Understanding Pathophysiology,5th Edition (Chapters 1- 40):Understanding Pathophysiology,5th Edition by Huether and McCance : 100% Verified Questions & Answers: Latest Updated

. A student is observing a cell under the microscope. It is observed to have supercoiled DNA with histones. Which of the following would also be observed by the student? ANS: B The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its nucleus; thus, the nucleus should be observed. A single circular chromosome is characteristic of prokaryotic cells, which do not have histones. Free-floating nuclear material describes a prokaryotic cell, which would not have a distinct nucleus. Eukaryotic cells have membrane bounded cellular components called organelles. No organelles describes a prokaryotic cell. REF: p. 2 2. A nurse is instructing the staff about cellular functions. Which cellular function is the nurse describing when an isolated cell absorbs oxygen and uses it to transform nutrients to energy? a. A single circular chromosome b. A nucleus c. Free-floating nuclear material d. No organelles a. Metabolic absorption b. Communication c. Secretion d. Respiration ANS: D The ability of the cell to absorb oxygen refers to the cell’s function of respiration. The ability of the cell to function within a society of cells refers to its function of communication. The ability of the cell to take in nutrients refers to the cell’s function of metabolic absorption. The ability of the cell to synthesize new substances and secrete these elsewhere refers to the cell’s function of secretion. REF: p. 3 3. A eukaryotic cell is undergoing DNA replication. In