my subject that is closest to favorite

The most passable subject or with not so brad grades for me this semester was biology (or rather cellular bases), it is one of the few subjects in which my attendance was almost complete, therefore, in classes I relied on taking notes, listening to the teacher and then write in my notebook the main ideas and then read them at the time of study. The main contents have been:
- Microscopy
- Organization of cell membranes
- Cytoskeleton and cell junctions
- Ionic balance and transport
- Mitochondria and peroxisomes
- Among others

I like this subject because reading it is understandable to me and not so difficult to acquire the main concepts, apart from generally liking the topics covered.
On the other hand, it depends on the teacher whether or not I understand the subject in the same class, for example, there are some that explain well and is more understandable the first time, while there is another that no matter how mucho attention is paid, in my case at least complicates me to understand.
In a few words, the subject is nice but also complex, so you have to know how to understand it and study it.