Biology, 27.07.2019 18:00 JvGaming2001
The most common type of skin cancer, which produces an open ulcer that can easily be treated with radiation therapy or surgical removal, is malignant melanoma. true or false
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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 05:30
What is the compliment dna strand to the following sequence: ttgactaggcta
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Biology, 22.06.2019 11:50
Which of the following describes how binary fission and mitosis are similar? a)they are both used for growth or repair b)they both break down membrane-bound nuclei c)both invoke the replication of a single stand of dna d)both replicate genetic material
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Biology, 22.06.2019 12:30
Describe the relationship between isotonic solutions, equilibrium, and water movement into and out of a cell.
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The most common type of skin cancer, which produces an open ulcer that can easily be treated with ra...
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