Which statement best describes the amount of catalyst that remains at the end of a reaction? a. more catalyst is present at the end than at the beginning of the reaction. b. less catalyst is present at the end than at the beginning of the reaction. c. the amount of catalyst is the same at the end as at the beginning of the reaction. d. the catalyst is consumed by the reaction, so none remains at the end of the reaction.

The correct answer is option C. The amount of catalyst is the same at the end as at the beginning of the reaction.

The catalyst is a compound, which is added to a chemical reaction to speed it up. The catalyst act as an enhancer of the reaction, it is not involved in the reaction. As the catalyst is not involved in the reaction process, then amount of the catalyst is not reduced during the reaction. Also, the catalyst is not generated during the reaction so, the amount of the catalyst does not increase. So, the amount of the catalyst present in the starting remains the same at the end of the reaction.

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.

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.