- Cdng thflc tinh IQ IQ = ^ ^ X
4. Di truyen hoc vdi benh AIDS (hgi chirng
+ Co chd phien ma ngugc.
Hogt dpng cda HS
- HS boat ddng nhdm: + Ca nhan van dung kidn thflc thuc td, kdt hgp vdi nghien cuu SGK trang 95 dd nhan bidt kidn thflc.
+ Thao luan nhdm thd'ng nhdt y kidn tra ldi.
Npi dung
b) Khd ndng tri tue vd su di truyen
- Tfnh di truyen cd anh
hudng d mflc dd nhat djnh tdi kha nang trf tue. - IQ tang khoang 3,5 diem trong mdt thap nien.
4. Di truyen hoc vdi benh AIDS (hgi chirng benh AIDS (hgi chirng suy giam midn dich tap nhi^m)
Hogt dpng cda GV + Hau qua cua benh
AIDS.
- GV nhan xet, danh gia va su dung tranh hinh vd xam nhap cua vi rut HIV de giang giai.
Hogt dpng cda HS
- GV bd sung kidn thflc:
+ Trong qua trinh lay nhidm su tuong tac gifla vi rut HIV va td bao bj lay nhidm rdt phflc tap vi vi rut cd boat ddng rat khac nhau tuy thudc ban chat va boat tfnh cua tflng loai td bao ma chung lay nhidm.
+ Hoat tfnh cua vi rut HIV phu thudc vao boat ddng cua thdng tin di truydn didu khidn chu ki sinh san cua vi rut. + HIV boat dgng rdt dac thu khdng gid'ng loai nao trong gidi vi rut.
- Dai dien nhdm tra ldi
-^ ldp nhan xet, bd sung.
- HS khai quat kie'n thflc.
Npi dung
Qua trinh lay nhidm bdt ddu khi vi rut HIV xam nhap vao td bao ngudi. + Hat vi rut gdm 2 phan tfl ARN, cac prdtein cdu true va enzim.
+ Vi riit sfl dung enzim phien ma ngugc dd tdng hgp mach ADN tren khudn ARN.
+ Nhd enzim tfl mach ADN vfla tdng hgp dugc dung lam khudn, tao mach ADN thfl hai. + Phan tfl ADN mach kep dugc tao ra xen vao ADN td bao chu nhd enzim.
+ ADN nhan ddi cung vdi he gen ngudi.
+ Vi rut HIV cd the tiem sinh vd ban trong td bao bach cdu T nhung khi td bao nay boat ddng thi bj vi rut tieu diet.
+ Su giam sut sd lugng va chflc nang cua cdc td bao bach cdu lam mat kha nang midn djch cua CO the, cdc vi sinh vat khac lgi dung luc co the suy giam midn djch tdn cdng gay tieu chay, sdt, lao, ung thu, viem mang nao.. ddn den chet.
Hogt dpng cda GV - GV yeu cdu HS thao
luan vd.
+ Hiem boa cua dai djch AIDS.
+ Nhan thflc cua HS vd dai djch AIDS.
Hogt dpng cda HS - HS boat ddng nhdm.
- Ca nhan van dung kidn thflc trao ddi.
- Thdng nha't y kidn: + Sd lugng ngudi nhidm HIV tang.
+ Lfla tudi nhidm HIV tfl 15 - 35 la do tudi hgc tap va lao ddng chfnh cua gia dinh, xa hdi. + Nhan thflc cua ngudi benh cdn rat ban chd, dac biet la viec phdng tranh lay nhidm cho ngudi xung quanh.
+ HS phai ndi khdng vdi ma tuy va HIV/AIDS.
Npi dung
4. Kiem tra danh gia
- GV yeu cdu HS tdm tdt kidn thflc bai hgc.
5. Dan do
- Chudn bj dn tap toan bd phdn di truyen. - On tap each xay dung ban dd khai niem.
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