CELL & ENVIRONMENT Flashcards
self regulating process by which biological systems maintain stability while adjusting to changing external conditions
homeostasis
what are the different substance transport through the cell
diffusion
passive transport
osmosis (passive)
active transport
a substance transport where molecules flow from higher concentration to lower concentration
diffusion
a substance transport where molecule move through membrane without energy exerted
passive transport
a substance transport where water molecule move through semi-permeable membrane from lesser solute to greater solute concentration
osmosis (passive)
a substance transport where molecules move where energy is exerted by the cell
active transport
aid in the transport of molecules across the membrane
transport molecules
the process of assimilating large substances into a cell
endocytosis
the process in which a cell engulfs large solid objects such as bacteria & other food particles
phagocytosis
“cell drinking”, the movements of solutes or fluids into the cell
pinocytosis
the process by which wastes are packaged in vesicles and are released through a cell membrane
exocytosis
what are the external & internal conditions of cell
isotonic
hypotonic
hypertonic
a condition of cell where concentration of solute molecules inside & outside are equal or the same
isotonic
a condition of cell where characterized by a lower osmotic pressure inside the cell compared to the surrounding medium or fluid outside the cell
hypotonic
a condition of cell where characterized by higher osmotic pressure inside the cell compared to the surrounding medium or fluid outside
hypertonic
