Scientists don't have a clear-cut definition of life.

a. True

b. False User: Only a living organism exhibits all of the characteristics of life.

a. True

b. False

False. Scientists have a clear-cut definition of life already. Biology is the study of life and other organisms that gave way for scientists to discover the many complexities of life which start of from a tiny cell.

True. Only a living organism exhibits characteristics of life, this is why in science there are different forms of it that are specifically classified.