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Cell Boundaries

Cell boundaries, Diffusion, Osmosis, and Hyper-Hypo-Isotonic solutions.

QuestionAnswer
Protiens, protien channels, and a lipid bilayer. Cell Membrane
Protects cell, regulates what goes in & out of cell, and helps maintain homeostasis. Cell Membrane
Found in some bacteria and fungi, plants, and some protista. Cell Wall
Involved in protection and structure Cell Wall
The number of molecules or ions in one region is different than in another region. Concentration Gradient
Where does a substance naturally go on its concentration gradient? Down
Movement from an area of high concentration to low concentration. Diffusion
Requires no energy to move in or out of cell Passive Transport
Equal throughout Equilibrium
Steeper concentration gradient, smaller molecules, higher temperature... faster Diffusion
The movement of water across a selectively permeable membrane. Osmosis
Equal concentration of solute inside and outside of the cell. Isotonic
Higher solute concentration outside the cell than inside the cell-- cell shrinks. Hypertonic
Higher solute concentration inside the cell than outside the cell-- cell expands. Hypotonic
Requires energy; moving a substance against the concentration gradient-- low to high. Active Transport
Active transport of substances into the cytoplasm. Endocytosis
Active transport of substances out of the cytoplasm. Exocytosis
Created by: Coonae
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