Genetik IV
Quiz
•
Biology
•
9th - 12th Grade
•
Practice Problem
•
Medium
Stina Funder
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hvad hedder den overordnede rumlige struktur for DNA?
Alfa-helix
Dobbelt helix
Minor helix
Mayor helix
Answer explanation
DNA består af 2 strenge, der snor sig om hinanden - derfor kaldes det for en dobbelt helix.
Der findes ikke noget der hedder mayor eller minor helix. Men i DNA's struktur opstår der to "grøfter" når de snor sig om hinanden. Disse kaldes mayor groove og minor groove.
Alfa-helix er en proteinstruktur.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
På figuren er der vist et nucleotid, som DNA opbygges af.
Hvad hedder den del som er markeret med orange?
Phosphat-gruppe
Nitrogenholdig base
2-deoxyribose-gruppe
Aminosyre
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
På figuren er der vist et nucleotid, som DNA opbygges af.
Hvad hedder den del som er markeret med lilla?
Phosphat-gruppe
Nitrogenholdig base
2-deoxyribose-gruppe
Aminosyre
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
På figuren er der vist et nucleotid, som DNA opbygges af.
Hvad hedder den del som er markeret med grøn?
Phosphat-gruppe
Nitrogenholdig base
2-deoxyribose-gruppe
Aminosyre
Answer explanation
Aminosyrer er "byggestenene" i proteiner
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
DNA indeholder 4 forskellige nitrogenholdige baser. Disse danner fast par to og to. Dette kaldes baseparringsprincippet.
DNA basen thymin danner altid par med...
Guanin
Adenin
Cytosin
Answer explanation
Cytosin og guanin danner altid par. De binder til hinanden vha. 3 hydrogenbindinger.
Thymin og adenin danner altid par. De binder til hinanden vha. 2 hydrogenbindinger.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
DNA-strukturen snos omkring nogle proteiner for at danne kromosomer. Hvad hedder disse proteiner?
Histoner
Nucleosomer
Kromatider
Solenoider
Answer explanation
Proteinet er et histon.
DNA vikles om en samling af 8 histoner = nucleosom.
Nucleosomer samles til et stjerneformet solenoid.
Solenoiderne danner kromatinfiber.
Kromatinfiber foldes til kromosomer.
Den ene halvdel af et kromosom kaldes for kromatid.
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Proteiner er polymere.
Hvad er proteiner opbygget af?
Answer explanation
Proteiner er polymere - altså lange kæder opbygget af monomere.
Monomerene i proteiner er aminosyrer. Der findes 20 forskellige aminosyrer, som kan være enten polære, upolære eller elektrisk ladet. Disse egenskaber er med til at styre hvordan proteinet folder sig.
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