Which of the following is an example of a community?
a all of the animals in north amer...
Biology, 08.01.2020 17:31, skpdancer1605
Which of the following is an example of a community?
a all of the animals in north america.
b all of the geese in the world.
c all of the organisms living within a lake.
d all of the grass in a meadow.
Answers: 3
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
Answers: 1
Biology, 22.06.2019 10:30, genyjoannerubiera
Jason, a dog breeder, decides to mate a poodle with a golden labrador retriever. he wants to get puppies with the curly hair of the poodle and the color of the labrador. what concept is shown in this example? question 6 options: artificial selection adaptation evolution natural selection
Answers: 1
Mathematics, 09.10.2019 16:00
Mathematics, 09.10.2019 16:00
Biology, 09.10.2019 16:00
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English, 09.10.2019 16:00
English, 09.10.2019 16:00
Mathematics, 09.10.2019 16:00
Mathematics, 09.10.2019 16:00