XXXIV. Aminokislotalar va oqsillar. Ularning xossalari 1.Aminokislotalarda qanday funksional guruh bor?
A) –NO2, -COOH B) –NH2, -COOH C) –OH, NH2 D) –COH, -NO2 2. Quyidagi formulani nomlang. CH3-CH(NH2)-C(O)-OH
A) fenilalanin B) anilin C) alanin D) lizin
3. Glutamin kislotasining formulasini ko’rsating.
A) HO-C(O)-CH2-CH2-CH(NH2)-C(O)-OH B) HO-CH2-CH(NH2)-C(O)-OH
C) HS-CH2-CH(NH2)-C(O)-OH D) CH3-CH(NH2)-C(O)-OH
4. Aminokislotalar asosan qanday olinadi?
A) aminlarga karbon kislotalar ta’sir etib B) oqsillarni gidrolizlab C) kraxmalni gidrolizlab
D) nitrobirikmalarga ishqor ta’sir ettirib
5. Gistionin qanday kasallikni davolashda ishlatiladi?
A) asab kasalliklarini davolashda B) yurak kasalliklarida C) shamollashda
XXXV. Yuqori molekular birikmalar 1.YMB kelib chiqishi bo’yicha nechaga bo’linadi?
A) 2 B) 3 C) 4 D) 5
2. YMB qanday bog’lar orqali bog’langan?
A) kovalent B) ion C) donor-akseptor
3. Qaysi yuqori molekular birikma polikondensatsiya reaksiya natijasida olinishini toping.
A) butadiyen kauchuk B) fenolformaldegidsmola C) polipropilen D) polivinilxlorid
4. Polivinilxloridning polimerlanish darajasi 980 ga teng bo’lsa, polimer massasini toping.
A) 12200 g B) 61250 g C) 6000 g D) 10000 g
5. Polibutadiyen polimerlanish darajasi 1020 ga teng bo’lsa, polimerning massasini toping.
A) 55080 g B) 5000 C) 61250 g D) 55060 g
