Reproducere celulara. Amitoza.Mitoza Flashcards

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1
Q

Care sunt cele 2 tipuri de reproducere celulara ?

A

Diviziunea directa-amitoza, si diviziunea indirecta mitoza si meioza

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2
Q

Ce reprezinta ciclul celular?

A

Viata unei celule de la o diviziune la alta

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3
Q

Ce este fusul de diviziune?

A

o structura specifica celulei eucariote,ce are ca scop separarea cromatidelor, ce vor face parte din celulele fiice sau gameti

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4
Q

Care sunt etapele interfazei?

A

et. presintetica,sintetica,postsintetica

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5
Q

Prin ce se caracterizeaza amitoza?

A

nu se produce spiralizarea cromozomului, nu se formeaza fusul de diviziune, invelisul nuclear nu dispare

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6
Q

ce are loc in etapa presintetica?

A

celula se pregateste pentru replicarea ADN,se sintetizeaza ARN si enzimele necesare

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7
Q

ce s eintampla in et.sintetica?

A

are loc despiralizarea ADNului, si informatia ereditara se transmitede la celula mama la celula fiica

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8
Q

et.postintetica?

A

se acumuleaza ATPul,se sintetizeaza proteinele,se reduplica centriolii

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9
Q

ce reprezinta mitoza?

A

reproducerea asexuata a celulelor somatice

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10
Q

Care sunt fazele mitozei?

A

profaza,metafaza,anafaza,telofaza

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11
Q

Ce se intampla in profaza?

A

dispare membrana celulara si cromozomii se afla direct in citoplazma

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12
Q

Ce se intampla in metafaza?

A

Cromozomii se leaga de firele fusului ded diviziune, drept ecuatorial

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13
Q

Ce se intampla in anafaza?

A

firele fusului de diviziune s econtracta tragand cromozomii spre poli

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14
Q

Ce are loc in telofaza timpurie?

A

Are loc cariokineza(dividerea nucleului) si citokineza(dividerea citoplamsmei

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15
Q

Ce se intampla in telofaza tarzie?

A

se formeaza 2 celule diploide identice cu celula mama

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16
Q

care este importanta mitozei?

A

Este acel proces care asigura regenerarea tesuturilor, precum si cresterea si dezvoltarea