Acizii nucleici Flashcards

1
Q

Acizii nucleici sunt (ADN+ ARN

A

molecule foarte mari(alc din NUCLEOTIDE)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

O nucleotida este alc din

A

o molecula glucidica+o gr fosfat +o molecula ce contine azot(baza azotata-pr bazice)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

ADN ul este gasit

A

in cei 46 cromozomi din nucleoul celulei (mat din care sunt formate genele)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

ARN ul se gaseste in

A

nucleol,nucleu,citoplasma celuleor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

ADN+ARN==>

A

sinteza proteinelor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

ADN ul contine

A

=glucida cu 5 atomi de C=dezoxiriboza

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

ARN ul contine

A

riboza

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

ADN & ARN contin

A

grupari fosfat(leaga gr dezoxiriboza sau riboza una de cealalta in lantul nucleotidica=SCHELETUL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Acizii contin bazele

A

adenina,guanina si citozina

  • ADN=timina
  • ARN=uracil
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Adenina+guanina sunt

A

molecule purinice

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Citozina+timina+uracil

A

molecule pirimidinice

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

MOdelul Watson -Crick au propus modelul

A

alc din 2 lanturi de nucleotide cu bazele indreptate spre interior (treptele unei scari)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Guanina+citozina

Adenina +timina sunt

A

complementare

principiul complememntaritatii bazelor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Cele doua lanturi se impletesc pt a forma

A

un dublu helix

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Bazele lanturilor sunt mentinute impr prin

A

leg slabe de hidrogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

inainte sa se divida celula

A

adn se replica(se replica cei 46 de cromozomi)

17
Q

replicarea adn ului incepe cand

A

enxime specializate desfac dublul helix

18
Q

ATP

A

o nucleotida din ARN + gr fosfat (sursa energetica pt organism)

19
Q

ATP ul se formeaza

A

ut energie din moleculele alim prin respiratia celulara si alim functinoarea organismului prin elib unei gr fosfat