Biology, 25.03.2020 18:03, keaudresp57ie1
Why was Aristarchus’s model not accepted? Check all that apply
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Biology, 21.06.2019 20:00, skylex
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, mydoggy152
Penelope studies how the structure and function of the nervous system is related to behavior. she is a psychologist
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Biology, 22.06.2019 05:10, Jakeandjenn21
7. describe two strategies that parents can use to cope with stress. 8. describe the three types of childcare available to families. 9. what can parents do to be more involved in their children's education at home and at school? 10. which factors should a parent consider when choosing a childcare option?
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Biology, 22.06.2019 05:30, johniyabrown26
Which event would lead to primary succession of a forest?
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Why was Aristarchus’s model not accepted? Check all that apply...
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