Biology 1406 Chapter 5 Review updated already passed

Biology 1406 Chapter 5 Review updated already passedList the 5 functions of the plasma membrane - correct answer 1. To isolate the cells from the external environment 2. Selectively permeable 3. Communicates with other cells 4. Protects the cell 5. Moves the cell, secretes substances, or transports impulses What do we mean when we say that a membrane is selectively permeable? - correct answer It allows certain things to pass through the membrane The ___ of a phospholipid are polar while the ___ of a phospholipid are non polar. - correct answer head, tail What is the function of the phospholipids in the plasma membrane? - correct answer Allow the membrane to be flexible in its environment Why do we say that the plasma membrane is a "fluid mosaic"? - correct answer It's not rigid What is the function of cholesterol in the membrane? - correct answer It makes it strong List the 5 major membrane proteins and their functions - correct answer 1. ?? 2. Channel protein - ?? 3. Carrier protein - bind molecules and move them across membranes 4. Receptor protein - binds molecules and move them across membranes 5. Recognition protein - serve as identification tags and cell-surface attachment sites identifies self from non-self (foreign)