第二单元第一章第三节观察动物细胞（The second unit, Chapter 1, section third, looks at the animal cells）.docVIP

第二单元第一章第三节观察动物细胞（The second unit, Chapter 1, section third, looks at the animal cells） The second unit, Chapter 1, section third, looks at the animal cells Knowledge and skills Cells and animal cells of 1. ____ and _____ is the same. 2. oral epithelial cells were observed Objective requirement: Temporary loading production and observe the person ____, the basic structure of knowledge of human oral epithelial cells Materials: ____, dilute iodine solution, disinfected toothpicks, dropper, gauze, tweezers, absorbent paper, ____, ____, ____ Method: rub, drop (drop of saline to ____), scraping (with sterile toothpicks in the oral rinse on the inner wall of his net ____ scraping a few), coating, cover, dye 3. the basic structure of animal cells is ____, ____ and ____. 4. simulation production: In the model of animal cells in the production of plastic bags, the equivalent of ____, preserved the equivalent of ____, equivalent to ____ agar. Reference answer: 1. morphological structure 2. physiological saline oral epithelial cell slides microscope coverslip maintained the normal morphology of oral epithelial cells, avoid excessive cell water bursting gently 3. cell membrane cytoplasmic nucleus 4. cell membrane nucleus cytoplasm Process and method 1. skilled production and use of temporary slide microscope, basic structure of human oral epithelial cell. 2., distinguish the main differences between animal and plant cell structures. Emotion, attitude and values The experimental design, improving experiment, develop their creative potential, in order to understand the ideas and methods of scientific exploration development; continue to form a bold but cautious psychological quality; in the simulation of production activities, improve the learning interest in biology. Cooperate with you to explore 1. why should the producers oral epithelial cells be loaded with a normal saline concentration of 0.9%? What will happen if you add distilled water or 3% salt water? The liquid concentra