teoria celulara 2
TRANSCRIPT
![Page 1: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/1.jpg)
TEORIA CELULARADefinitie si caracteristiciStructura celulei si caracteristiciDiviziunea celularaQ&A
![Page 2: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/2.jpg)
Teoria celulara Notiunea de celula a fost formulata
pentru prima data de Robert Hooke, care, observand la microscopul fotonic o sectiune printr-o bucata de pluta, a desenat imaginea unei celule.
![Page 3: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/3.jpg)
1838 Matthias Schleiden evidentieaza celula animala
1839 Theodor Schwann evidentieaza celula vegetala
Cei doi savanti elaboreaza, independent TEORIA CELULARA
![Page 4: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/4.jpg)
Pluta vazuta la microscop
![Page 5: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/5.jpg)
Teoria celulara Toate organismele vii, de la bacterii la
om, sunt formate din celule; Celula este cea mai mica unitate
structurala si functionala a vietii Celula se naste dintr-o alta celula, se
reproduce pe sine si moare Celula este un laborator in miniatura
capabil de a acumula si transforma energia
![Page 6: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/6.jpg)
Teoria celulara Celulele sunt unitati vii, dinamice, care
realizeaza permanente schimburi de materie si energie cu mediul ambiant conservandu-si nealterate structura si functiilel
Celulele constituente ale organismelor pluricelulare ocmunica intre ele, realizandu-se astfel o coordonare functionala, o dezvoltare ordonata si integralitatea structurilor pe care le edifica
![Page 7: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/7.jpg)
Teoria celulara
Compozitia chimica a materiei vii
Substante Celula vegetala
Celula animala
Substante anorganice-apa-saruri minerale
75%2.6%
60%4%
Substante organice-glucide-lipide-proteine
18%0.5%4%
6%12%18%
![Page 8: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/8.jpg)
Structura celulei si caracteristici
In organismele vii, celulele se pot grupa dupa forma si functia pe care o indeplinesc intr-un anumit tesut
![Page 9: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/9.jpg)
Tipuri fundamentale de celule Sferice
![Page 10: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/10.jpg)
Tipuri fundamental de celule Cilindrice
![Page 11: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/11.jpg)
Tipuri fundamentale de celule Cubiforme
![Page 12: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/12.jpg)
Tipuri fundamentale de celule Fusiforme
![Page 13: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/13.jpg)
Tipuri fundamentale de celule Discoidale
![Page 14: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/14.jpg)
Tipuri fundamentale de celule Stelate
![Page 15: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/15.jpg)
Tipuri fundamentale de celule Dupa prezenta si numarul nucleilor
Celule anucleate Celule uninucleate Celule binucleate Celule plurinucleate
![Page 16: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/16.jpg)
Tipuri fundamentale de ceule Dupa structura
Procariote Eucariote
![Page 17: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/17.jpg)
Structura celulei Celula procariota
![Page 18: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/18.jpg)
Structura celulei Celula vegetala
![Page 19: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/19.jpg)
Structura celulei Celula animala
![Page 20: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/20.jpg)
Diviziunea celulara Inmultirea este insusirea de baza a
materiei vii care asigura perpetuarea acestia
Inmultirea celulelor se realizeaza prin diviziune si este precedata de o crestere a lor.
![Page 21: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/21.jpg)
Diviziunea celulara Diviziunea directa – amiotica Diviziunea indirecta – cariochinetica
![Page 22: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/22.jpg)
Diviziunea celulara Diviziunea meiotica
![Page 23: TEORIA CELULARA 2](https://reader033.vdocuments.net/reader033/viewer/2022061312/55721157497959fc0b8ece72/html5/thumbnails/23.jpg)
Diviziunea celulara Diviziunea mitotica