APHY 101 Exam 1 Chapters 1–4 2026/2027 | 69 Questions & Answers | Cells, Chemistry, DNA, Metabolism & Homeostasis | Ivy Tech Community College

This comprehensive APHY 101 Exam 1 Chapters 1–4 2026/2027 study resource contains 69 questions with answers across 10 pages for students preparing for the first Anatomy and Physiology I examination at Ivy Tech Community College. The material concentrates on introductory anatomy and physiology, anatomical terminology, homeostasis, basic chemistry, organic molecules, enzymes, cellular structure and function, membrane transport, DNA and RNA, protein synthesis, mitosis, cellular respiration and metabolism. The cover page identifies the document as IVY TECH APHY 101 Exam 1 (1–4) 2026/2027 Exam Questions and Answers, making its intended course, exam range and academic year explicit. The opening questions provide focused review of cellular metabolism, genetics and cell division. Students are tested on glycolysis as the glucose-metabolism pathway occurring in the cytoplasm, thymine as a nitrogenous base found in DNA rather than RNA and the phases of mitosis. The page 1 visual question specifically asks students to identify prophase from an image of mitotic cell division, adding image-based recognition to the otherwise text-focused question bank. Later questions expand these concepts through the citric acid cycle, ATP production, DNA replication, transcription, translation, peptide-bond formation, mutations and the effects of ultraviolet radiation on DNA. The basic chemistry and biochemistry material reviews atoms, atomic mass, ions, electrolytes, pH, acids and bases, chemical bonds and chemical reactions. Students distinguish cations, ionic and covalent bonding, decomposition reactions and exchange reactions while also reviewing neutral solutions and physiological acid-base balance. One clinical application asks students to recognize a blood pH of 7.29 as acidemia/acidosis-related, connecting introductory chemistry with human physiology. Organic chemistry topics include carbohydrates, lipids, triglycerides, nucleic acids and proteins. A substantial section focuses on enzymes and metabolism. Questions review enzyme-substrate complexes, cofactors, the recycling of enzymes following catalysis, glycogen storage in the liver and skeletal muscle, and carbohydrates as an important cellular energy source. Metabolism is defined through the chemical reactions supporting life, while ATP is examined as the immediate energy source for cellular work. Students also distinguish positive and negative feedback, with negative feedback presented as an important regulatory mechanism for metabolic pathways. The cell structure and organelle questions cover the nucleus, nucleolus, cytoplasm, plasma membrane, endoplasmic reticulum and lysosomes. Students review the lipid-bilayer organization of the cell membrane, integral or transmembrane proteins and the lysosome's role in degrading worn cellular components and debris. Cell differentiation is addressed through the relationship between cellular size, shape and specialized function, while apoptosis and loss of cell-cycle control introduce the relationship between normal cellular regulation and cancer. The resource provides particularly strong preparation in membrane transport and osmosis. Students compare simple diffusion with facilitated diffusion, distinguish passive transport from ATP-dependent active transport and review osmosis across selectively permeable membranes. Questions connect extracellular glucose concentration with water movement and explain that osmotic pressure increases as the number of impermeant solute particles increases. These concepts are central to understanding fluid movement across biological membranes and provide an important foundation for later physiology topics. The DNA, RNA and protein-synthesis questions review DNA as the storage molecule for genetic information, complementary DNA replication, nucleic acids, thymine versus uracil and the phases of the cell cycle. Students identify interphase as the period in which DNA replication occurs, transcription as the synthesis of mRNA and translation as the process in which a polypeptide is assembled according to the mRNA base sequence. The resource also tests peptide bonds between adjacent amino acids and identifies UV radiation as a potential mutagen. Foundational anatomical terminology and body organization are integrated throughout the exam. Questions address the anatomical position, superficial, proximal, superior, the epigastric region, thoracic and abdominopelvic cavities, the diaphragm and the parietal pleura. Students also review why anatomy and physiology are closely connected: physiological functions depend on anatomical structures. Broader concepts include responsiveness, absorption, tissues, organs and the cell as the fundamental structural and functional unit of living organisms. The document's topics align closely with standard introductory Anatomy and Physiology references such as Betts et al., Anatomy and Physiology 2e (OpenStax), particularly the early chapters addressing an introduction to the human body, chemical organization, cellular structure, metabolism, membrane transport and cellular reproduction. These same foundations are also commonly covered in established A&P textbooks such as Marieb and Hoehn's Human Anatomy & Physiology. The uploaded resource is best used for active recall and Exam 1 preparation alongside the assigned Ivy Tech APHY 101 textbook, lecture materials and instructor learning objectives, especially because individual question banks can contain simplified wording or occasional answer-key errors. Relevant students: This document is most relevant to Ivy Tech Community College students enrolled in APHY 101 Anatomy and Physiology I and preparing for Exam 1 covering Chapters 1–4. It may also benefit nursing and pre-nursing students, allied-health students, health sciences majors, medical assisting students and other healthcare-program learners completing introductory Anatomy and Physiology prerequisites. Its strongest value is for students who need targeted question-and-answer practice in chemistry, cells, homeostasis, membrane transport, metabolism, DNA, RNA, protein synthesis and introductory anatomical terminology. 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