Among them, biochemistry and molecular biology belong to one or two disciplines under biology, and they are disciplines that study the chemical composition of objects and chemical changes and their laws in the course of life; Subject teaching (biology) is mainly to train young middle school biology teachers who are engaged in biology teaching and research in middle schools with modern educational concepts and high level.
Botany mainly studies the morphology, classification, physiology, ecology, distribution, occurrence, inheritance and evolution of plants, including plant adversity mechanism, plant developmental biology, plant disease resistance mechanism, plant ecological plant resources and so on. Graduates can engage in scientific research, technological development, teaching and management.
Generally, there are two specialized courses in the initial test of postgraduate entrance examination, which are basically biochemistry, molecular biology, botany, plant physiology and so on. For majors like those you want to take, you'd better learn biochemistry and molecular biology well in advance and be prepared.
Some research institutes or schools only take one professional course, but the scope of the examination is wider. In short, biochemistry should be well prepared, and some units need chemistry.
Cell biology is a science that studies the structure, function and various life laws of cells at microscopic, submicroscopic and molecular levels. Cell biology develops from cytology, which is the study of cell structure and function (especially chromosomes).