Which of the following are examples of sexual reproduction? A frog releases sperm over eggs that were laid by another frog, and these cells fuse together.
A bacterium copies its DNA and divides into two daughter cells in a process called binary fission.
A yeast offspring grows out of the body of its parent in a process called budding.
A pollen grain from on
e flower fertilizes another flower, resulting in the development of a seed.
A piece of a starfish is broken off and grows into a new starfish in a process called regeneration.

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

Many animals cannot sweat to maintain a stable body temperature. what is one other way animals can cool down?

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?