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20 Cards in this Set
- Front
- Back
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LOCATION: PLASMA MEMBRANE STRUCTURE: DOUBLE LAYER OF LIPIDS WITHIN WHICH PROTEINS ARE EMBEDDED FUNCTION: EXTERNAL CELL BARRIER AND ACTS IN TRANSPORT OF SUBSTANCES INTO & OUT OF THE CELL. EXTERNALLY FACING PROTEINS ACT AS RECEPTORS, TRANSPORT PROTEINS & IN CELL TO CELL RECOGNITION |
PLASMA MEMBRANE |
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LOCATION: CYTOPLASM STRUCTURE: RODLIKE, DOUBLE MEMBRANE STRUCTURES. INNER MEMBRANE FOLDED INTO PROJECTIONS CALLED CRISTAE FUNCTION: SITE OF ATP SYNTHESIS; POWERHOUSE OF THE CELL |
MITOCHONDRIA |
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LOCATION: CYTOPLASM STRUCTURE: DENSE PARTICLES CONSISTING OF TWO SUBUNITS, EACH COMPOSED OF RIBOSOMAL RNA & PROTEIN. FREE OR ATTACHED TO ROUGH ENDOPLASMIC RETICULUM. FUNCTION: THE SITES OF PROTEIN SYNTHESIS |
RIBOSOMES |
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LOCATION: CYTOPLASM STRUCTURE: MEMBRANOUS SYSTEM ENCLOSING A CAVITY, THE CISTERN, & COILING THROUGH THE CYTOPLASM. EXTERNALLY STUDDED WITH RIBOSOMES. FUNCTION: SUGAR GROUPS ARE ATTACHED TO PROTEINS WITHIN THE CISTERNS. PROTEINS ARE BOUND IN VESICLES FOR TRANSPORT TO THE GOLGI APPARATUS & OTHER SITES. EXTERNAL FACE SYNTHESIZES PHOSPHOLIPIDS. |
ROUGH ENDOPLASMIC RETICULUM |
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LOCATION: CYTOPLASM STRUCTURE: MEMBRANOUS SYSTEM OF SACS AND TUBULES; FREE OF RIBOSOMES FUNCTION: SITE OF LIPID & STEROID (CHOLESTEROL) SYNTHESIS, LIPID METABOLISM & DRUG DETOXIFICATION |
SMOOTH ENDOPLASMIC RETICULUM |
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LOCATION: CYTOPLASM STRUCTURE: STACK OF FLATTENED MEMBRANES & ASSOCIATED VESICLES CLOSE TO THE NUCLEUS FUNCTION: PACKAGES, MODIFIES & SEGREGATES PROTEINS FOR SECRETION FROM THE CELL, INCLUSION IN LYSOSOMES,& INCORPORATION INTO THE PLASMA MEMBRANE. THE "TRAFFIC DIRECTOR" OF THE CELL. |
GOLGI APPARATUS |
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LOCATION: CYTOPLASM STRUCTURE: MEMBRANOUS SACS OF CATALASE & OXIDASE ENZYMES. FUNCTION: THE ENZYMES DETOXIFY A NUMBER OF TOXIC SUBSTANCES. THE MOST IMPORTANT ENZYME, CATALASE, BREAKS DOWN HYDROGEN PEROXIDE. |
PEROXISOMES |
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LOCATION: CYTOPLASM STRUCTURE: MEMBRANOUS SACS CONTAINING ACID HYDROLASES FUNCTION: SITE OF INTRACELLULAR DIGESTION. CELL'S "DEMOLITION CREW" |
LYSOSOMES |
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LOCATION: CYTOPLASM STRUCTURE: CYLINDRICAL STRUCTURES MADE OF TUBULIN PROTEINS FUNCTION: SUPPORT THE CELL AND GIVE IT SHAPE. INVOLVED IN INTRACELLULAR AND CELLULAR MOVEMENTS. FORM CENTRIOLES, CILIA & FLAGELLA IF PRESENT |
MICROTUBULES |
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LOCATION: CYTOPLASM STRUCTURE: PROTEIN FIBERS; COMPOSITION VARIES FUNCTION: MOST STABLE & PERMANENT OF CYTOSKELETAL ELEMENTS & HAVE HIGH TENSILE STRENGTH. RESIST MECHANICAL FORCES ACTING ON THE CELL. |
INTERMEDIATE FILAMENTS |
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LOCATION: CYTOPLASM STRUCTURE: FINE FILAMENTS COMPOSED OF THE PROTEIN ACTIN FUNCTION: THINNEST ELEMENTS OF THE CYTOSKELETAL. INVOLVED IN CELL MOBILITY AND CHANGES IN CELL SHAPE. INVOLVED IN FORMING CLEAVAGE FURROWS DURING CELL DIVISION. HELP FORM THE CYTOSKELETON. |
MICROFILAMENTS |
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LOCATION: CYTOPLASM STRUCTURE: PAIRED CYLINDRICAL BODIES, EACH COMPOSED OF NINE TRIPLETS OF MICROTUBULES FUNCTION: PART OF THE CENTROSOME, ORGANIZING A MICROTUBULE NETWORK DURING MITOSIS (CELL DIVISION) TO FORM THE SPINDLE & ASTERS. FORM THE BASES OF CILIA & FLAGELLA. |
CENTRIOLES |
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LOCATION: CYTOPLASM STRUCTURE: VARIED CHEMICAL SUBSTANCES; INCLUDE STORED NUTRIENTS SUCH AS LIPID DROPLETS & GLYCOGEN GRANULES, PROTEIN CRYSTALS. PIGMENT GRANULES. FUNCTION: STORAGE FOR NUTRIENTS, WASTES & CELL PRODUCTS |
CELL INCLUSIONS |
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LOCATION: CELLULAR EXTENSIONS STRUCTURE: SHORT CELL SURFACE PROJECTIONS; EACH IS COMPOSED OF NINE PAIRS OF MICROTUBULES SURROUNDING A CENTRAL PAIR FUNCTION: COORDINATED MOVEMENT CREATES A UNIDIRECTIONAL CURRENT THAT PROPELS SUBSTANCES ACROSS CELL SURFACES. |
CILIA |
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LOCATION: CELLULAR EXTENSIONS STRUCTURE: LIKE CILIUM, BUT LONGER. ONLY EXAMPLE IN HUMANS IS THE SPERM TAIL FUNCTION: PROPELS THE CELL |
FLAGELLUM |
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LOCATION: CYTOPLASM STRUCTURE: TUBULAR EXTENSIONS OF THE PLASMA MEMBRANE; CONTAIN A BUNDLE OF ACTIN FILAMENTS. FUNCTION: INCREASE THE PLASMA MEMBRANE SURFACE AREA TREMENDOUSLY FOR ABSORPTION. |
MICROVILLI |
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STRUCTURE: LARGEST ORGANELLE. SURROUNDED BY THE NUCLEAR ENVELOPE; CONTAINS FLUID NUCLEOPLASM, NUCLEOLI & CHROMATIN. FUNCTION: CONTROL CENTER OF THE CELL; RESPONSIBLE FOR TRANSMITTING GENETIC INFORMATION & PROVIDING THE INSTRUCTIONS FOR PROTEIN SYNTHESIS. |
NUCLEUS |
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LOCATION: NUCLEUS STRUCTURE:DOUBLE MEMBRANE STRUCTURE PIERCED BY PORES. OUTER MEMBRANE CONTINUOUS WITH THE ENDOPLASMIC RETICULUM. |
NUCLEAR ENVELOPE
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LOCATION: NUCLEUS STRUCTURE: DENSE SPHERICAL (NON-MEMBRANE BOUNDED) BODIES, COMPOSED OF RIBOSOMAL RNA & PROTEINS. FUNCTION: SITE OF RIBOSOME SUBUNIT MANUFACTURE |
NUCLEOLUS
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LOCATION: NUCLEUS STRUCTURE: GRANULAR, THREADLIKE MATERIAL COMPOSED OF DNA & HISTONE PROTEINS FUNCTION: DNA CONSTITUTES THE GENES. |
CHROMATIN
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