Xorazm viloyati Urganch shahridagi 1-son maktabning 10

Sana : ________

Nazorat ishi -2.
Umumbiologik qonuniyatlarga doir masala va mashqlar yechish.

1-variant.

1.Bir zanjirda GGSSTTAAAGSTTSGA nukleotidlar ketma-ketligi bo`lgan DNK molekulasidagi vodorod bog`lar sonini aniqlang? __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

2. Tarkibida 400 ta aminokislota bo`lgan oqsillning molekulyar massasi qanchaga teng?(aminokislotalarning malekulyar massasi Mr=138 gr/mo’l) _________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

3. DNK molekulasining tarkibida 1320 ta adenin nukleotidi bor. Adenin nukleotidlari umumiy nukleotidlarning 33% ni tashkil qilsa, DNKning uzunligi necha nm bo’ladi? _________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

4. DNK molekulasining tarkibida 1222 adenin nukleotidi bor. Adenin nukleotidi umumiy nukleotidlarning 26%-ini tashkil qilsa, bu holda DNK ning tarkibida umumiy nukleotidlarning soni nechtaga teng ? ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

5. DNK molekulasi tarkibida (T) timin nukleotidi umumiy zanjirining 16% ni tashkil etadi .Qolgan nukleotidlarning har biri necha foizini tashkil qiladi ? ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________