Biology, 27.07.2019 22:00 Aliciaonfleek
What are the parts of a nucleotide? a. glycerol+three fatty acids b. sugar+ three phosphates c. glycerol + two fatty acids + phosphate d. sugar +phosphate + nitrogen base
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, 22.06.2019 01:20
Which of the following is not considered an appendage of the skin? nails glands follicles none of the above
Answers: 2
Biology, 22.06.2019 14:40
Explain the causes and effect of damage to the genetic code.
Answers: 1
Biology, 22.06.2019 16:00
Qué sucede cuando una persona tiene muy poco o demasiado costeroides?
Answers: 1
What are the parts of a nucleotide? a. glycerol+three fatty acids b. sugar+ three phosphates c. gly...
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