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How do Cells keep us Healthy? - Coggle Diagram
How do Cells keep us Healthy?
Cell membrane structure
has 3 main functions that help maintain homeostasis
• Protection- protects cell from outside world
• Regulation- controls what can enter and leave cell
• Cell communication- can send and receive signals
from outside world
membrane is made of phospholipids and proteins are inserted between these making the membrane semi-permeable
has hyrdophobic tails and hydrophyllic heads
Osmosis- water moving through the membrane (passive diffusion)
Types of solutions
isotonic- moving at equal rates
hypertonic- moving out of the cell
hypotonic-moving into the cell
does not require energy and use to deliver nutrients and remove waste
Diffusions in cells
Passive Transport: is simple and faccilitated
3 Types of cell transport
• Simple transport- requires no energy, no special protein
AND transports
Molecules with the concentration gradient
• Facilitated Diffusion-(Passive transport with a protein)
requires no energy and uses a protein to
transport molecules
• Active- requires energy in the form of ATP AND
transports molecules AGAINST the concentration
gradient
sodium potassium pump and glucose transport
requires ATP and goes against the gradient using protein
Bulk Transport
Endocytosis: a process by which cells absorb external material by engulfing it with the cell membrane.
Exocytosis: the process by which cells move materials from within the cell into the extracellular fluid