What is the most difficult course for biology students to learn Zhihu?

The most difficult courses are definitely materialization, biochemistry and bioinformatics, which are three extremes. . . Physical chemistry studies the movement and transformation of molecular energy from a physical point of view. For example, temperature, humidity, light, electricity, magnetism, sound, force ... without physical influence, cells and molecules cannot exist independently; Biochemistry studies the chemical reaction and control of substance metabolism, and many of them also involve physical chemistry. Moreover, at present, human beings can only know a little about chemistry, not to mention chemical reactions in cells; In addition, bioinformatics and genomics are closely related. In order to decipher the genome in the future, human beings have very high requirements for physics, chemistry, biology, mathematics and programming.

But I think these three courses are just tools after all. Learning biotechnology requires a comprehensive understanding of botany, zoology, microbiology, virus immunity, cell biology, molecular biology and genetics, and then choose the direction.