What is the correct definition of the term fiber? a. nutrients used to repair body cells and tissues. b. a waxy, fat-like substance that the body uses to build cells and make other substances. c. nutrients that strengthen bones and teeth, keep blood healthy, and keep the heart and other organs working properly. d. a complex carbohydrate that the body cannot break down.

Which statement best describes the role of the artificial heart? the artificial heart is a good replacement option for individuals who do not want a human heart. the artificial heart has been a great option because it can keep patients alive for a very long time. the artificial heart is not a good option because of the high possibility for rejection. the artificial heart has limited usefulness but can prolong life or be a tool to use while waiting for a transplant.