ocean microorganisms is an example of a. Microarrays. b. Horizontal Gene Transfer. c. Microbial Forensics. d. Metagenomics.

Description : Craig Venter‘s sampling of ocean microorganisms is an example of a. Microarrays. b. Horizontal Gene Transfer. c. Microbial Forensics. d. Metagenomics.

Last Answer : d. Metagenomics.

What is the thermal death time? a. The Time Necessary To Kill Bacteria At A Specific Temperature b. The Temperature Necessary To Kill Microbes In A Specific Time c. The Average Amount Of Time To Kill Microbial Cells d. It Is The Same As The Thermal Death Point

Description : What is the thermal death time? a. The Time Necessary To Kill Bacteria At A Specific Temperature b. The Temperature Necessary To Kill Microbes In A Specific Time c. The Average Amount Of Time To Kill Microbial Cells d. It Is The Same As The Thermal Death Point

Last Answer : a. The Time Necessary To Kill Bacteria At A Specific Temperature

Preservation methods such as salting result in the microbial cells. a. Loss Of Salt From b. Gain Of Water Into c. Loss Of Water From d. Lysis Of

Description : Preservation methods such as salting result in the microbial cells. a. Loss Of Salt From b. Gain Of Water Into c. Loss Of Water From d. Lysis Of

Last Answer : c. Loss Of Water From

The thermal death time is a. The Time To Kill A Microbial Population At A Given Temperature. b. The Time To Kill A Microbial Population In Boiling Water. c. The Temperature To Kill All Pathogens. d. The Minimal Temperature Need To Kill A Microbial Population.

Description : The thermal death time is a. The Time To Kill A Microbial Population At A Given Temperature. b. The Time To Kill A Microbial Population In Boiling Water. c. The Temperature To Kill All Pathogens. d. The Minimal Temperature Need To Kill A Microbial Population.

Last Answer : a. The Time To Kill A Microbial Population At A Given Temperature.

All the following terms apply to microbial killing except: a. Sterilization. b. Microbicidal. c. Bactericidal. d. Fungistatic.

Description : All the following terms apply to microbial killing except: a. Sterilization. b. Microbicidal. c. Bactericidal. d. Fungistatic.

Last Answer : d. Fungistatic

Which one of the following macromolecules would NOT normally be used for microbial energy metabolism. a. DNA b. Proteins c. Carbohydrates d. Fats

Description : Which one of the following macromolecules would NOT normally be used for microbial energy metabolism. a. DNA b. Proteins c. Carbohydrates d. Fats

Last Answer : b. Proteins

Which of the following disease is not caused by microbial protein toxin? A.Botulism B.Diphtheria C.Shigella dysentery D.Tuberculosis

Description : Which of the following disease is not caused by microbial protein toxin? A.Botulism B.Diphtheria C.Shigella dysentery D.Tuberculosis

Last Answer : D.Tuberculosis

The microbial ecosystem of soil includes A.biotic components of soil B.abiotic components of soil C.biotic and abiotic components of soil D.none of the above

Description : The microbial ecosystem of soil includes A.biotic components of soil B.abiotic components of soil C.biotic and abiotic components of soil D.none of the above

Last Answer : C.biotic and abiotic components of soil

The microbial ecosystem of soil includes A.biotic components of soil B.abiotic components of soil C.biotic and abiotic components of soil D.none of the above

Description : The microbial ecosystem of soil includes A.biotic components of soil B.abiotic components of soil C.biotic and abiotic components of soil D.none of the above

Last Answer : C.biotic and abiotic components of soil

Microbial rennet, which is used in cheese manufacture is produced by A- .Mucorspp B- Aspergillusspp C- Bacillus spp D- Saccharomyces spp

Description : Microbial rennet, which is used in cheese manufacture is produced by A- .Mucorspp B- Aspergillusspp C- Bacillus spp D- Saccharomyces spp

Last Answer : Aspergillusspp

The flow of genetic material in microbial cells usually takes place from A- RNA through DNA to proteins B- proteins through RNA to DNA C- .DNA through RNA to proteins D- none of these

Description : The flow of genetic material in microbial cells usually takes place from A- RNA through DNA to proteins B- proteins through RNA to DNA C- .DNA through RNA to proteins D- none of these

Last Answer : .DNA through RNA to proteins

Which group of microbial agents is eukaryotic? a. Bacteria b. Viruses c. Archaea d. Algae

Description : Which group of microbial agents is eukaryotic? a. Bacteria b. Viruses c. Archaea d. Algae

Last Answer : d. Algae

What microbiological field was established by Winogradsky and Beijerinck? a. Virology b. Microbial ecology c. Bacteriology d. Mycology

Description : What microbiological field was established by Winogradsky and Beijerinck? a. Virology b. Microbial ecology c. Bacteriology d. Mycology

Last Answer : b. Microbial ecology

What group of microbial agent was identified from the work of Ivanowsky a Beijerinck? a. Viruses b. Fungi c. Protozoa d. Bacteria

Description : What group of microbial agent was identified from the work of Ivanowsky a Beijerinck? a. Viruses b. Fungi c. Protozoa d. Bacteria

Last Answer : a. Viruses

Suitable method of sterilization of powders is - - - - - - - - A Autoclaving B Hot Air Oven C UV radiation D Gaseous

Description : Suitable method of sterilization of powders is - - - - - - - - A Autoclaving B Hot Air Oven C UV radiation D Gaseous

Last Answer : B Hot Air Oven

What part Of the spectrophotometer is responsible for detecting the amount of light absorbed?

Description : What part Of the spectrophotometer is responsible for detecting the amount of light absorbed?

Last Answer : Feel Free to Answer

Cell size and cell number can be measured using A- hemocytometer B- coulter counter C- petroff-hausser counting chamber D- none of these

Description : Cell size and cell number can be measured using A- hemocytometer B- coulter counter C- petroff-hausser counting chamber D- none of these

Last Answer : coulter counter

When the Exxon Valdez oil spill occurred, technologists "fertilized" the oil-soaked water with _____ to modify the environment and stimulate he growth of naturally occurring microorganisms. a. nitrogen sources (e.g., urea) b. phosphorus compounds c. other mineral nutrients d. A-C above are correct

Description : When the Exxon Valdez oil spill occurred, technologists "fertilized" the oil-soaked water with _____ to modify the environment and stimulate he growth of naturally occurring microorganisms. a. nitrogen sources (e.g., urea) b. phosphorus compounds c. other mineral nutrients d. A-C above are correct

Last Answer : d. A-C above are correct

During the stationary phase of bacterial growth, the population of living cells is _____ the population of dying cells. a. greater than b. smaller than c. equal to d. increasing faster than

Description : During the stationary phase of bacterial growth, the population of living cells is _____ the population of dying cells. a. greater than b. smaller than c. equal to d. increasing faster than

Last Answer : c. equal to

Which one of the following is an example of an indirect method of disease transmission? a. Coughing b. Droplet transmission c. A mosquito bite d. An animal bite

Description : Which one of the following is an example of an indirect method of disease transmission? a. Coughing b. Droplet transmission c. A mosquito bite d. An animal bite

Last Answer : c. A mosquito bite

Which of the following theory of antibody production is most widely accepted? A- Side chain theory B- Clonal selection theory C- Direct template theory D- Indirect template theory

Description : Which of the following theory of antibody production is most widely accepted? A- Side chain theory B- Clonal selection theory C- Direct template theory D- Indirect template theory

Last Answer : Clonal selection theory

Why Deinococcusradiodurans is able to survive massive exposure to radiation? A- .Because it produces a thick shell which acts as a shield from the radiation B- Because it has unique DNA repair mechanisms C- Because its cellwall contains radioactive elements D- Because it has many copies of genes encoding DNA repair

Description : Why Deinococcusradiodurans is able to survive massive exposure to radiation? A- .Because it produces a thick shell which acts as a shield from the radiation B- Because it has unique DNA repair ... its cellwall contains radioactive elements D- Because it has many copies of genes encoding DNA repair

Last Answer : Because it has many copies of genes encoding DNA repair

The elements with filled electron shells are called _______ a. Inert Elements. b. Active Elements. c. Radioactive Elements. d. Bonded Electrons.

Description : The elements with filled electron shells are called _______ a. Inert Elements. b. Active Elements. c. Radioactive Elements. d. Bonded Electrons.

Last Answer : d. Bonded Electrons.

one way to get a pure culture is by using _____. a. Aseptic technique b. Pour-plate method c. Streak-plate method d. A and C e. B and C

Description : one way to get a pure culture is by using _____. a. Aseptic technique b. Pour-plate method c. Streak-plate method d. A and C e. B and C

Last Answer : d. A and C

Nitrogen in plant sample is estimated by: a. Refreshrometer b. Kjeldhal’s apparatus c. Spectrophotometer d. All of above

Description : Nitrogen in plant sample is estimated by: a. Refreshrometer b. Kjeldhal’s apparatus c. Spectrophotometer d. All of above

Last Answer : Kjeldhal’s apparatus

Which instrument is used for photographing the Sun? (1) Galvanometer (2) Potentiometer (3) Spectrophotometer (4) Spectroheliograph

Description : Which instrument is used for photographing the Sun? (1) Galvanometer (2) Potentiometer (3) Spectrophotometer (4) Spectroheliograph

Last Answer : Spectroheliograph

Microbial growth slows at temperatures under ____ºF. a. 80 c. 60 b. 70 d. 50

Description : Microbial growth slows at temperatures under ____ºF. a. 80 c. 60 b. 70 d. 50

Last Answer : d. 50

Antibodies contain two identical_____ chains, and two identical _____ chains. a. right, left b. constant, variable c. heavy, light d. Fab, Fc

Description : Antibodies contain two identical_____ chains, and two identical _____ chains. a. right, left b. constant, variable c. heavy, light d. Fab, Fc

Last Answer : c. heavy, light

Organisms that practice heterotrophy are able to synthesize their own food from _____. a. light b. simple carbon sources c. carbon monoxide d. oxygen gas

Description : Organisms that practice heterotrophy are able to synthesize their own food from _____. a. light b. simple carbon sources c. carbon monoxide d. oxygen gas

Last Answer : b. simple carbon sources

The half life period of a radioactive substance is best determined by counting the number of alpha particles emitted per second in a GeigerMuller counter from its known quantity. If the half life period of aradioactive substance is one month, then(A) 3/4th of it will disintegrate in two months(B) It will completely disintegrate in two months(C) It will completely disintegrate in four months(D) 1/8th of it will remain intact at the end of four months

Description : The half life period of a radioactive substance is best determined by counting the number of alpha particles emitted per second in a GeigerMuller counter from its known quantity. If the half life period of a ... in four months (D) 1/8th of it will remain intact at the end of four months

Last Answer : (B) It will completely disintegrate in two months

Ozone saves the biosphere by absorbing high energy radiations called _____ . (1) Infra-red (IR) (2) Gamma rays (3) Ultraviolet rays (UV) (4) X–rays

Description : Ozone saves the biosphere by absorbing high energy radiations called _____ . (1) Infra-red (IR) (2) Gamma rays (3) Ultraviolet rays (UV) (4) X–rays

Last Answer : Ultraviolet rays (UV) 

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

Which of the following techniques may be performed quantitatively to determine the number of bacteria of a particular type? A.Pour plate B.Spread plate C.Both (a) and (b) D.Streak plate technique

Description : Which of the following techniques may be performed quantitatively to determine the number of bacteria of a particular type? A.Pour plate B.Spread plate C.Both (a) and (b) D.Streak plate technique

Last Answer : C.Both (a) and (b)

The bacterial cytoskeleton a. transport vesicle b. helps determine cell shape c. Is organized identical to its eukaryotic counterpart. d. Centers the nucleoid.

Description : The bacterial cytoskeleton a. transport vesicle b. helps determine cell shape c. Is organized identical to its eukaryotic counterpart. d. Centers the nucleoid.

Last Answer : b. helps determine cell shape

Which of the following is method to determine viable count? A Plate Count technique B Breed method C Turbidimetry D Proportional count technique

Description : Which of the following is method to determine viable count? A Plate Count technique B Breed method C Turbidimetry D Proportional count technique

Last Answer : A Plate Count technique

The following statement(s) is/are true concerning newer detection methods of systemic infection. a. Enzyme-linked immunosorbent assay (ELISA) is a rapid immunologic assay used for both antigen and antibody detection b. Southern, northern, and western immunoblot techniques are used to detect DNA, RNA, or proteins, respectively c. Polymerase chain reaction (PCR) is a sensitive assay used to detect small amounts of microbial DNA, thus detecting infection at its early stages d. Infectious agents currently detected using advanced molecular techniques include cytomegalovirus (CMV) and human immunodeficiency virus (HIV)

Description : The following statement(s) is/are true concerning newer detection methods of systemic infection. a. Enzyme-linked immunosorbent assay (ELISA) is a rapid immunologic assay used for ... detected using advanced molecular techniques include cytomegalovirus (CMV) and human immunodeficiency virus (HIV)

Last Answer : Answer: a, b, c, d Although the classic detection of infection based on clinical signs of infection and bacterial culture remain the most common clinical tools, increasing ... including CMV and HIV. Furthermore, preliminary investigations into possible detection of fungal pathogens are underway

In the construction of partial dentures the surveyor is not used to, A. Contour the wax as part of the fabrication of the working cast B. Locate the guide planes C. Determine the location of indirect retainers D. Identify any undesirable undercuts

Description : In the construction of partial dentures the surveyor is not used to, A. Contour the wax as part of the fabrication of the working cast B. Locate the guide planes C. Determine the location of indirect retainers D. Identify any undesirable undercuts

Last Answer : A. Contour the wax as part of the fabrication of the working cast