
Kromosoomid
Authored by Evi Piirsalu
Biology
9th Grade
Used 37+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mis on pärilikkus?
Järglastele pärandatakse domineeriva vanema tunnused.
Paljunemisel antakse edasi vanemate rakutuumad koos kromosoomidega.
Organismis säilitatakse ja antakse edasi geneetilist infot.
Paljunemisel kanduvad järglastele sarnasused vanematega.
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Mida kujutab endast DNA?
DNA on lühend sõnast ribonukleiinhape.
DNA on pärilikkusaine.
DNA koosneb kromosoomidest.
DNA molekul koosneb kahest keerdunud ahelast.
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Kuidas on seotud mõisted pärilikkusaine ja kromosoom?
Kromosoom ongi pärilikkusaine.
Kromosoom sisaldab parilikku informatsiooni.
Pärilikkusaine koosneb kromosoomidest.
Kromosoom koosneb pärilikkusaine molekulist, mis on valguga kokku pakitud.
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Kui palju kromosoome on inimese rakkude tuumades?
Sugurakkudes on kaks kromosoomi, x või y kromosoom?
Igas keharakkus on 23 kromosoomipaari.
Igas sugurakus on 23 kromosoomi.
Igas keharakus on 46 kromosoomi.
5.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Miks on DNA molekulid kokku pakitud?
DNA molekulid on lahti keerdunult rakust palju suuremad.
Kokku pakituna on DNA paremini kaitstud kahjulike mõjude eest..
Ilma kokku pakkimata koosneb DNA molekul ainult ühest ahelast.
Lahti pakitud DNA võib rakust väljuda, pärilikkus kaob.
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Mis on geenid ja milleks neid on vaja?
Geenid on spiraalselt keerdunud DNA ahelad.
Geen on DNA lõik, üks osa DNA molekulist.
Geen sisaldab infot ühe kindla valgu molekuli sünteesimiseks.
Kõikides rakkudes on erinevad geenid.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Miks ei avaldu geenide samasugune info organismi igas rakus?
Igas rakus on erinevad geenid; samasugune info puudub?
Rakus on aktiivsed ainult need geenid, mis on vajalikud selle raku talitluseks.
Samasugune info avaldub täiesti tervetel inimestel.
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