Which is true of prokaryotic and eukaryotic cells? Eukaryotic cells do not have nuclei, and prokaryotic cells do have nuclei.
Eukaryotic cells are simpler than prokaryotic cells.
Prokaryotic cells lack membrane-bound organelles, and eukaryotic cells contain membrane-bound organelles.
Prokaryotic cells are larger than eukaryotic cells.

In an experiment examining the effects tai chi on arthritis pain, callahan (2010) selected a large sample of individuals with doctor-diagnosed arthritis. half of the participants immediately began a tai chi course and the other half (the control group) waited 8 weeks before beginning. at the end of 8 weeks, the individuals who had experienced tai chi had less arthritis pain that those who had not participated in the course.

Dan made the table shown to describe two different relationships between animals. organism interactions relationship a relationship b one organism lives inside the organism it feeds off no organism is harmed which of the following statements is most likely correct?

A(n) is a molecule influences the way that a molecule reacts.