Like mammals, dolphins interact with each other, but they do it underwater. which is a learned behavior that the dolphins use? a. an ability to communicate with clicks and whistles b. special eyes that see underwater c. a blowhole on top of its head d. an impulse to swim to the surface

Which list shows the levels of organization of an organism in hierarchical order from left to right, from the smallest to the most complex?

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 is the next step in muscle contraction after the actin changes shape? (apex)