A student uses a microscope to observe a single-celled organism that can move. The organism contains a nucleus and many chloroplasts. Based on the observations, the student claims the organism is not a bacterium. Which observations BEST supports the student's claim. * 1 point The organism is unicellular. The organism is able to move. The organism has a nucleus. The organism performs photosynthesis.

The organism has a nucleus

Explanation:

According to this question, a student makes a claim that an observed organism is not a Bacteria. Organisms have been classified into two major domains based on their nucleus. Eukaryotic organisms have a well-defined double membrane nucleus while prokaryotes do not.

The organism being observed in this question posseses a nucleus and many chloroplasts meaning that the organism is most likely an EUKARYOTE. The observations that backs the student claim is that the organism has a nucleus. Bacteria is an example of prokaryotic organisms with no nucleus in their cell.

6.4 cm (max) - 25 cm (min)