ATI TEAS 7 Real Science Exam – Practice Questions with Answers

This document is a practice exam for the ATI TEAS 7 Science section featuring 25 multiple-choice questions with correct answers. Topics include: structure connecting muscle to bone (tendon), heart chamber with thickest wall (left ventricle – pumps blood to systemic circulation), damage to cerebellum would most likely affect balance and coordination, hormone that increases blood glucose during stress (cortisol – glucocorticoid), blood entering right atrium comes from superior and inferior vena cava, structure preventing backflow from left ventricle to left atrium (mitral/bicuspid valve), part of nephron primarily responsible for glucose reabsorption (proximal convoluted tubule), decrease in blood calcium levels directly stimulates secretion of parathyroid hormone (PTH), gas exchange in lungs occurs due to concentration gradients, blood vessel type allowing diffusion of oxygen and nutrients into tissues (capillaries), increase in carbon dioxide levels causes increased respiratory rate, organelle responsible for ATP production (mitochondrion), process requiring energy to move substances against concentration gradient (active transport), during mitosis chromosomes line up at cell’s equator during metaphase, structure regulating what enters and exits the cell (cell membrane), substance with pH of 3 is acidic, enzymes function primarily to speed up chemical reactions, example of a chemical change (iron rusting), blood component responsible for clotting (platelets/thrombocytes), hemoglobin found in red blood cells, cell type most involved in fighting infection (leukocytes/white blood cells), system working most closely with nervous system to maintain homeostasis (endocrine system), if kidneys fail to excrete hydrogen ions blood pH becomes more acidic, vitamin deficiency most affecting blood clotting (vitamin K), organ system directly responsible for removing metabolic wastes from body (urinary system – kidneys). Suitable for ATI TEAS 7 test preparation, pre-nursing students, and allied health entrance exams.