11) Check TWO that apply. If a spill occurs you should:

Neutralize acids with acids and bases with bases.

Clean up the mess and dispose of chemicals in the sink.

Immediately go and get the mop to clean it up, make sure your teacher does not see it.

Leave the area immediately.

All work in the lab should stop, and all students should be evacuated from the area.

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

In "the man in the water," what was the remarkable occurrence that rosenblatt reported?

Which environmental change would most likely result in bullfrog offspring that are able to store more water than bullfrogs in previous generations?