Cours 11 concept generaux part 1 Flashcards

1
Q

Avant la division cellulaire(mitose ou meiose), la cellule devra…

A

La cellule devra copier son materiel genetique.

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2
Q

Qu;est ce qui se deroule pendant la phase S

A

Dans la phase S de l’interphase, la replication de l’adn se deroule

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3
Q

Organismes pluricellulaires peuvent faire 2 type de divisions cellulaires:

A

Mitose et meiose

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4
Q

Defintion de la mitose

A

Mode de division des cellules somatiques

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5
Q

Definition du mot somatique

A

Toute les cellules du corps sauf, les cellules sexuelles. Sont diploide

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6
Q

Defintion de la meiose

A

Type de division qui permet d’avoir les cellules germinales

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7
Q

Definition du mot germinales

A

Cellules sexuelles=gametes

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8
Q

Dans les cellules diploides, on retrouve combien de paires de chromosomes?

A

On retrouve 23 paires de chromosome homologues, 1 serie du pere et l’autre de mere

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9
Q

Qu’est ce qui ce passe lors de la replication de l’adn

A

Les chromosomes sont recopier. La replication mene a la creation de chromosomes avec 2 parties identiques.

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10
Q

Comment se nomme les chromosomes avec 2 parties identiques

A

Chromatides soeurs

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11
Q

Structure des chromatides soeurs

A

Des batonnets d’adn identiques attacher par le centromere.

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12
Q

Definition d’haploide

A

Comporte un seul jeu de chromosomes( n = 23)

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13
Q

Definition de diploide

A

Comporte deux jeu de chromosomes homologues en paire ( 2n = 46)

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14
Q

Gamete

A

Cellule sexuelle. C’est haploide

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15
Q

Zygote

A

Premiere cellule d’un nouvel individu cree par l’union de deux gametes. C’est diploide.

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16
Q

Cycle

A

Gamete haploide= MEIOSE = Diploide= FECONDATION = Zygote diploide = MITOSE ET DEVELOPPEMENT