Which of the following is not a living organism? a. a muscle cell b. an amoeba c. a rosebush d. an earthworm what characteristic do all living things share? a. they are mobile. b. they give off carbon dioxide. c. they have a brain. d. they are made of cells. to be considered a living thing, an organism must be able to a. produce oxygen. b. increase in size. c. adapt to change. d. move independently. in order to be considered a living thing an organism must a. create a stimulus. b. reproduce asexually. c. be made of cells. d. have a heartbeat. doctors ask patients with bacterial infections to take antibiotics for the entire prescribed course. it is important that patients do this even if they start to feel better before the medication has run out. this to fully kill off the pathogenic bacteria and prevent bacterial resistance to antibiotics. a strain of bacteria becoming resistant to an antibiotic is an example of a. adapting to change. b. sexual reproduction. c. cellular respiration. d. a non-living thing.