Regarding the descriptions of BioBrick, which are correct? A: Biobrick is a standardized biological part. B: BioBrick may be large or small, and part, device or system can be a kind of BioBrick. C: BioBricks have standard restriction sites. D: BioBricks are the basic units of synthetic biological systems that can be connected to each other. E: Biological modules can also be BioBricks.

BioBricks are standard biological parts. Like the standard parts in other industries, Biobricks can be connected with each other, or they can be disassembled and reassembled with other parts.