Download Homeostasis and the Cell

Warm-up Questions:
Balancing the cell
• What do ribosomes produce?
• What is the product of the
mitochondria?
• The tendency of a system to maintain its internal stability.
• We sweat or shiver to maintain our body’s core temperature.
• Homeostasis happens, as well, at a cellular level in order to
maintain the stability of the cells.
• The plasma membrane/cell wall use different processes like
diffusion and osmosis to allow particles (water, salt, wastes, etc)
in and out of the cell.
• When the cell is not in a state of homeostasis, the nucleus can
send out signals to other organelles in order to have them adjust
their current processing to account for the imbalance.
• Diffusion is the transport of molecules from an area of high
concentration to an area of low concentration. Spraying
perfume is an example of diffusion.
• Osmosis is the transport of water through the semi-permeable
plasma membrane or cell wall in plants.