A team of scientists think they discovered a new organism while exploring Brazil. Upon bringing the specimen back to their lab in Atlanta, they observe the specimen for several weeks. They take a sample from the specimen to observe it under a microscope and see the sample is composed of many small compartments containing what appears to be nuclei. They shine a bright light to the left of the specimen and observe it slowly turn itself towards the light over multiple days. What further evidence would support that the newly discovered specimen is alive?