1. What does homeostasis enable the body to do despite changes in the external environment?
2. What is the term for regulating the composition of internal fluids such as blood, lymph, and interstitial fluid?
3. A cell is placed in a solution with a higher solute concentration than its own. What is the likely effect on the cell?
What is homeostasis?
The body's ability to maintain relative stability in its internal environment despite external changes.
What must a multicellular organism consistently maintain to survive?
The composition of its internal environment, including blood, lymph, and interstitial extracellular fluid.
What is the regulation of a multicellular organism’s internal fluid composition called?
Osmoregulation.
What happens to a cell in a hypertonic solution?
Water leaves the cell, dehydrating it.
How does an isotonic solution compare with a cell’s solute concentration?
It has the same solute concentration.
What happens to a cell in a hypotonic solution?
Water enters the cell, causing it to swell and possibly burst.
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