La célula - Cell 1. Valorar la importancia de la teoría celular. 2. Conocer la célula y sus componentes (estructura). a)Membrana : control de intercambio e interacción. b)Citoplasma : orgánulos celulares. c)Núcleo: la información genética (ADN). 3. Conocer las funciones celulares. a)La función de los orgánulos celulares. 4. Tipos de células: a)Procariota y eucariota. b)Animal y vegetal. 5. La división celular: a)Mitosis b)Meiosis OBJETIVOS:
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La celula: la teoría celular, estructura y función. La división celular
Teoría celular, cell theory Estructura celular: membrana, citoplasma y núcleo. Membrane, cytoplasm and nucleus Orgánulos celulares, organelles. Mitosis y meiosis
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La célula - Cell
1. Valorar la importancia de la teoría celular.
2. Conocer la célula y sus componentes (estructura).a) Membrana: control de intercambio e interacción.b) Citoplasma: orgánulos celulares.c) Núcleo: la información genética (ADN).
3. Conocer las funciones celulares.a) La función de los orgánulos celulares.
4. Tipos de células:a) Procariota y eucariota.b) Animal y vegetal.
5. La división celular:a) Mitosisb) Meiosis
OBJETIVOS:
CONTENIDOS:
1. Teoría celular2. Funciones de la célula:
a) Nutrición.b) Relación.c) Reproducción.
3. Tipos de células
4. La célula eucariota:a) Estructura.b) Orgánulos celulares y función,
5. La reproducción:a) Mitosisb) Meiosis
Cell theory
• Robert Hooke – first person to see cell (1665) • Leeuwehoek – first person to see living cells in pond water (1673)• Schwann – zoologist who observed tissues of animals had cells (1839)• Schleiden – botanist, observed tissues o plants contained cells (1845)• Virchow – reported that every living thing is made of vital units, known as cells (1850)• Remak - discovers cell division and affirm that cells come only from pre-existing cells.
1. All living things are made of cells
Longitudinal section of a root tip of Maize (Zea mays) by Science and Plants for Schools on Flickr (CC) http://flic.kr/p/bNNM6M
Unicellular organisms are single-celled and can carry out all of the functions of life independently.
Multicellular organisms have specialized cells to carry out specific functions.
WHAT´S A CELL?A cell is the smallest unit that is capable of performing life functions
Nutrition
Reproduction
Responsiveness
Cell Structure• All Cells have:
an outermost plasma membrane
cytoplasm, the region where chemical reactions take place. Comprises cytosol and the organelles.
genetic material in the form of DNA
Cell Structure
• All Cells have:an outermost plasma membrane
• Structure – phospholipid bilayer with embedded proteins
• Function – isolates cell contents, controls what gets in and out of the cell, receives signals
Cell Structure
• All Cells have:genetic material in the form of DNA
• Eukaryotes – DNA is within a membrane (nucleus)
• Prokaryotes – no membrane around the DNA (DNA region called nucleoid)
Cell Structure
• All Cells have:cytoplasm with organelles
• Cytoplasm – fluid area, gel-like, inside outer plasma membrane and outside DNA region
• Organelles – is a specialized subunit within a cell that has a specific function, and it is usually separately enclosed within its own lipid membrane
Eukaryotes cellscells that contain nuclei
Eukaryotic Cells• Structures in all eukaryotic cells
MEIOSISDivisión por meiosis – Manuel Antonio Medina http://www.juntadeandalucia.es/averroes/manuales/materiales_tic/Cell_anim_archivos/Cell_anim_archivos/meiosis_Medina.swf
Stages of meiosis – McGraw-Hillhttp://www.juntadeandalucia.es/averroes/manuales/materiales_tic/Cell_anim_archivos/Cell_anim_archivos/meiosisMcGraw.swf
Fases de la meiosis – John Kyrkhttp://www.johnkyrk.com/meiosis.html