Edexcel IGCSE Biology: Double Science 复习笔记 5.3.2 Genetic Engineering: Insulin Manufacturing Insulin The gene for human insulin can be inserted into bacteria which then produce human insu...
Edexcel IGCSE Biology: Double Science 复习笔记 5.3.1 The Process of Genetic Engineering The Process of Genetic Engineering The gene that is to be inserted is located in the original organism...
Edexcel IGCSE Biology: Double Science 复习笔记 5.2.1 Selective Breeding Selective Breeding in Animals Selective breeding or artificial selection means to select individuals with desirable ch...
Edexcel IGCSE Biology: Double Science 复习笔记 5.1.5 Bacteria in Food Production Bacteria in Food Production Microorganisms can be used by humans to produce foods and other useful substances...
Edexcel IGCSE Biology: Double Science 复习笔记 5.1.5 Bacteria in Food Production Bacteria in Food Production Microorganisms can be used by humans to produce foods and other useful substances...
Edexcel IGCSE Biology: Double Science 复习笔记 5.1.4 Anaerobic Respiration in Yeast Practical: Investigating Anaerobic Respiration in Yeast Yeast can respire anaerobically (without oxygen), ...
Edexcel IGCSE Biology: Double Science 复习笔记 5.1.3 Yeast in Food Production Yeast in Food Production Microorganisms can be used by humans to produce foods and other useful substances One e...
上个月，U.S.News美国大学排名发布，美国院校们的排名变化一时之间又让留学生及准留学生们议论纷纷，想必有人欢喜就会有人忧愁。 除了鼎鼎大名的八大藤校，“公立常春藤”们也成为很多国际学生心目中的梦校。众所周...
Modelling using First Order Differential Equations Why are differential equations used to model real-world situations? A differential equation is an equation that contains one or more derivatives D...
