Biology which domain(s) are made up of single-celled organisms that lack a nucleus and organelles? question 17 options: domain eukarya and domain bacteria. domain bacteria only. domain bacteria and archaea. question 18 (2 points) question 18 unsaved which of the following is not considered to be living therefore is not included in a domain? question 18 options: viruses bacteria eukaryotes the digestive system breaks down nutrients so that they can be absorbed by the bloodstream and carried to all of the body’s cells. which of the following traces the path of food as it passes through the digestive tract? question 21 options: mouth, stomach, esophagus, small intestine, large intestine. mouth, esophagus, stomach, small intestine, large intestine. mouth, stomach, large intestine, small intestine, esophagus are all heterotrophic, while can be either heterotrophic or autotrophic. question 23 options: fungi, protists protists, fungi plants, protists question 24 (2 points) question 24 unsaved which statement best describes the role of the lung in gas exchange? question 24 options: it takes in oxygen from the bloodstream. it takes in oxygen from water. it extracts oxygen from the atmosphere for use by body cells.