Food-grade titanium dioxide (E171) and zinc oxide nanoparticles (ZnO NPs) are found in diverse products for human use. E171 is used as whitening agent in food and cosmetics, and ZnO NPs in food packaging. Their potential multi-organ toxicity has raised concerns on their safety. Since ...
STSE教育理念5E教学模式核心素养基于STSE教育理念,运用5E教学模式对人教版高中生物学必修1《分子与细胞》第五章第二节"细胞的能量'货币'ATP"进行教学设计,通过引入,探究,解释,迁移和评价环节培养学生的生物学核心素养.叶珍福建省建瓯第一中学