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Microbiology
May I know the recommended dilution factors for the strain Acetobacter nitrogenifigens sp. if i am presented with approx. 10^9 CFU/ml? If I am designing an experiment to test if the pH level is suitable for human intestinal flora, what would be the negative control to inhibit the growth of Acetobacter if I have to keep the temperature and conditions the same? Please help and thank you!
Microbiology
what is common between ameoba and elephant
Microbiology
Question 15 : Atmospheric nitrogen is directly useable by most organisms but has to be converted to stable organic form such as ____. I. Ammonium II. Ammonia III. Nitrate
I and III
I, II and III
I only
II only
Question 16 : The vaccine for the disease anthrax was developed between the period __
1870 -1880
1860 - 1870
1880 - 1890
1890 - 1900
Question 17 : The following are external structure of a bacterial cell wall except ____.
Flagella
spores
capsules
Spores and cysts
Question 18 : The following are types of asexual spores in fungi except ____.
Chemydospores
Oidia
Condiospores
Blastospores
Question 19 : When a culture of microorganisms is transferred from a nutritionally poor medium to a richer one,____ occurs.
shift up
shift left
shift right
shift down
Question 20 : Who pioneered the use of enrichment cultures and selective media?
Behring and Kitasato
Jenner and Kitasto
Beijerink and Winogradtsky
Jenner and Behring
I and III
I, II and III
I only
II only
Question 16 : The vaccine for the disease anthrax was developed between the period __
1870 -1880
1860 - 1870
1880 - 1890
1890 - 1900
Question 17 : The following are external structure of a bacterial cell wall except ____.
Flagella
spores
capsules
Spores and cysts
Question 18 : The following are types of asexual spores in fungi except ____.
Chemydospores
Oidia
Condiospores
Blastospores
Question 19 : When a culture of microorganisms is transferred from a nutritionally poor medium to a richer one,____ occurs.
shift up
shift left
shift right
shift down
Question 20 : Who pioneered the use of enrichment cultures and selective media?
Behring and Kitasato
Jenner and Kitasto
Beijerink and Winogradtsky
Jenner and Behring
Microbiology
Help identifying some bacteria upon CLED agar.
1) Yellow colonies, gram positive cocci, catalase positive, coagulase negative, oxidase negative.
2) Yellow colonies dark centre (brownish), gram negative bacilli, catalase positive, coagulase negative, oxidase negative.
3) Beige colonies, gram positive cocci, catalase positive, coagulase negative, oxidase positive
4) green colonies, catalase positive, oxidase positive (colonies were rough around edges and 1-2 mm)
1) Yellow colonies, gram positive cocci, catalase positive, coagulase negative, oxidase negative.
2) Yellow colonies dark centre (brownish), gram negative bacilli, catalase positive, coagulase negative, oxidase negative.
3) Beige colonies, gram positive cocci, catalase positive, coagulase negative, oxidase positive
4) green colonies, catalase positive, oxidase positive (colonies were rough around edges and 1-2 mm)
Microbiology
List the central chemoreceptors in alphabetical order!?
Microbiology
Where is growth of white yeast saccharomyces cerevisiae in stab cultures draw an image
And write about why it occured
And write about why it occured
Microbiology
Describe the use of lawn and pour plates and consider why you might choose one of these methods over the other ?
Microbiology
Draw a structure of phanerochaete Chrysosporium that has been stained with lactophenol cotton blue.
and fully label the structures you see e.g chitin, mycelia, stalks and spores etc.
and fully label the structures you see e.g chitin, mycelia, stalks and spores etc.
Microbiology
I have a stage micrometre that is 1mm in length and separated by 100 divisions. You have been provided with an eyepiece graticule and a stage micrometre.
1) Calibrate the microscope eyepiece graticule at the x40 objective using the stage micrometre. Show your working
at 40x objective, one eyepiece unit =
in simple steps please. Thank you god bless
1) Calibrate the microscope eyepiece graticule at the x40 objective using the stage micrometre. Show your working
at 40x objective, one eyepiece unit =
in simple steps please. Thank you god bless
Microbiology
I have a stage micrometre that is 1mm in length and separated by 100 divisions. You have been provided with an eyepiece graticule and a stage micrometre.
1) Calibrate the microscope eyepiece graticule at the x10 objective using the stage micrometre. Show your working
at 10x objective, one eyepiece unit =
in simple steps please. Thank you god bless
1) Calibrate the microscope eyepiece graticule at the x10 objective using the stage micrometre. Show your working
at 10x objective, one eyepiece unit =
in simple steps please. Thank you god bless
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#340153 on Dec 2023
#340153 on Dec 2023