you test a strain of bacteria, strain x with an antibiotic and all of the bacteria are killed. overnight there is an accident and your bacteria strain is
mixed with another strain, strain y, known to be antibiotic resistant. you separate them out again and perform the same antibiotic test on strain
x again, but this time a few survive. what probably happened?
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a. bacteria can't transfer anything to each other, it was a coincidence.
b. mixing with the other strain dissolved the capsule on some of the bacteria, allowing them to survive.
c. when they mixed, some of the bacteria from strain x obtained plasmids from strain y, these plasmids gave them dna that allowed
them to resist the antibiotic.
d. some of the bacteria from strain x engulfed the strain y bacteria, taking their resistance to antibiotics
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succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation:

it has to be understood that the sea water contains a huge amount of sodium and chlorine ions and if they enter the cell of the atlantic cod fish, the cell will shrivel and the fish will die. to avoid such a condition, the fish uses active transport for the purpose of removing the ions against the gradient.

explanation:

the atlantic cod is not a maritime osmoconformer. its native application of salts is less than that of the seawater it lives in. it is continually falling water from the gills to the ocean via osmosis.

countering that, the fish is going to be swallowing seawater. but since its internal collection of salts is lower than seawater, the fish will want to go free of excess salt, and since that's going upon a gradient, then active transport, requiring energy, must be used to pump out the salt. much marine fish use the organs to filter out the salt and these fish discharge very straight urine.