Answers: 2
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, 21.06.2019 23:30
Which of the following would be an important part of a multi-step plan to restore the stability of the red-cockaded woodpecker's ecosystem?
Answers: 1
Biology, 22.06.2019 00:00
Which of the following is a consequence of urban heat islands? increased precipitation downwind of the city? increased precipitation upwind of the city? decreased winds within the city? increased winds within the city?
Answers: 1
Which of the following is not part of the role of a forester?...
History, 02.09.2019 13:00
English, 02.09.2019 13:00
English, 02.09.2019 13:00
Chemistry, 02.09.2019 13:00
Geography, 02.09.2019 13:00
Mathematics, 02.09.2019 13:00
Biology, 02.09.2019 13:00
English, 02.09.2019 13:00
History, 02.09.2019 13:00
Mathematics, 02.09.2019 13:00