mindmap 22
1
Cell Membrane Functions Surround organelles inside cells Provide attachment sites for enzymes etc. Partially- permeable Involved in cell signalling Electric signals can pass along them Control what passes through them Small or uncharged particles can pass through phospholipids Protein channels and transport proteins control passage of large or charged particles Isolate reactions inside organelles from cytplasm Substance produced by one cell docks into a receptor in the plasma membrane of another Receptors include glycoproteins and lipoproteins E.g. membrane of the axon of a motor- neurone transmits action potentials from the CNS to a muscle E.g. inner membrane of a chloroplast contains chlorophyll needed for photosynthesis
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Transcript of mindmap 22
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Cell MembraneFunctions
Surroundorganellesinside cells
Provideattachment sitesfor enzymes etc.
Partially-permeable
Involved incell signalling
Electric signalscan pass
along them
Controlwhat passesthrough them
Small oruncharged
particles canpass throughphospholipids
Proteinchannels
and transportproteins control
passageof large orchargedparticles
Isolatereactions
insideorganelles
from cytplasm
Substanceproduced by
one cell docksinto a receptorin the plasma
membraneof anotherReceptors
includeglycoproteins
andlipoproteins
E.g. membraneof the axonof a motor-
neuronetransmits
actionpotentials
from the CNSto a muscle
E.g. innermembrane ofa chloroplast
containschlorophyllneeded for
photosynthesis