Which of the following scenarios would be an example of diffusion? a. when you inhale oxygen into your lungs, it is sent through your bloodstream to the rest of your body. b.snifing is a way to send the mucus back into your sinuses so it does not cause more problems. c.when you walk, the bones being used quickly send the info to the muscles needed so they will begin using cellular respiration. d.when you blink your eye because somthing is in it. that causes the objest to be sent into your eyeball and through out your blood stream as a waste.

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

What causes temperature extremes in the desert

What is the term for the two sets of chromatids formed in the parent cell a.haploid b.diploid c.gamete d.tetrad