Which of the following includes true componants of cell theory? I. All living things must have a cell wall. II. All living cells require glucose for survival. III. The basic unit of life is a cell. A. I only B. II only C. III only D. I and III.

Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?