DE SO 1

DE SO 1DE THI CHON LOC HOC SINH GIOIMON SINH 8Thoi gian: 90 phut( khong ke thoi gian giao de)Cau 1:( 2,0 diem)Phan tich nhung dac diem tien hoa cua he co nguoi so voi he co thu ?Cau 2: diem)Cho biet Tam that trai moi lan co bop day di 70ml mau va trong mot ngay dem da day diduoc 7560 lit mau. Thoin gian pha dan chung bang chu ki tim,thoi gian pha co tam nhi bang 1/3 thoi gian pha co tam that Hoi :1. So lan mach dap trong phut?2. Thoi gian hoat dong cua chu ki timThoi gian cua moi pha: co tam nhi,co tam that,dan chung?Cau 3: diem) Hay giai thich nghia den ve mat sinh hoc cau thanh ngu “Nhai ki no lau”1. Co kien cho rang “Thuc an chu thuc su tieu hoa ruot non”. Em hay nhan xet kien tren.2. Hay giai thich nghia den ve mat sinh hoc cau thanh ngu “nhai ki no lau”Cau (2 diem)1. Ban chat cua su ho hap ngoai va ho hap trong la gi?2. Giai thich co so sinh ly cua tieng khoc chao doi?Cau 5: (2 diem)1. Chung Minh rang dong hoa va di hoa la hai qua trinh mau thuan nhung thong nhat trong cung the song HET