chapter 7 Human Physiology: An Integrated Approach

Human Physiology An Integrated Approach, 6e (Silverthorn) Chapter 7 Introduction to the Endocrine System 1) Which of the following is NOT a method of hormone action A) control of enzymatic reaction rates B) control of ion or molecule transport across cell membranes C) control of electrical signaling pathways D) control of gene expression and protein synthesis E) All are methods of hormone action. Answer E Section Title The Classification of Hormones Learning Outcome 7.1 Skill Level I Reviewing Facts and Terms (Blooms Taxonomy Knowledge) 2) When a catecholamine or peptide hormone binds to receptors on the surface of a cell, A) the cell membrane becomes less permeable. B) a second messenger appears in the cytoplasm. C) the cell becomes inactive. D) the hormone is transported to the nucleus where it alters the activity of DNA. E) None of the answers are correct. Answer B Section Title The Classification of Hormones Learning Outcome 7.1 Skill Level I Reviewing Facts and Terms (Blooms Taxonomy Knowledge) 3) The link between a first messenger and a second messenger in a cell that responds to peptide hormones is usually A) cAMP. B) cGMP. C) adenylyl cyclase. D) a G protein. E) calcium. Answer D Section Title The Classification of Hormones Learning Outcome 7.1 Skill Level I Reviewing Facts and Terms (Blooms Taxonomy Knowledge) 4) When adenylyl cyclase is activated, A) calcium ions are released from intracellular stores. B) cAMP is formed. C) cAMP is broken down. D) protein kinases are metabolized. E) steroids are produced. Answer B Section Title The Classification of Hormones Learning Outcome 7.1 Skill Level I Reviewing Facts and Terms (Blooms Taxonomy Knowledge) 5) Typically, when steroid hormones bind to their receptors, A) adenylyl cyclase is activated. B) cyclic nucleotides are formed. C) G proteins are inhibited. D) gene transcription may increase or decrease. E) protein kinases are activated. Answer D Section Title The Classification of Hormones