After entering the college entrance examination system for review, there are several books to be sorted out and absorbed in each subject, adding up to dozens. How can we review efficiently at this time? It is a good choice to sort out the review content with mind map. It is clear to review a textbook into a mind map, and it can also sort out ideas in the process of sorting out, deepen the impression and help to understand.

Firstly, a time line diagram is used to summarize the six chapters of compulsory biology: entering cells, molecules that make up cells, basic structure of cells, input and output of substances in cells, energy supply and utilization of cells, and life course of cells.

Then use mind map to disassemble detailed knowledge points, which will make your learning efficiency higher and your memory deeper.

From biosphere to cell, virus has no cell structure, but it must rely on (living cells) to survive. Life activities are inseparable from cells, which are the basic units of the structure and function of organisms. Structural levels of life system: (cell), (tissue), (organ), (system), (individual), (population) (community), (ecosystem) and (biosphere).

Blood belongs to (tissue) level, and skin belongs to (organ) level. Plants have no (systematic) hierarchy, and single-celled organisms can be transformed into both (individual) and (cell) hierarchies. The most basic life system on earth is (cell).

Population: the total number of individuals of the same species in a certain area. Example: All the carp in the pond. Community: the sum of all living things in a certain area. Example: All the creatures in the pond. (not all fish), ecosystem: a unified whole formed by the interaction between a biological community and its inorganic environment.

Material and energy exchange between organisms and the environment based on cell metabolism; Growth and development based on cell proliferation and differentiation; Heredity and variation based on intracellular gene transfer and change.