Subject: Science What is this microwave radiation?

O A. Radiation that comes from stars that are forming all over the universe

B. Radiation that was released as matter formed in the early universe

C. Radiation that is released continually as the universe expands

D. Radiation that is released from all the galaxies in the universe, added together

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What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

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

Hershey and chase confirmed that dna, not protein, was the genetic material. how do the results of their two experiments support this conclusion?