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Biologia Moleculara - Totalizare 1 - Tema 6

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John Ion
Quiz by John Ion, updated more than 1 year ago
John Ion
Created by John Ion about 3 years ago
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Question 1

Question
Selectati particularitatile heterocromatinei:
Answer
  • Are un aspect mai putin dens in microscopia electronica
  • Reprezinta un nivel inalt condensat al ADN-ului
  • Contine secvente ADN transcrise continuu
  • Este sediul procesului de transcriptie
  • Este situata catre centrul nucleului

Question 2

Question
Identificati componentele moleculare ale eucromatinei:
Answer
  • Proteine histone
  • Proteine nonhistone
  • ADN codant
  • ADN necodant
  • Secvente ADN transcrise

Question 3

Question
Selectati caracteristicile heterocromatinei:
Answer
  • Este slab colorata
  • Contine ADN telomeric
  • Este inactiva genetic
  • Se replica la inceputul fazei S
  • Contine ADN repetitiv

Question 4

Question
Selectati proteinele non-histone:
Answer
  • H+-ATPaza
  • Peptidil-transferaza
  • Telomeraza
  • Lipaza
  • ARN-polimeraza

Question 5

Question
Selectati functiile centromerului:
Answer
  • fixarea microtubulilor
  • impiedica fuzionarea cromozomilor
  • unirea cromatidelor surori
  • protectia ADNului cromozomial de exonuleaze
  • protectia ADNului cromozomial de endonucleaze

Question 6

Question
Identificati componentele nucleolului:
Answer
  • ARNt
  • ADN
  • Proteine
  • ARNr
  • ARNm

Question 7

Question
Nucleul lipseste in:
Answer
  • Celule epiteliale
  • Hematii adulte
  • Neuroni
  • Hepatocite
  • Fibroblasti

Question 8

Question
Selectati heterocromatina:
Image:
Image (binary/octet-stream)
Answer
  • 3
  • 4
  • 2
  • 1
  • 5

Question 9

Question
Selectati structura responsabila de trasportul macromoleculelor:
Image:
Image (binary/octet-stream)
Answer
  • 8
  • 1
  • 5
  • 2
  • 3

Question 10

Question
Selectati componentele cromatinei:
Answer
  • Histone
  • ATP
  • Nehistone
  • ADN
  • ARN

Question 11

Question
Selectati forma de prezentare a genei Riboforinei in nucleele diferitor celule:
Answer
  • Heterocromatina constitutiva
  • Nivelul III de compactizare ADN
  • Nivelul II de compactizare ADN
  • Eucromatina
  • Heterocromatina facultativa

Question 12

Question
Selectati eucromatina:
Image:
Image (binary/octet-stream)
Answer
  • 4
  • 6
  • 5
  • 1
  • 9

Question 13

Question
Selectati functia lamininei:
Answer
  • Asigura forma si integritatea nucleului
  • Participa la asamblarea microtubulilor
  • Reprezinta proteine globulare
  • Asigura diviziunea mitocondriei
  • Controlul compactizarii ADN

Question 14

Question
Selectati forma de prezentare a genei ARNr 28S in nucleele diferitor celule:
Answer
  • Heterocromatina constitutiva
  • Nivelul III de compactizare ADN
  • Heterocromatina facultativa
  • Eucromatina
  • Nivelul II de compactizare ADN

Question 15

Question
Selectati proteinele nucleosomului:
Answer
  • H2A
  • H2B
  • H4
  • H3
  • H2C

Question 16

Question
Selectati functiile laminei fibroase:
Answer
  • Intervine in controlul ciclului celular
  • Pastrarea integritatii nucleului
  • Pastrarea informatiei genetice
  • Fixarea cromatinei in timpul mitozei
  • Asigura functionarea complexului porului

Question 17

Question
Selectati secventele ADN nuclear active in toate celulele:
Answer
  • Gena Val-ARNt
  • Gena H1
  • Gena ARNr18S
  • Gena insulinei
  • Gena Opsinei

Question 18

Question
Selectati forma de prezentare a ADN-ului nuclear:
Answer
  • Secvente ADN necodante
  • Secvente ADN repetitive
  • Secvente ADN transcrise continuu
  • Secvente ADN unice
  • Doar secvente ADN codant

Question 19

Question
Selectati proteina internucleosomala:
Image:
Image (binary/octet-stream)
Answer
  • D
  • A
  • C
  • B
  • E

Question 20

Question
Alegeti componentele nucleului:
Answer
  • ATP-sintetaze
  • nucleoporine
  • nucleoline
  • topoizomeraze
  • lamine A, B si C

Question 21

Question
Selectati particularitatile porilor nucleari:
Answer
  • Asigura transportul substantelor intr-o singura directie
  • Difera ca numar in functie de tipul celulei
  • Interactioneaza cu lamina fibroasa
  • Asigura contactul nucleului cu citoplasma
  • Sint formati din trei straturi lipo-proteice

Question 22

Question
Selectati nucleozomul:
Image:
Image (binary/octet-stream)
Answer
  • 3
  • 4
  • 2
  • 5
  • 1

Question 23

Question
Selectati caracteristicile proteinelor histone:
Answer
  • cu sarcina electrica -
  • au proprietati acide
  • cu sarcina electrica +
  • au proptietati bazice
  • foarte heterogene

Question 24

Question
Identificati litera ce corespunde nucleosomului:
Image:
Image (binary/octet-stream)
Answer
  • D
  • B
  • A
  • F
  • C

Question 25

Question
Selectati deosebirile eu- si heterocromatinei:
Answer
  • Activitatea genetica
  • Compozitia chimica
  • Gradul de condensare
  • Tipuri secvente ADN
  • Intensitatea colorarii

Question 26

Question
Selectati componenta responsabila de sinteza RNP80S:
Image:
Image (binary/octet-stream)
Answer
  • 4
  • 2
  • 1
  • 7
  • 5

Question 27

Question
Identificati procesele realizate in nucleu:
Answer
  • Processing-ul
  • Reparatia
  • Replicarea
  • Transcriptia
  • Translatia

Question 28

Question
Alegeti pocesele realizate in nucleol:
Answer
  • Translatia
  • Reparatia
  • Processing-ul
  • Replicare
  • Transcriptia

Question 29

Question
selectati secventa ADN eucromatic:
Answer
  • ADN telomeric
  • CRomozomul metafazic
  • Filamentul polinucleosomic
  • Buclele
  • fibra de solenoid

Question 30

Question
Selectati proteinele nucleare:
Answer
  • Matrine
  • Catalaza
  • H2B
  • ADN-polimeraza
  • ARN-polimeraza

Question 31

Question
Selectati caracteristica eucromatinei:
Answer
  • Neaccesibila pentru ARN-polimeraza
  • Contine secvente ADN inalt repetitive
  • Componenta a capetelor cromozomilor
  • Contine secvente ADN unice
  • Reprezinta filamentul de 30 nm

Question 32

Question
Selectati forma de prezentare a genei Leu-ARNt in nucleele diferitor celule:
Answer
  • Nivelul II de compactizare ADN
  • Eucromatina
  • Heterocromatina facultativa
  • Nivelul III de compactizare ADN
  • Heterocromatina constitutiva

Question 33

Question
Selectati componentele cromatinei:
Answer
  • proteine
  • ADN
  • ARN
  • lipide
  • oligozaharide

Question 34

Question
Identificati componentele moleculare ale cromozomullui metafazic:
Answer
  • Proteine histone
  • Proteine nonhistone
  • Proteine ribozomale
  • ADN necodant
  • ADN codant

Question 35

Question
Selectati procesul caracteristic nucleului:
Answer
  • Sinteza riboforinei
  • Asamblarea RNP80S
  • Processingul ARN
  • Sinteza proteinelor ribozomale
  • Decodificarea IG

Question 36

Question
Selectati secventele ADN nuclear active numai in anumit tip de celule:
Answer
  • Gena Riboforinei
  • Gena Met-ARNt
  • Gena insulinei
  • Gena Opsinei
  • Gena ARNr28S

Question 37

Question
Selectati proteina internucleosomala:
Answer
  • H2A
  • H4
  • H1
  • H2B
  • H3

Question 38

Question
Identificati componentele moleculare ale heterocromatinei:
Answer
  • ADN codant inactiv
  • Secvente ADN transcrise
  • ADN necodant
  • Proteine nonhistone
  • Proteine histone

Question 39

Question
Selectati octamerul histonic:
Image:
Image (binary/octet-stream)
Answer
  • 2
  • 8
  • 6
  • 9
  • 1

Question 40

Question
Selectati functia nucleolului:
Answer
  • Codifica IG pentru sinteza ARNr
  • Codifica IG pentru sinteza ARNt
  • Biogeneza ribozomilor
  • Sinteza proteinelor
  • Sinteza nucleoporinelor

Question 41

Question
Identificati litera ce corespunde solenoidului:
Image:
Image (binary/octet-stream)
Answer
  • A
  • B
  • C
  • D
  • E

Question 42

Question
Selectati componentele cromatinei:
Answer
  • Proteine
  • Cromozom
  • ADN
  • Lipide
  • ARN

Question 43

Question
Selectati macromoleculele exportate din nucleu:
Answer
  • ADN
  • RNP40S
  • Proteine histone
  • ARNm
  • ARNt

Question 44

Question
Selectati secventele centromerului:
Answer
  • secvente de ADN necodant
  • secvente ADN unic
  • segmente de heterocromatina
  • segmente de eucromatina
  • secvente de ADN codant

Question 45

Question
Selectati particularitatea specifica genei Opsinei:
Answer
  • Se transcrie in toate tipurile de celule
  • Reprezinta secvente ADN moderat repetitiv
  • Se transcrie numai in anumit tip de celule
  • Se transcrie in mitocondrii
  • Reprezinta secvente ADN inalt repetitiv

Question 46

Question
Selectati caracteristicile anvelopei nucleare:
Answer
  • Prezenta in nucleul interfazic
  • Porii nucleari au structura lipoproteica
  • Continua cu membranele reticulului endoplasmatic neted
  • Contine doua membrane
  • Pe suprafata anvelopei nucleare se contin ribozom

Question 47

Question
Selectati componentele nucleului:
Answer
  • cardiolipine
  • ARN
  • ADN
  • Proteine histone
  • Proteine nehistone

Question 48

Question
Selectati proteinele nehistone:
Answer
  • proteinele aparatului de transcriptie
  • enzimele aparatului de translatie
  • enzimele aparatului de procesare a ARNului
  • proteinele scaffoldului
  • enzimele aparatului de replicare

Question 49

Question
Identificati nivelele de compactizare a materialului genetic nuclear:
Answer
  • Solenoid
  • Cromozom metafazic
  • Bucle de cromatina
  • Nucleosom
  • Nucleol
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