What two things are added to nadp+ to convert it into nadph?

It requires one electron (e-) and one hydrogen ion (H+) to convert NADP+ into NADPH.

This is the reaction of NADP+ reduction (NADPH is the reduced form of NADP which is the oxidized form).  NADPH is a reducing agent, which means it reduces and gains electrons.

NADPH plays an important role in anabolic reactions (metabolic reactions that build up complex molecules from simpler ones), that require energy. For example, the synthesis of fatty acids and cholesterol require presence of NADPH. NADPH is crucial in carbohydrate synthesis occurring in plants where is produced from NAPD+ molecule during the light-dependent reactions of photosynthesis. NADPH in other living organisms that are not photosynthetic, is a product of pentose phosphate pathway, which is mainly an anabolic pathway.

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.