A&P 1 Final Exam, Straighterline Anatomy and Physiology 1, Straighterline A&P 1 Cumulative Final Real Exam Questions WITH 100% RATED Correct Answers EXPERT VERIFIED JUST RELEASED GET IT A+ 2025/2026

A&P 1 Final Exam, Straighterline Anatomy and Physiology 1, Straighterline A&P 1 Cumulative Final Real Exam Questions WITH 100% RATED Correct Answers EXPERT VERIFIED JUST RELEASED GET IT A+ 2025/2026 1. What is the smallest level of organization in the body that contains genetic information? A. Chemical B. Cellular C. Tissue D. Organism ANSWER: B. Cellular Rationale: The cellular level includes the nucleus, which contains the cell's genetic material. 2. Which is an example of a normally occurring positive-feedback mechanism? A. A decrease in blood pressure after blood loss B. An increase in heart rate after blood loss C. A decrease in body temperature D. Stretching of the uterus near the end of pregnancy ANSWER: D. Stretching of the uterus near the end of pregnancy Rationale: Uterine stretching promotes contractions, which increase stretching and further strengthen the contractions. 3. Which process produces the greatest amount of ATP during aerobic cellular respiration? A. Glycolysis B. Lactic acid fermentation C. Oxidative phosphorylation D. Citric acid cycle ANSWER: C. Oxidative phosphorylation Rationale: The electron transport chain and chemiosmosis during oxidative phosphorylation generate most of the ATP. 4. During DNA replication, how are the two new DNA strands produced? A. Both strands form continuously B. Both strands form continuously and are joined by DNA ligase C. One strand forms continuously and the other forms in short segments joined by DNA ligase D. One strand is made entirely of RNA ANSWER: C. One strand forms continuously and the other forms in short segments joined by DNA ligase Rationale: The leading strand is synthesized continuously, while the lagging strand is synthesized as Okazaki fragments that are joined by DNA ligase. 5. Which component of the bone matrix gives bone much of its flexibility and tensile strength? A. Cartilage B. Collagen C. Hydroxyapatite D. Mineral salts ANSWER: B. Collagen Rationale: Collagen fibers provide flexibility and tensile strength, while mineral crystals provide hardness. 6. Which component of bone matrix is primarily responsible for its hardness? A. Collagen B. Elastic fibers C. Hydroxyapatite D. Adipose tissue ANSWER: C. Hydroxyapatite Rationale: Hydroxyapatite is a calcium-phosphate mineral that gives bone its hardness and resistance to compression. 7. Which type of muscle tissue is widely distributed throughout the walls of hollow organs? A. Cardiac B. Skeletal C. Smooth D. Tendon ANSWER: C. Smooth Rationale: Smooth muscle is found in the walls of many hollow organs, including blood vessels and portions of the digestive tract.