Q: Answer the following question given this paragraph: Excess water is absorbed from food waste in the large intestine before it passes out of the body through the anus as feces. Trillions of helpful bacteria also live in the large intestine. They carry out important roles, such as making vitamins. Q: What is absorbed from food waste in the large intestine before it passes out of the body as feces? A: | OPTIONS:
- distilled water
- dependent water
- inactive water
- excess water
A: excess water

Q: Answer the following question given this paragraph: symbiotic relationship in which one species benefits while the other species is harmed. Q: What is the term for the relationship in which one species benefits while the other species is harmed? A: | OPTIONS:
- combative relationship
- commensal relationship
- parasitic relationship
- symbiotic relationship
A: symbiotic relationship

Q: Answer the following question given this paragraph: Q: Metabolism is an emergent property of life that arises from orderly interactions between what? A: | OPTIONS:
- tissues
- body systems
- nutrients
- molecules
A: molecules

Q: Answer the following question given this paragraph: 18.3 Erythrocytes The most abundant formed elements in blood, erythrocytes are red, biconcave disks packed with an oxygen-carrying compound called hemoglobin. The hemoglobin molecule contains four globin proteins bound to a pigment molecule called heme, which contains an ion of iron. In the bloodstream, iron picks up oxygen in the lungs and drops it off in the tissues; the amino acids in hemoglobin then transport carbon dioxide from the tissues back to the lungs. Erythrocytes live only 120 days on average, and thus must be continually replaced. Worn-out erythrocytes are phagocytized by macrophages and their hemoglobin is broken down. The breakdown products are recycled or removed as wastes: Globin is broken down into amino acids for synthesis of new proteins; iron is stored in the liver or spleen or used by the bone marrow for production of new erythrocytes; and the remnants of heme are converted into bilirubin, or other waste products that are taken up by the liver and excreted in the bile or removed by the kidneys. Anemia is a deficiency of RBCs or hemoglobin, whereas polycythemia is an excess of RBCs. Q: The most abundant formed elements in blood, erythrocytes are red, biconcave disks packed with an oxygen-carrying compound called this? A: | OPTIONS:
- plasma
- hydrogen
- pus
- hemoglobin
A: hemoglobin