Of course it's organic tissue. [ Why would organics think of synthesizing anything else than what would benefit them?

Though...

Elthree types a bit more, delving further into the research notes. ]

There are mentions of two inorganic beings on board. Artificial intelligences, the both of them.

[ She glances up at Megatron, the silent implication of, "so no naturally occurring inorganic lifeforms like you" left hanging in the air between them. Then she turns back to the terminal. ]

A droid known as Wheatley, current status unknown. And the ship's AI, Viveca. Whoever's notes these are... They were building a body for her.

[ If she had a mouth, she would smile. She needs to find out whose research this is and thank them. ]