ucia was comparing animal and plant cells under a microscope. She thought that she was looking at plant cells. Lucia asked her science teacher to take a look and see if she was correct. Lucia’s teacher looked at the cells and told her that she was correct. What did both Lucia and her teacher see under the microscope?A. a large nucleus in each cellB. a large vacuole in each cellC. cells that had irregular shapesD. a membrane surrounding each cell
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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, 21.06.2019 21:00
Ausable water source is one that can be used by humans for drinking or agriculture. identify the water reservoirs as usable or unusable based on their current state. oceans rivers glaciers freshwater lakes groundwater
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Biology, 21.06.2019 22:30
Models are non-visual ways of coummincating how someone thinks about something in the natural world
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Biology, 22.06.2019 01:00
The allele for curly hair is incompletely dominant. if a mother is homozygous for curly hair and the father is homozygous for straight hair, what percentage of the offspring will exhibit characteristics of both parents? 25 percent 50 percent 75 percent 100 percent
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ucia was comparing animal and plant cells under a microscope. She thought that she was looking at pl...
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