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All living things are composed of cells with the same characteristics? Look at the illustrations of the models of animal and plant cells, realize that they have certain organelles in common and some not. Representation of the animal cell. Representation of the plant cell. Now that you have identified the organelles found only in plant cells, see that they have special functions. The plastid organelles are responsible for the synthesis of carbohydrates (sugars), being the most abundant chloroplast in the plant plastid. They have chlorophyll molecules that capture solar energy and, through chemical reactions produce molecules such as glucose, to be used by mitochondria to generate energy and stored in the form of ATP (adenosine triphosphate). Source: Vanderlay Calizotti. The chloroplasts are concentrated in regions of the plant exposed to more light and younger structures, such as leaves and stems. ACTIVITY With the help of his teacher, observe the chloroplasts in cells of Elodea sp, an aquatic plant easily found in stores that sell ornamental fish. Possession of a branch of Elodea sp, do the following: Highlight a piece of leaves, put on a glass slide, then place a drop of water, overlap the coverslip and observe under an optical microscope. After the observation, make a schematic drawing of the observed structures and compare FIGURES 1 and 2 on page 27. Organization of Living Things
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Sva živa bića su sastavljena od stanica s istim karakteristikama? Pogledajte ilustracija modela životinjskih i biljnih stanica, shvate da imaju određene organele zajedničko, a neki ne. Prikaz životinja stanice. Prikaz stanici domaćinu. Sada kada ste identificirali organele nalaze samo u biljnim stanicama, vidjeti da oni imaju posebne funkcije. U plastida organele su odgovorni za sintezu ugljikohidrata (šećera), biti najobilniji kloroplast u tvornici plastida. Oni imaju klorofila molekule koje bilježe sunčevu energiju i, kroz kemijske reakcije stvaraju molekule poput glukoze, kako bi se koristiti za proizvodnju energije mitohondrije i pohranjeni u obliku ATP (adenozin trifosfat). Izvor: Vanderlay Calizotti. U kloroplasta su koncentrirani u dijelovima biljke izloženi više svjetla i mlađih struktura, kao što su lišće i stabljika. AKTIVNOST Uz pomoć svog učitelja, poštujte kloroplasta u stanicama Elodea sp, vodena biljka lako naći u trgovinama koje prodaju ukrasne ribe. Posjedovanje ogranka Elodea sp, učinite sljedeće: Istaknite komad lišća, stavi na stakalce, a zatim stavite kap vode, preklopiti pokrovnim stakalcem i promatrati pod optičkim mikroskopom. Nakon promatranja, napraviti shematski crtež promatranih struktura i usporedite Slike 1 i 2 na stranici 27.. Organizacija živih bića