Anatomy and Physiology - chapter 3
Questions with Verified Answers
plasma membrane - ANSWERSforms the outer boundary of the cell, through which the
cell interacts with its external environment
nucleus - ANSWERSdirects cell activities, most of which take place in the cytoplasm;
usually located near the center of the cell
organelle - ANSWERSspecialized structure that performs a specific function
intracellular - ANSWERSsubstances inside the cell
extracellular - ANSWERSsubstances outside the cell
membrane potential - ANSWERScharge difference across the plasma membrane
resulting from the regulation of ion movement
glycocalyx - ANSWERScollection of glycolipids, glycoproteins and carbohydrates on the
outer surface of the plasma membrane
phospholipids and cholesterol - ANSWERSpredominant lipids of the plasma membrane
liquid bilayer - ANSWERSdouble layer of phospholipid molecules
hydrophilic - ANSWERS"water-loving"
hydrophobic - ANSWERS"water-fearing"
fluid-mosaic model - ANSWERSmodel suggesting that the plasma membrane is neither
rigid nor static in structure, but is highly flexible and can change its shape and
composition through time
cholesterol - ANSWERSlimits the movement of phospholipids, providing stability to the
plasma membrane
marker molecule - ANSWERScell surface molecule that allows a cell to identify other
cells or other molecules
glycoprotein - ANSWERSprotein with attached carbohydrate
glycolipid - ANSWERSlipid with attached carbohydrate
Questions with Verified Answers
plasma membrane - ANSWERSforms the outer boundary of the cell, through which the
cell interacts with its external environment
nucleus - ANSWERSdirects cell activities, most of which take place in the cytoplasm;
usually located near the center of the cell
organelle - ANSWERSspecialized structure that performs a specific function
intracellular - ANSWERSsubstances inside the cell
extracellular - ANSWERSsubstances outside the cell
membrane potential - ANSWERScharge difference across the plasma membrane
resulting from the regulation of ion movement
glycocalyx - ANSWERScollection of glycolipids, glycoproteins and carbohydrates on the
outer surface of the plasma membrane
phospholipids and cholesterol - ANSWERSpredominant lipids of the plasma membrane
liquid bilayer - ANSWERSdouble layer of phospholipid molecules
hydrophilic - ANSWERS"water-loving"
hydrophobic - ANSWERS"water-fearing"
fluid-mosaic model - ANSWERSmodel suggesting that the plasma membrane is neither
rigid nor static in structure, but is highly flexible and can change its shape and
composition through time
cholesterol - ANSWERSlimits the movement of phospholipids, providing stability to the
plasma membrane
marker molecule - ANSWERScell surface molecule that allows a cell to identify other
cells or other molecules
glycoprotein - ANSWERSprotein with attached carbohydrate
glycolipid - ANSWERSlipid with attached carbohydrate
