Which is occurring during conjugation? A. There is a change in the nucleotide sequence of a DNA molecule.

B. A bridge-like connection is created between bacterial cells for genetic material to
be transferred.

C. A bacterial cell takes DNA fragments from a dead cell and incorporates them into
their DNA molecule.

D. There is a transfer of DNA from bacterium to another by a virus.

B. A bridge-like connection is created between bacterial cells for genetic material to  be transferred.

Explanation:

A. There is a change in the nucleotide sequence of a DNA molecule.  - this is describing a genetic mutation

B. A bridge-like connection is created between bacterial cells for genetic material to  be transferred.  - this is conjugation, a type of genetic transfer between donor and recipient bacterial cells. It is a way that bacterial cells achieve genetic variation. For example, bacteria can share antibiotic resistance genes between one another. They do not directly contact one another, instead, they use a structure called a pilus to exchange material

C. A bacterial cell takes DNA fragments from a dead cell and incorporates them into  their DNA molecule.  - this is transformation, another type of genetic transfer where bacterial cells take up bacterial DNA from the environment. These molecules of DNA are usually from dead bacteria

D. There is a transfer of DNA from bacterium to another by a virus. - this is another type of gene transfer called transduction, where a virus takes genetic material from one bacteria to another.

regents of the university of california v. bakke, 438 u.s. 265 (1978), was a landmark decision by the supreme court of the united states. it upheld affirmative action, allowing race to be one of several factors in college admission policy.

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.