orgánulos celulares
TRANSCRIPT
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Orgánulos celulares
Outro mediodía en Célula" de
María Eugenia Scioli
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Nacho V
• UNIDADE 8 Orgánulos celulares I
• 1.1 Explica as características e misións do hialoplasma, citando as funcións e os elementos compoñentes do citoesqueleto..
• 2.1 Sinala as características xerais, a estrutura e as funcións do retículo endoplasmático e do aparato de Golgi.• 3.1 Describe a orixe, a morfoloxía e a clasificación dos lisosomas e explica a natureza e a relación dos peroxisomas co metabolismo
celular.• 5.1 Sinala a composición química, a estrutura e a función dos ribosomas, os centriolos, os cilios, os flaxelos e as inclusións.• UNIDADE 9 orgánulos celulares II
1.1 Coñece a morfoloxía e a comparación química do núcleo, a actividade metabólica do núcleo interfásico e as circunstancias que fan que unha célula entre em división.
• 2.1 Analiza a ultraestrutura e a función da cuberta nuclear, describindo a estrutura dun poro nuclear (complexo do poro), e sinala as características ficicoquímicas do nucleoplasma.
• 3.1 Explica as características da cromatina, a súa composición química, a súa ultraestrutura e a forma de presentarse nonucleoplasma, sinalando a relación cromatina/cromosomas.
• 4.1 Describe as características morfolóxicas do nucleolo, a súa composición química e da súa función.• 5.1 Coñece a natureza dos cromosomas, a súa estrutura. A súa ultraestrutura. A súa clasificación e a terminoloxía relacionada con eles.• 6.1 Describe as características, morfoloxía, estruturas e compoñentes das mitocondrias e sinala a súa función metabólica.• 6.2 Diferencia os distintos tipos de plastos, as súas relacións e as súas respectivas funcións metabólicas, analizando a morfoloxía dos
cloroplastos em comparación coas mitocondrias.
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Orgánulos celulares
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Orgánulos celulares
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( CITOXEL estado viscoso)
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Orgánulos non membranosos
• Citoesqueleto
• Ribosomas
• Centriolos
• Citosol
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Orgánulos non membranosos Citoesqueleto:
• Microtúbulos de tubulina:formación de estruturas,
transporte de macromoléculas, orientación e mobilidade celular
• Microfilamentos de actina:contración muscular e mitose
• Filamentos intemedios: proteción e función estrutural
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ORGÁNULOS NON MEMBRANOSOS
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Parede do cilindro de 13 subunidades =protofilamentos=
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microfilamentos
microtúbulos
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Febras trenzadas en hélice estabilizadas con ATP e ións
calcio
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Ex
• F. queratina células epiteliais
• Neurof. neurona
• F. desmina cél musculares
• F. vimetina tecido conxuntivo
• F. gliais cél glía
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TelofaseTelofase
CENTRÍOLOS E MITOSEProfase: comeza a formarse o fuso acromatico
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-Undulipodios-
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9+0
Corpusculo basal =cinetosoma
Zona de transicion
Talo ou axonema
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Parede do cilindro de 13 subunidades =protofilamentos=
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FLAXELOS BACTERIANOS:proteina flaxelina
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Orgánulos-estruturas non membranosas
• 1.Ribosomas
• 2.Centríolos.
• 3.Cilios e flaxelos.
• 4.Inclusións
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Orgánulos-estruturas Non Membranosas: 4.Inclusións
• Con ou sen membrana.
• Depositos de reserva ou substancias desfeito:
a.Autótrofos: acúmulos lipídicos, gotas aceite, látex.
b.Heterótrofos: gotas lipídicas, gránulos de glicóxeno.
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Sistemas endomembranas
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Célula eucariota vexetal
Sistemas endomembranas
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Orgánulos membranosos non enerxéticos: Lisosomas
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Orgánulos membranosos enerxéticos
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Plastos ou plastidios
• Cromoplastos: rodoplastos, cloroplastos
• Leucoplastos
• Amiloplastos
• Proteoplastos.
• Oleoplastos.
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Plastos ou plastidios• Cromoplastos: cloroplastos
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Cloroplastos: Formas en diferentes algas
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Lembra:
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Célula animal
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