thay moi nguoi thao luan nen minh xin gop 1 chut:
2.a, ho hap sang la mot qua trinh ho hap chi xay ra o thuc vat C3, trong dieu kien nhiet do cao, troi nang, gio manh. nguyen lieu la axit glicolic, xay ra o ca luc lap, ti the, va peroxixom.
ho hap sang la mot qua trinh vo ich, ko can thiet cho thuc vat vi no gay lang phi san pham quang hop.
b, quang hop la qua trinh oxi- khu vi: trong pha sang dien ra qua trinh qua trinh quang phan li nuoc - pu õi hoa(cai nay minh ko nho ro cho lam). pha toi la pha co dinh CO2 - pha khu.
3.a, diem khac nhau giua he tuan hoan kin va ho:
he tuan hoan kin co mao mach , toc do mau chay nhanh va ap suat cao, kha nang van chuyen va phan phoi nhanh, mau ko tiep xuc truc tiep voi te bao ma thong qua dich mo.
he tuan hoan ho ko co mao mach, toc do mau chay cham, ap suat thap, van chuyen va phan phoi cham, mau tiep xuc truc tiep voi te bao.
b, ca xuong ho hap hieu qua vi mang cua ca xuong duoc cau tao tu nhieu cung mang, tren cung mang co nhieu phien mang, tren cac phien mang co he thong mao mach day dac. dong nuoc mang Ò vao va lay Cò ra mot cach gan nhu lien tuc nho vao su phoi hop nhip nhang giua trem mieng va diem nap mang. hon nua cac mao mach luon sap xep nguoc chieu voi dong nuoc nen trao doi khi kha hieu qua.
4. tim hoat dong ca doi ko moi vi tim co pha dan chung, thoi gian nghi>=thoi gian hoat dong, tim con co giai doan tro tuyet doi nen hoat dong ca doi ko moi.
b, dong mach: huyet ap cao , van toc mau lon , tiet dien vua.
mao mach: huyet ap nho hon, van toc mau nho nhat, tiet dien lon nhat.
tinh mach: huyet ap nho nhat, van toc lon hon, tiet dien vua.