Exam 9: Lipids and Membranes

Match each technique with its purpose." A) separate groups of neutrallipids B) diacylglycerolseparation based on chain length and degree of unsaturation C) Lateral movement of proteins in cell membranes D) Separate fatty acid esters E) Separate neutrallipids and phospholipids -silicic acid column chromatography

All sphingolipids are derivatives of ceramide.

Regions on cell membranes called lipid rafts form because

Proteins that transport water across cell membranes are called aquaporins.

Which is not a similarity between active transport proteins and enzymes?

The arrangement of lipid bilayers and other components is the basis for the currently widely accepted description which is called the

The toxins from cholera and whooping cough both interfere with the proper functioning of .

Transport of ions and small molecules through a bacterial membrane pore requires energy from an ATP to ADP conversion.

In a typical eukaryotic plasma membrane

In signal transduction what is an effector enzyme?

Lipids derived from cholesterol aid digestion and absorption of other lipids such as triacylglycerols.

The formation of a specialized lipid vesicle for the transport of a toxic protein out of a cell is called endocytosis.

Match each technique with its purpose." A) separate groups of neutrallipids B) diacylglycerolseparation based on chain length and degree of unsaturation C) Lateral movement of proteins in cell membranes D) Separate fatty acid esters E) Separate neutrallipids and phospholipids -gas chromatography

Aspirin can alleviate clinical symptoms because it inhibits the synthesis of certain eicosanoids.

Cholesterol is converted to cholesteryl esters for in cells and are more, less) hydrophobic than glycerophospholipids.

The proportion of lipids to proteins is the same in different cell membranes.

Very large molecules macromolecules) can be transported across membranes by .

Trans fatty acids have physical properties like those of

Fatty acids required in the diet of mammals are called

Triacylglycerols cannot form lipid bilayers because they