It serves as a barrier to biological activity.
The answer is C. proteins are synthesized
Protein synthesis occurs after transcription and translation, right before DNA replication. Protein synthesis shows how enzymes and other proteins are formed from DNA. The sequence of events would look like this:
DNA replication --------------------------> RNA--------------------------> Protein Synthesis
transcription translation
D. The nervous system produces gametes
Mitochondria, cell membrane, and vacules
