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Cells are typically ovoid, elongate, or foot- or cigar-shaped. The body of the cell is enclosed by a stiff but elastic structure called the pellicle. The pellicle consists of an outer cell membrane (plasma membrane), a layer of flattened membrane-bound sacs called alveoli, and an inner membrane called the epiplasm. The pellicle is not smooth ...
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Paramecium are adaptive to many environments due to the diastole and systole movements of the contractile vacuole, which either let in or expel water from the cytoplasm depending on the environment. The micronucleus and macronucleus together contain all of the genetic information for the organism.
Drawing by Alfred Kahl "Slipper animalcule", illustrated by Louis Joblot, 1718. Paramecium caudatum is 170–330 micrometres long (usually 200–300 micrometres). [6] The cell body is spindle-shaped, rounded at the front, tapering at the posterior to a blunt point. Early microscopists likened its shape to that of a slipper, and commonly ...
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Original - The cell membrane, also called the plasma membrane or plasmalemma, is a semipermeable lipid bilayer common to all living cells. It contains a variety of biological molecules, primarily proteins and lipids, which are involved in a vast array of cellular processes.
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This image is a derivative work of the following images: Image:Cell_membrane_detailed_diagram_3.svg licensed with Cc-by-sa-3.0 . 2008-06-13T14:41:45Z Dhatfield 1973x1532 (498192 Bytes) {{Information |Description=The cell membrane, also called the plasma membrane or plasmalemma, is a semipermeable lipid bilayer common to all living cells.