ATI TEAS 7 Science Practice Test Questions With Correct Answers

Which blood group is a universal donor? a. A b. B c. AB d. O - 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 - 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 - 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 - 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 - Answer d. Small intestine As soon as an invader, known as a(n) ______________, enters the body, the body begins to fight. a. antibody b. pathogen c. trigger d. vaccination - Answer b. pathogen Where is skeletal muscle found? a. Inside the heart b. Attached to bone c. Lining the walls of the bladder d. Within the gastrointestinal tract - Answer b. Attached to bone If a person smells something sweet, what form of information is this initially perceived as in the nervous system? a. Cognitive b. Integrative c. Motor d. Sensory - Answer d. Sensory While hiking, a person is startled after encountering a bear. Her palms get sweaty and her heart starts racing. Which part of her nervous system was directly stimulated? a. Central b. Parasympathetic c. Somatic d. Sympathetic - Answer d. Sympathetic Parasympathetic = Peace Sympathetic = Stress Which of the following types of tissues include cells of the immune system and of the blood? a. Connective b. Epithelial c. Muscle d. Neural - Answer a. Connective Epi = first layer Connect = inside Muscle = muscles Neural = brain Which best describes homeostasis? a. A functional system of the body b. Blood flow to every cell in the body c. A relatively constant environment within the body d. Neural pathways that have integrated into the body - Answer c. A relatively constant environment within the body Fertilization (the fusing of one sperm and an ovum) results in a(n) _________. a. embryo b. fetus c. infant d. zygote - Answer d. zygote