这里所谓的“低层次”是指研究低层次生命物质而言,不是说学科认识浅近的低水平或不发达等。“物质层次”是近代自然科学发展中提出来的一个重要概念。首先是物理、化学及天文学的进展,使人们对物质的认识超出了常识水平。根据对宏观的宇宙、星系………及微观的分子、粒子的认识以及其各具有的特殊或相关性质,建立了宏观高层次及微观低层次的物质层次概念。医学生物学的研究也由肉眼宏观较高层次的生物圈、种群、个体、器官系统向细胞、细胞器、分子、离子等微观较低层次发展,出现了在这一纵深层次上的低层次生命学科——分子生物学、量子生物学。分子生物学在许多领域中的 The so-called “low-level” refers to the study of low-level life material, not to say that the subjects of the level of shallow or underdeveloped and so on. The “material hierarchy” is an important concept put forward in the development of modern natural sciences. The first is the progress of physics, chemistry and astronomy, so that people's understanding of matter goes beyond common sense. According to macroscopic universe, galaxy ......... and micro-molecular, particle understanding and each have their own special or related nature, the macro-level and micro-level low-level material level concept. The study of medical biology has also developed from the macroscopical macroscopically higher level of biosphere, population, individual and organ system to the lower level of microstructure, such as cells, organelles, molecules and ions. The low-level life discipline at this level of depth appears - - Molecular Biology, Quantum Biology. Molecular biology in many fields