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; cell : c.1131, "small room," from L. cella "small room, hut," related to L. celare "to hide, conceal," from PIE base *kel- "conceal" (cf. Skt. cala "hut, house, hall;" Gk. kalia "hut, nest," kalyptein "to cover," koleon "sheath," kelyphos "shell, husk;" L. cella "store room," clam "secret;" O.Ir. cuile "cellar," celim "hide," M.Ir. cul "defense, shelter;" Goth. hulistr "covering," O.E. heolstor "lurking-hole, cave, covering," Goth. huljan "cover over," hulundi "hole," hilms "helmet," halja "hell," O.E. hol "cave," holu "husk, pod"). Earliest sense is for monastic rooms, then prison rooms (1722). Used in Biology 17c., but not in modern sense until 1845. Meaning "small group of people working within a larger organization" is from 1925. Cellphone is from 1984. ;
; membrane : 1519, "parchment," from L. membrana "parchment," from membrum "limb, member of the body" (see member). The etymological sense is "that which covers the members of the body." Meaning "thin layer of skin, tissue covering a limb or organ" is attested from 1601.
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What regulates passage of materials into and out of cells?
The cell membrane controls movement of materials in and out of the cell.
Which cell structure controls what enters and leaves the cell?
The selective permeability of the cell membrane
What cell structures are made primarily from phospholipids?
cell membrane
What controls entry into and out of the cell?
Cell Membrane
What is the thin flexible membrane around all cells?
the cell membrane is as flexible barrier outside of the cell.
What regulates passage of materials into and out of cells?
The cell membrane controls movement of materials in and out of the cell.
Which cell structure controls what enters and leaves the cell?
The selective permeability of the cell membrane
What cell structures are made primarily from phospholipids?
cell membrane
What structure controls the passage of substances into and out of the cell?
cell membrane
What controls entry into and out of the cell?
Cell Membrane
What is the thin flexible membrane around all cells?
the cell membrane is as flexible barrier outside of the cell.
Where is the cell control center and the cell membrane?
where is the cell control membrane and the cell membrane
What Controls what moves in and out of the cell?
Cell membrane
Which part in the cell is fully permeable and selectively permeable?
in plants cell surface membrane! and in animal plasma membrane!
What is the outer boundary of a cheek cell called?
The outer edge of a plant cell is called the cell wall
The outer covering of a cell that controls what enters and leaves is called the?
cell membrane
The membrane surround and protect the cell?
Its called the cell membrane or the plasma membrane.
