The shape of a protein molecule directly determines (1) movements through the cytoplasm (2) functions inside and outside of cells (3) roles in building water molecules (4) circulation throughout the body !

The right answer is (2)

The proteins fold on themselves to adopt a unique native 3-D structure that gives them their biological properties.

Proteins are organized into domains: they are functional and / or structural units distinct from proteins. They are usually responsible for a particular function or interaction and contribute to the function of the protein.

thinking it would be d not too sure but i think it's right

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.