Chemicals can affect an ecosystem. which of the following is a result of pesticide application?

a.
pesticide application does not affect ecosystems. this is why it is widely used on farms and ranches.
b.
pesticide application improves soil fertility, increasing the diversity of plants in the ecosystem.
c.
pesticide kills all kinds of insects, including predatory insects, which in turn can increase the population of insects for which the pesticide was intended.
d.
it always leaves a residue on plant leaves, reducing photosynthesis.

What are the steps of how energy is transformed in plant cells?

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

The term used to describe a disease-causing microorganism isa. virus. b. infection. c. pathogen. d. microbe. e. bacterium.