Core practical 1:Looking at cells 观察细胞 Core practical 2:pH and enzyme activity pH值和酶活性 Core practical 3:Food tests 食物测试 Core practical 4:Osmosis in potato strips 土豆条里的渗透作用 Core practical 5:Microbial cultures 微生物培养 Core practical 6:Photosynthesis 光合作用 Core practical ...