TEAS 7 Science Practice Test Questions with Complete Solutions

Which blood group is a universal donor? a. A b. B c. AB d. O - Correct Answer d. O Blood oxygen levels are most likely low when blood a. leaves the aorta b. fills the right atrium c. reaches body tissues d. flows through ateries - Correct Answer b. fills the right atrium with An intracellular chemical signal can be produced in the cell membrane. Once it is produced, where does it go? a. To a different cell b. To another part of the cell c. To a region right outside the cell d. To an area with high ion concentration - Correct Answer b. To another part of the cell After food has been masticated in the oral cavity, where does it go next? a. Colon b. Liver c. Pancreas d. Pharynx - Correct Answer d. Pharynx The diffusion of nutrients through the walls of the digestive system is critical to homeostasis in the body. Where does the majority of this diffusion take place in the digestive system? a. Stomach b. Esophagus c. Oral cavity d. Small intestine - Correct Answer d. Small intestine As soon as an invader, known as a(n) ______________, enters the body, the body begins to fight. a. antibody