You are performing an in vitro experiment in which you will expose a material you are
considering for a medical device to synovial fluid, which contains the proteins albumin,
transferrin, and igm at concentrations of 5, 0.5, and 0.05 mg/ml, respectively. each of these
components has a particular affinity for your material, with igm being the highest and
albumin being the lowest.
a. describe the kinetics of protein adsorption to your material and how the surface
concentration of each protein will change with time.
b. subsequently in the experiment, more albumin is added to the synovial fluid. what effect
will this have on the proteins adsorbed on the surface?

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

Hedgerows have created a new ecosystem within britain’s a. farms b. cities c. forests d. industrial areas

Which of the following statements most accurately describes convergent evolution? the process in which two similar species evolve separately from each other and share similar characteristics the process in which a single species evolves into two or more new species the process in which two entirely different species evolve in response to each other the process in which two different species evolve separately from each other but still share similar characteristics