Learning metabolic pathways is vital for understanding biochemical processes and all of their implications for life. Their learning in the virtual environment is complex and generative learning strategies, such as the construction of online conceptual maps, can help in this process. This article presents a proposal for the collaborative construction of virtual concept maps on metabolism by students in the CMap Cloud browser application (free). A sequence of steps is suggested, which include online group brainstorming and discussions, peer assessment, and teacher's feedback. This proposal is flexible and can be adapted to the didactic and technological reality of each teacher.