Which of the following is NOT a characteristic of eukaryotic cells? A nucleus

DNA in the cytoplasm

Membrane-bound organelles

DNA in the cytoplasm

Explanation:

Prokaryotic cells are defined by the lack of membrane-bound organelles and a defined nucleus. Instead, the cell's processes take place in the cytoplasm. The cell's DNA is also found in the cytoplasm.

Eukaryotic cells are the opposite - they are defined by the presence of a defined nucleus and membrane-bound organelles, such as mitochondria, endoplasmic reticulum, and lysosomes. The genomic DNA is found inside the nucleus, not the cytoplasm.

format change of dna.  

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.