If you choose to concentrate on the units that are being used in biocatalysis (so called biocatalysts, such as enzymes, cell organels or cells), than this choice of optionals is probably the one you are looking for. You mainly focus on the efficient and effective obtain your desired conversions, with the help of above mentioned biocatalysts. These processes usually take place in bioreactors, on which you also have gain knowledge. Consequently, this choice of optionals is an example of strong integration: a number of technical, microbiological en chemical aspects are relevant.
period 1

PRE-21306 bioreactor design
PCC-30803 / ORC-31303 general practical experience period 2

SCO-20306 signals and system modeling
ORC-30806 structure and reactivity period 3
PRE-30806 marine and animal cell biotechnology

PRE-31306 transfer processes 1
period 5

PRE-60312 bioprocess design