Exam 9: Lipids and Biological Membranes

Considering the characteristics of common fatty acids found in animals described in the text,which of the structures shown below would you consider the most rare fatty acid if found in animals?

Which of the following amino acids from an integral membrane protein would likely contact the membrane?

The biconcave shape of erythrocytes which maximizes rapid diffusion of oxygen is primarily maintained by

A researcher is developing a new drug for the treatment of influenza.Based on the information presented in the text about the influenza virus,which of the following drug reactions describes the action of this new drug?

The protein that forms a transmembrane pore that allows growing polypeptides to pass through the RER membrane is called the ______.

Identify the compound below:

Matching -A steroid-derived hormone that must be activated by hydroxylation,______ regulates Ca²⁺ metabolism.

Which of the following correctly describes the usefulness of SNAREs? (I)They are essential for proper post-translation processing. (II)They are a critical element in the function of the secretory pathway. (III)They are effective at overcoming electrostatic repulsion between vesicle membranes. (IV)They facilitate anchoring between vesicle membranes.

The _________,which is found embedded in the endoplasmic reticulum,is a _______ protein.

Matching -A glycerophospholipid in which the C1 substituent linkage forms a vinyl ether that is more easily oxidized than its ester counterpart is called a ______.

Which of the following statements describes one reason that plant oils are generally healthier for human consumption than animal fats?

I-cell disease results in psychomotor retardation,skeletal deformities and death.Which of the following is true regarding this disease?

Transmembrane proteins (I)are predominantly constructed of a single hydrophobic α-helix. (II)are often constructed from bundles of hydrophobic $\alpha$ -helices. (III)are sometimes constructed from β-barrels with hydrophobic interiors and exteriors. (IV)may have transmembrane helices identified by the free energy of transfer to water.

Matching -The myelin sheath contains high levels of ______.

Which experiment listed below did NOT verify the fluid mosaic model of membranes?

Cholesterol

Which of the following structures correctly represents a glycerophospholipid?

While fatty acids are most often formed by the condensation of __-carbon units,isoprenoids are assembled from __-carbon units.

In bacteria,phospholipids are synthesized:

Which of the following is (are)NOT found as covalently attached anchors in lipid-linked proteins?