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Some major cell structures and their functions
C0II Structure
Functions
MEMBRANOUS Plasma membrane
Endoplasmic reticulum (ER)
Golgi apparatus
Lysosomes Peroxisomes Mitochondria Nucleus
NONMEMBRANOUS
Ribosomes
Cytoskeleton
Cilia and Flagella
Nucleolus
Serves as the boundary of the cell, maintaining its integrity; protein molecules on outer surface of plasma membrane perform various functions; for example, they serve as markers that identify cells of each individual, as receptor molecules for certain hormones and other molecules, and as transport mechanisms
Ribosomes attached to rough ER synthesize proteins that leave cells via the Golgi complex; smooth ER synthesizes lipids incorporated in cell membranes, steroid hormones, and certain carbohydrates used to form glycoproteins
Synthesizes carbohydrate, combines it with protein, and packages the product as globules of glycoprotein
A cell's "digestive system"
Contain enzymes that detoxify harmful substances
Catabolism; ATP synthesis; a cell's "power plants"
Dictates protein synthesis, thereby playing essential rote in other cell activities, namely, cell transport, metabolism, and growth
Synthesize proteins; a cell's "protein factories"
Acts as a framework to support the cell and its organelles; functions in cell movement; forms cell extensions (microvilli, cilia, flagella)
Hairlike cell extensions that serve to move substances over the cell surface (cilia) or propel sperm celts (flagella)
Plays an essential role in the formation of ribosomes
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