ADN Flashcards

1
Q

Que signifie l’acronyme ADN ?

A

Acide désoxyribonucléique

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2
Q

De quels éléments est composé l’ADN ?

A

Base nucléique
Groupement phosphate
Pentose (désoxyribose)

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3
Q

Citez les 4 bases nucléiques.

A

Adénine
Cytosine
Guanine
Thymine

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4
Q

L’adénine et la cytosine s’associent toujours entre elles.

Vrai
Faux
A

Faux, l’adénine s’associe toujours à la thymine.

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5
Q

Combien de gènes contient l’ADN humain ?

A

21000

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6
Q

A quoi servent les nucléotides ?

A

Ils codent pour les acides aminés.

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7
Q

Combien de nucléotides pour faire un acide aminé ?

A

3

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8
Q

Combien y a-t-il de codons ?

A

64

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9
Q

Quel codon termine la transcription d’un gène ?

A

C’est le codon stop.

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10
Q

Définissez la transcription.

A

La transcription est la recopie d’un brin d’ADN en ARN messager.

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11
Q

Comment s’appelle la base que l’on en retrouve que dans l’ARNm ?

A

C’est l’uracile.

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12
Q

Quelle enzyme est nécessaire pour la transcription ?

A

C’est l’’ARN polymérase.

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13
Q
A
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14
Q
A
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