A scientist takes field notes on a newly discovered organism. The field notes read: “Organism is prokaryotic, unicellular….lives in hydrothermal vents with temperatures exceeding 90C, which is an extreme temperature, has a cell wall without peptidoglycan….has simple homeostasis processes. In which kingdom should this organism be classified?

a) Protista

B)Fungi

C)Eubacteria

d)Archaebacteria

Which of the following is a cost of urbanization? a-cities can provide a high standard of living. b-cities are hubs of entertainment and education. c-paving over land changes the environment. d-job opportunities are greater in urban centers.

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

There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.