Which of the following statements is valid? A Relative mass is the weight of one atom of an element.
B Relative mass is the mass of one atom of the element as it compares to 1/12th of an atom of
carbon.
C. Relative mass changes with the planet is measured on.
D None of the statements listed above are true.

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

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

Which blood cell spend most of their time in the lymphatic system?