Membrane Lipids: Glycolipids Quiz

What is the principal sialic acid found in human tissues?

Which glycolipid is present in high amounts in myelin?

What type of molecules does ganglioside contain in addition to glucosylceramide?

Which sterol is the most common in the membranes of an animal cell?

Where does the majority of cholesterol reside within the cell?

How does cholesterol modify the fluidity of membranes?

What is the main function of membranes in a cell?

Where are choline-containing phospholipids mainly located in the cell membrane?

What is the consequence of inhibiting Na+-K+ ATPase by digoxins or digitals?

What do specific deficiencies or alterations of membrane components lead to?

How are membranes described in terms of their structure and surfaces?

What term describes membranes as having both hydrophobic and hydrophilic compartments?

Which membrane structure has the highest protein content due to the presence of the electron transport chain and carrier proteins?

What are lipid rafts enriched in, making them specialized areas in the plasma membrane?

Which specialized plasma membrane structure is involved in signal transduction and interact with the actin cytoskeleton?

What is the function of caveolae in the plasma membrane?

Which membrane structure is known for being an electrical insulator on many nerve fibers?

What makes the mitochondrial inner membrane the most selectively permeable membrane known?

Which type of molecules are triacylglycerols (TAGs) and cholesterol-esters?

Why are pure hydrophobic molecules like TAGs and cholesterol-esters not present in membranes?

What kind of structure forms a fluid mosaic model in cell membranes?

What property makes the lipid bilayer impermeable to most water-soluble molecules?

Which gases readily diffuse through the hydrophobic regions of the membrane?

Which type of molecules are most likely to have a high permeability coefficient in a lipid bilayer?

What is the effect of the Na+-K+-ATPase pump on the cell interior?

Which statement about Na+-K+-ATPase inhibitors ouabain and digitalis is true?

How does glucose enter the cell in the Na+-glucose symport?

What happens to glucose transport when the extracellular Na+ concentration is low?

What role does the Na+-K+-ATPase pump play in relation to secondary active transporters?