Which statements about cells are true?

a. cells are the basic unit of all living things.

b. cells have unique functions and features.

c. all cells have some recognizable similarities.

d. every single cell works like a small factory.

e. cells follow a genetic dna blueprint to construct an organism.

f. cells are composed of different parts called organelles.

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.