Which correctly describes sister chromatids? (1 point) A. They make up the mitotic spindle within the cell.

B. They form during metaphase when DNA is being replicated.

C. They are the daughter cells that form during cell replication.

D. They are part of the lined-up chromosomes in mitosis.

Na+ loss through sweet plus the dilution has lowered na+ concentration outside of neurons, altering the na+ equilibrium potential. sodium exists more outside the cells than inside. when na+ is lost by sweat plus the dilution( because they drink a lot of water) changes the concentration outside the cell, forcing the water to enter the cell and attempt to balance the concentration inside/outside.the problem is that the abundance of water will cause the cells to swell. most cells can adapt, however, the brain cells can't that's why the runner has confusion and can't control the muscles.  if not treated and this occurs in less than 48 hours, it can be immediately fatal .