Cho em hỏi về chu trình krebs

chao ban, minh la member moi cua forum:mrgreen:
thay ban thek mek cai ny dung ngay cho ngua':oops:nin tra loi cho ban na`
1. CT krebs chi xay ra trong ty the(mitochrondria) vi chi trong ty the(chinh xac la tren mang trong ty the) moi co cac enzym can cho CT C3(CT Krebs) vi du nhi cac enzym cua he thong cytocrom dam nhn chuc nnag chuyen dien tu qua Fe2+/Fe3+ --->Cu+/Cu2+ cui cung la gap oxy khong khi de tao nuoc,hoac nhu chat nhan 2H tu co chat chua H(nguyen lieu cho CT C3) vi du axit piruvic la coenzym Q10. trong chu trinh ny` chi co 3 vi tri tao duoc ATP la`: tu NAD/NADH,H+ --->FAD/FADH2, tu cytB--->cytC va cyta,a3 --->O2khong khi.noi chung dai dong z nhung ly do chu yeu la he thong enzym can cho CT o mang trong ty the. nguyen nhan la trong su tien hoa khi te bao "thuc bao`" 1 vi khuan hieu khi nhung khong tieu hoa ma` vk ny` tro thanh "nha` may nang luong" te bao
2.cac coenzym la 1 bo phan cua enzym nhung no ko phai la thanh` phan` dac trung cho enzym,nen nhieu enzym co the co cung 1 coenzym,con ve cach goi ten coenzym thi no theo cong thuc hoa hoc cua no cai ny` phai hoc thuoc thui:xinkieu:nhung thuc ra thi chi can` nho 1 so coenzym tham gia cac phan ung chinh vi du NAD,FAD,FMN tham gia chuyen va khu H,vit B6(pyridoxal)tham gia chuyen nhom amin.....
3.cau do hoan toan chinh xac ban ah`,ngoai chuc nang tao ATP (cai ny` thi` khoi noi':bimat: cai chat trung gian trong CT con tham gia dieu hoa cac QT khac,vi du ny`: NADH,H+ thi uc che tong hop axetyl CoA tu pyruvat ...... rui` chuc nang tong hop do cac chat trung gian lun,nhu cac chat cua "nga~ ba duong" nhu pyruvat(co the tao duoc tu alanin cua chuyen hoa protein,oxalo axetat co the tao tu aspartat,hoac anpha-cetoglutarat ,acetyl CoA tu PGA(phosphoglycerandehyt)co duoc tu thoai bien
tirglycerit ..... noi hcung la thong qua CT krebs te bao co the thuc hien ca 3 chuc nang tao nang luong,tong hop va dieu hoa`nen vai tro` cua CT ny` rat quan trong mun' hoc gioi Hoa Sinh thi phai hoc no cho ky~ vao`:nhannho:
 
pa` kon oi cho em hoi cai ny` chut nha:dance:
1.methinonin la 1 a.a tham gia metyl hoa hay sunful hoa ny`,nhung truoc do no can o dang hoat hoa' tuc la phai duoc gan nhom -CH3 y',nhung acid amin nao` gan CH3 cho no z? cai' ny` hum truoc co co noi ma` ghi hong kip nin ko bit,ai bit chi dum nha cam on rat la nhiu nhiu:mrgreen:
2.ceratin phosphat chuyen nhom P cho ADP de tao ATP ny`,nhung trong cong thuc cau tao y'(trong sach hoa sinh cua dai hoc y duoc tp HCM) thi thieu 1 O,tuc la H2PO3 ah` nhung trong ATP la` H2PO4 lan z O lay tu dau ra thk pa` kon truoc nha,ai bit xin pm cho em som som;hehehehe
 

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