Tiet 19-Kiem tra

Trường THCS Bài kiểm tra
Hoằng Trường Môn: Sinh học 8. Bài số 2. Thời gian: 45 phút.
Họ tên HS: ..................................................... Lớp: 8 ...
Kiểm tra ngày: ... /11/2011
Điểm:
Bằng số: ...................
Bằng chữ: ....................
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Nhận xét của giáo viên:

GV kiểm tra: ...............
Nguyễn văn Long


I. Đề bài:
Câu 1(1,5 đ): Cấu tạo tế bào gồm những phần nào? Nêu chức năng chính của từng thành phần?
Câu 2(1 đ): Viết sơ đồ theo trình tự các yếu tố của một cung phản xạ?
Câu 3(1 đ): Tại sao xương người già giòn và rễ gãy?
Câu 4(2 đ): Nguyên nhân mỏi cơ và cách khắc phục khi bị mỏi cơ?
Câu 5(1,5 đ): Nêu ngắn gọn vai trò của các loại tế bào máu?
Câu 6(2 đ): Lực đẩy giúp máu tuần hoàn liên tục và theo một chiều trong hệ mạch được tạo ra từ đâu ?
Câu 7(1 đ): Vì sao tim hoạt động suốt đời không bị mệt mỏi?
II. Bài làm:
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