Answers: 1
Biology, 21.06.2019 20:00
You have been asked to lead a demonstration for the undergraduate microbiology lab course about the uses of negative staining when studying bacteria. a "negative" stain does not stain the bacterial cell itself but stains the space between cells. under magnification, the acidic (negativelycharged) nature of the stain will be repelled by the negatively charged bacterial cell wall and willleave the cell colorless in a stained background. negative stains are used primarily to reveal the presence of negatively charged bacterial capsules; therefore, they are also called capsule stains. encapsulated cells appear to have a halo surrounding them. the negative stain procedure does not require heat fixation, which limits any chances of alteration in bacterial cell shape and size. the bacterial suspension is added to a drop of stain, such as nigrosin or eosin, and drawn across the glass slide using a coverslip.nigrosin staining-not safranin staining-of klebsiella pneumoniae will allow for the visualization of the cell shape and the determination of the presence of a capsule.true/false
Answers: 1
Biology, 22.06.2019 05:10
Any sound above what db can cause hearing loss in human beings
Answers: 1
Biology, 22.06.2019 05:50
Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?
Answers: 1
Biology, 22.06.2019 16:30
Explain how mendel kept his pea plant from self pollination
Answers: 3
It's very important !
in a species of dogs, a black coat is dominant over a white coat. the...
in a species of dogs, a black coat is dominant over a white coat. the...
Social Studies, 30.06.2019 17:40
History, 30.06.2019 17:40
World Languages, 30.06.2019 17:40
History, 30.06.2019 17:40
Social Studies, 30.06.2019 17:40
Biology, 30.06.2019 17:40
Physics, 30.06.2019 17:40
Biology, 30.06.2019 17:40
History, 30.06.2019 17:40