Biology, 18.08.2019 13:50 amandaelisantos
Alchemy was practiced: -in the middle ages -by modern chemists -by renaissance scientists
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Biology, 21.06.2019 14:30
Most scientific questions are based on opinions. hypotheses. observations. experimental data.
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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
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Biology, 22.06.2019 05:00
A60-tooth gear is connected to a 72-tooth gear.if the smaller gear turns 12 times,how many turns does the larger gear make?
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Biology, 22.06.2019 22:00
Identify the fungus type pictured below. the image shows a mushroom used often in cooking, will gills underneath its cap.
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Alchemy was practiced: -in the middle ages -by modern chemists -by renaissance scientists...
Mathematics, 25.12.2019 10:31
Mathematics, 25.12.2019 10:31
Health, 25.12.2019 10:31
Mathematics, 25.12.2019 10:31
Mathematics, 25.12.2019 10:31
History, 25.12.2019 10:31
History, 25.12.2019 10:31
Biology, 25.12.2019 10:31
Mathematics, 25.12.2019 10:31