Anatomy & Physiology Chapter 3 Test Bank Questions And Answers 2022/2023

Anatomy & Physiology Chapter 3 Test Bank Questions And Answers 2022/2023 what are three main parts of human body cell? a. plasma membrane, organelles, cytoplasm b. plasma membrane, organelles, nucleus c. plasma membrane, cytoplasm, organelles d. plasma membrane, cytoplasm, nucleus e. plasma membrane, cytosol, organelles - ANS-d. plasma membrane, cytoplasm, nucleus briefly describe the fluid mosaic model - ANS-the fluid mosaic model states that the molecular arrangement of the plasma membrane resembles an ever-moving sea of fluid lipids containing a mosaic of many different proteins the three main components of lipid bilayer portion of plasma membrane are a. phospholipids, glycoproteins, & water b. proteins, cholesterol, & fatty acids c. cholesterol, triglycerides, & glycolipids d. phospholipids, cholesterol, & glycolipids e. phospholipids, cholesterol, & proteins. - ANS-d. phospholipids, cholesterol, & glycolipids what are nonpolar parts of phospholipids? a. phosphate-containing head groups b. fatty acid tail groups c. both head & tail groups are nonpolar d. neither head nor tail groups are nonpolar - ANS-b. fatty acid tail groups polar portion of cholesterol molecule, which forms hydrogen bonds w/ polar heads of neighboring phospholipids & glycolipids, consists of a. -OH group b. -CH3 group c. -CH4 group d. -COOH group e. none of these choices correct - ANS-a. -OH group which type of membrane protein extends across entire lipid bilayer of plasma membrane touching both intracellular fluid & extracellular fluid? a. complement protein b. transmembrane protein c. peripheral protein d. lipoprotein e. all choices are correct - ANS-b. transmembrane protein describe five different functions of integral membrane proteins. - ANS-some membrane proteins act as ion channels or carriers that transport substances across membrane. other membrane proteins act as receptors that allow cell to respond to various types of ligands. other membrane proteins are enzymes that catalyze CONTINUES...