During heatstroke, the body can't dispose of excess heat. as a result, the homeostatic balance is disturbed, and internal body temperatures can reach as much as 110°. heatstroke is dangerous to people primarily because a. it causes pneumonia. b. blood vessels may rupture. c. blood pressure becomes too low. d. cells can't function properly at high temperatures.

option D - cells can't function properly at high temperatures.

Explanation:

Heatstroke is a severe case of abnormally high temperature in the body usually above 40.8°Celsius or 105.1 °Fahrenheit.

Cells function best at a particular physiological tempeature (usually 37°C), above which they malfunction.

Thus, at high temperatures cells can't function properly

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.