Bacterial cell structures may trigger an immune response in the host.
a. True
b. False

Here's one way to follow the scientific method. place the missing steps in the correct position in the process.

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

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.