10-sinf Biologiya olimpiada №3 Oktabr 24, 2022Oktabr 24, 2022 da chop etilgan InfoMaster tomonidan 10-sinf Biologiya olimpiada №3 ga 6 fikr bildirilgan 0 123456789101112131415161718192021222324 10-sinf Biologiya olimpiada №3 2022-yil 13-oktabr: 2022-2023 o'quv yili tuman bosqichida tushgan savollar! 1 / 24 1. DNK fragmenti tarkibida jami 960 ta vodorod bog‘i mavjud. Adenin va timin orasidagi vodorod bog‘lar soni guanin va sitozin orasidagi vodorod bog‘lari soniga nisbati mos ravishda 1:1,5. Agar shu DNK tarkibidagi nukleotidlarning 25%i mutatsiyaga uchrab yo‘qolsa, DNK tarkibidagi mutatsiyadan keyingi nukleotidlar sonini nechtaga kamaygan? A) 125 B) 196 C) 210 D) 192 2 / 24 2. Bug‘doy donining rangi 2 ta noallel gen (A1 va A2) ta’sirida rivojlanadi. Qizil va oq rangli bug‘doylar o‘zaro chatishtirilsa, F2 da hosil bo‘lgan och qizil (a) va och pushti bug‘doylar (b) necha xil genotipga ega bo‘ladi? A) a-3; b-4 B) a-3; b-3 C) a-2; b-2 D) a-2; b-3 3 / 24 3. E.coli hujayrasining qaysi tuzilmasi nuklein kislotaga ega? 1) ribosoma; 2) yadro; 3) endoplazmatik to’r; 4) plastida; 5) go’lji; 6) plazmida; 7) sentriola A) 6, 7 B) 1.6 C) 3, 4 D) 2, 5 4 / 24 4. Tana massasi qancha (a) bo‘lgan odam bir kech-kunduzda asosiy moddalarni taminlash uchun 1920 kkal energiya sarflangan. Shu odam tana xarorati doimiyligini taminlash uchun bir sutkada 1400 kkal energiya sarflangan bo‘lsa, bu odam ozuqa moddalardan parchalangan energiyasi miqdori qancha (b) va to‘qim va organlarni hayotiy jarayonlarini taminlash uchun (c) qancha energiya sarflanadi? A) a-75 kg; b-3000 kkal; c-2000 kkal B) a-75 kg; b-3600 kkal; c-1200 kkal C) a-80 kg; b-4200 kkal; c-1400 kkal D) a-80 kg; b-4200 kkal; c-2800 kkal 5 / 24 5. Juft (a) va toq (b) ayirish organlariga ega bo‘lgan organizmlarni ko‘rsating. 1) letyaga; 2) kalmar; 3) ay-ay; 4) kanna; 5) bitiniya; 6) tridakna; 7) dafniya; 8) nereida; 9) dreysena; 10) perlovitsa; 11) semga. A) a-1,4, 7, 8,11; b-2, 3, 5, 6, 9, 11 B) a-1, 3,4,7,8, 11; b-2, 5, 6,9, 10 C) )a-1, 3, 7, 8; b-2,4, 5, 6, 9, 10, 11 D) a-1, 3, 4,7,8; b-2, 5, 6, 9,10, 11 6 / 24 6. Bevosita rivojlanadigan germafrodit organizmlarni (a) va bilvosita rivojlanadigan ayrim jinsli organizmlarni (b) ko‘rsating. 1) korall aspidi; 2) gelikonius; 3) chuchuk suv shillig‘i; 4) qizil chuvalchang; 5) aureliya; 6) perlovitsa; 7) povituxa; 8) nematoda A) a-4, 7; b-1, 8 B) a-2, 6; b-3, 5 C) a-1, 4; b-2, 6 D) a-3, 4; b-7, 8 7 / 24 7. Qaysi javobda aminokislotalar berilgan? A) triptofan, uratsil B) prolin, tirozin C) tirozin, mum D) fenilalanin, guanin 8 / 24 8. Qaysi javobda vabo kasalligi qo‘zg‘atuvchisiga xos xususiyat keltirilgan? A) transkripsiya jarayoni sitoplazmada amalga oshadi B) organik moddalarni anorganik moddalardan sintez qiladi C) DNK si gistonli oqsillar bilan kompleks hosil qiladi D) mitoxondriyalarida ATF sintezlanadi 9 / 24 9. Quyidagi organizmlarning diploid hujayrasida 2 va 5-juft gomologik xromosmolarining har biri bittaga kamaysa, ular kariotipida nechta xromosoma bo‘ladi? a) makkajo‘xori; b) suvarak; c) qalampir A) a-22; b-50; c-50 B) a-20; b-44; c-44 C) a-16; b-50; c-50 D) a-18; b-46; c-46 10 / 24 10. Tajriba maydonida seleksioner olim g‘o‘za o‘simligining tolalari oq va malla rangli xillarini chatishtirdi. F2 duragaylari 2192 tani tashkil qildi. Ular orasidan 548 tasi malla, 1104 tasi novvot rang, 540 tasi oq rangda bo‘ldi. Ushbu tajribada olingan novvot rangli duragaylarning nazariy jihatdan olinishi kerak bo‘lgan novvot rangli duragaylardan farqini toping. A) 8 ta kam B) 4 ta ko‘p C) 4 ta kam D) 8 ta ko‘p 11 / 24 11. Glukoza sintezlanishi (a) va oksidlanishi (b) bilan bog‘liq jarayonlarni aniqlang. 1) CO2 sarflanadi; 2) CO2 hosil bo‘ladi; 3) ATF energiyasi sarflanadi; 4) O2 sarflanadi; 5) ATF sintezlanadi; 6) O2 hosil bo‘ladi; 7) fotoliz jarayoni sodir bo‘ladi A) a – 1, 3, 6; b – 2, 4, 5 B) a – 2, 4, 5; b – 1, 3, 6, 7 C) a – 2, 3, 7; b – 1, 6, 7 D) a – 1, 5, 6; b – 2, 3, 4 12 / 24 12. Quyidagi organizmlarga tegishli to‘g‘ri ta’riflarni juftlang. a)parmeliya; b) batsidiya A) a - prokariot organizm; b - fototrof organizm B) a - eukariot organizm; b - bargsimon lishaynik C) a - eukariot organizm; b - yopishqoq lishaynik D) a - fototrof organizm; b - prokariot organizm 13 / 24 13. Qaysi javobda sershox qirqbo‘g‘imning jinssiz bo‘g‘iniga xos xususiyatlar keltirilgan? A) mustaqil oziqlanadi, zigota hosil qiladi B) fotosintez qiluvchi ildizpoyali o‘simlik C) tuxum hujayra hosil qiladi, poya-bargli o‘simlik D) spermatozoid hosil qiladi, gametofit hisobiga oziqlanadi 14 / 24 14. Shimpanze somatik hujayrasi mitoz siklining G2 davridagi DNK (a), xromosoma (b), hujayra markazi (c) va sentriolalar (d) sonini aniqlang. A) a-96; b-48; c-1; d-2 B) a-96; b-48; c-2; d-4 C) a-96; b-96; c-2; d-2 D) a-48; b-48; c-1; d-2 15 / 24 15. Autotrof oziqlanish xususiyatiga ega prokariot (a) va eukariot (b) organizmlarni aniqlang. 1) ossillatoriya; 2) oltingugurt bakteriyasi; 3) pichan bakteriyasi; 4) uchqat; 5) nitella; 6) volvoks; 7) midiya; 8) floks; 9) perlovitsa A) a-2, 3; b-6, 7, 8 B) a-2; b-5, 8 C) a-3; b-7, 9 D) a-1, 2, 5; b-4, 8 16 / 24 16. Maltoza va saxarozaning umumiy xususiyatlarini ko‘rsating. 1) glikozid bog‘larga ega; 2) tarkibiga fruktoza kiradi; 3) suvda yaxshi eriydi; 4) qand lavlagi shakari hisoblanadi A) 1, 4 B) 1, 3 C) 2, 4 D) 2, 3 17 / 24 17. Gastrula jarayoni blastula devorining qat-qat joylashuv yo‘li bilan amalga oshadigan sovuqqonli organizmlarni aniqlang. 1) iguana; 2) kivi qushi; 3) alligator; 4) tustovuq; 5) lira qushi; 6) emu; 7) nandu; 8) xameleon. A) 4, 6 B) 2, 3 C) 5, 7 D) 1, 8 18 / 24 18. Qanday jarayonda quyidagi reaksiya amalga oshadi? ATF + H2O → ADF + H3PO4 + energiya (40 kJ) A) bir molekula glukozadan 2 molekula sut kislotasi hosil bo‘lishi B) kislorodli sharoitda sut kislotasining to‘liq parchalanishi C) fotosintez jarayonining yorug‘lik bosqichi D) membrana orqali moddalarning aktiv transporti 19 / 24 19. Ko‘sak mevaga ega bo‘lgan oddiy gulqo‘rg‘onli o‘simliklarni aniqlang. 1) oqquray; 2) chuchmoma; 3) boychechak; 4) lola; 5) bangidevona; 6) g‘o‘za. A) 2, 6 B) 5, 6 C) 2, 3 D) 1, 3 20 / 24 20. Odam organizmidagi timozin garmoniga xos bo‘lgan xususiyatlarni aniqlang? a) organizmda pigment almashinuvni boshqaradi; b) jinsiy bezlarni funksiyasini pasaytiradi; c) limfosit hosil bo‘lishini kuchaytiradi va immunitetni oshiradi; d) qon tomirlarini toraytirib, qon bosimini oshiradi; organizmda kalsiy-fosfor almashinuvini boshqaradi; f) bolalar o‘sishiga ijobiy ta’sir ko‘rsatadi. A) d, e, c B) a, d, e C) b, c, f D) a, b, f 21 / 24 21. Sariq silliq donli (AaBb) no‘xatlarda tahliliy chatishtirish o‘tkazilganda qanday natijalar olinadi? 1) har ikki belgi bo‘yicha dominant genga ega organizmlar 50%ni tashkil qiladi; 2) fenotip bo‘yicha nisbat 1:1:1:1 bo‘ladi; 3) organizmlarning 1/4 qismi ikkinchi belgi bo‘yicha retsessiv gomozigota bo‘ladi; 4) genotip bo‘yicha ota-onaga o‘xshash organizmlar 50%ni tashkil qiladi; 5) dominant digomozigota organizm hosil bo‘ladi A) 2, 3 B) 2, 4 C) 1, 2 D) 3, 5 22 / 24 22. Himoya funksiyasini bajaruvchi oqsilni aniqlang. A) kollagen B) antitana C) amilaza D) polimeraza 23 / 24 23. Yeryong‘oq va yerbag‘ir tugmachagulga tegishli umumiy tushunchalarni aniqlang. 1) murakkab barg; 2) hujayra devoriga ega; 3) quruq meva; 4) qiyshiq gul; 5) fitosenoz vakili; 6) murakkab gulqo‘rg‘on A) 1, 2, 4 B) 3, 4, 6 C) 1, 5, 6 D) 2, 3, 5 24 / 24 24. Oddiy amyoba (a), nursimonlar (b), yashil evglena (c), tufelka (d) uchun xos bo‘lgan xususiyatlarni aniqlang. 1) bakteriyalar, mayda suv o‘tlari va organik qoldiqlar bilan oziqlanadi; 2) xromatoforidagi xlorofill pigmenti yordamida fotosintez qiladi; 3) qisqaruvchi vakuolaga ega; 4) kremniy skeletli; 5) hazm qilish va ayirish organoidlari nisbatan murakkab tuzilgan A) a-4; b-1, 5; c-1, 3; d-2 B) a-3; b-4; c-2; d-5 C) a-1, 2; b-4; c-5; d-3 D) a-2; b-4, 5; c-1, 2; d-3 0% Testni qayta ishga tushiring Author: InfoMaster Biologiya olimpiada
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