Question

drinking too much water during exercise can cause a condition in which the concentration of sodium in the blood is lower than normal.
what immediate response would the blood cells have in this condition?
cells swell as water moves into them.
cells swell as water moves out of them.
cells shrivel as water moves out of them.
cells shrivel as water moves into them.

Explanation:

This question relates to osmosis in cells, a concept in Biology (Natural Science subfield). When blood sodium concentration is low, the blood is hypotonic relative to blood cells. In osmosis, water moves from an area of lower solute concentration (hypotonic, blood) to higher solute concentration (cells). So water enters cells, causing them to swell. The correct option is the one where cells swell as water moves into them.

Answer:

Cells swell as water moves into them.