Which of the following is NOT part of the cell theory? A : All life functions are carried on by cells

B: All cells come from cells that are already alive

C : All cells must breath air

D: All organisms are made up of cells

During an experiment, readings for blood pressure in a persons body were found to be constant . however , when he measured by a different blood pressure cuff , the readings differed by 15 points for each reading. this difference indicates that the results are