If you have questions about your course of studies please contact your Study Advisor Biology/Biotechnology. There, Dr. Martin Zimmermann is responsible for issues regarding Biology studies and Dr. Monika Reiss looks after students who study Biotechnology.
In addition the Examination Board Biology is at your disposal.
If you have more general questions about your studies please approach the Student Advice Centre.
The Central Examination Office of RWTH can answer questions regarding the Campus-Office system and the administration of exam registration.
For many further questions regarding your studies or living as a student in Aachen, the Biology department student association might be a helpful resources.