Exam 4: The Structure and Function of the Plasma Membrane

Figure 4.12 shows the oligosaccharides attached to membrane lipids thus forming gangliosides that determine the A, B and O blood groups. Which statement regarding the arrangement of sugars is INCORRECT?

The temperature at which a lipid bilayer shifts from a fluid state to a crystalline gel is called the _____________.

Tetrahydrocannabinol, the active ingredient in marijuana, binds to receptors located in the ____________ terminals of certain brain neurons. It lowers the likelihood that these neurons will release ___________.

Why did liposomes not work against diseases as hoped when they were first tried?

Which proteins move the farthest during SDS-polyacrylamide gel electrophoresis?

Using the nucleotide sequence of a gene, which of the following can be learned from a computer-based (computational)analysis of the primary amino acid structure of a membrane protein?

GPI-anchored proteins play an essential role in maintaining the health and integrity of the nervous and cardiovascular systems. When synthesis is altered or defective, diseases such as ______________ can be observed in humans. (Select all that are correct choices)

How are the new "stealth liposomes" protected from immune system phagocytes?

___________ is a process that strengthens certain synapses by repeated neuron stimulation over a short time period.

Neurotechnology bioengineering goals include: (Select all correct choices)

You modify the gene for an integral membrane protein so that the cytoplasmic portions of the protein are deleted. When the gene is inserted in cells, what happens to the mobility of this protein in the membrane?

Phosphatidylethanolamine is concentrated in the inner leaflet of the plasma membrane and tends to promote the curvature of the membrane, which is important in _________.

What is the distinguishing characteristic of a P-type pump?

Usually, optical tweezers drag integral proteins a limited distance before they encounter a barrier that causes their release; upon release, they typically spring backward. What does this suggest?

You fuse a mouse cell and a human cell and then treat the cell with anti-mouse or anti-human protein-directed antibodies that are covalently linked to fluorescent dyes (antibodies to mouse proteins show green fluorescence; antibodies to human proteins show red fluorescence). What does the cell look like after one hour?

Which disease is caused by the deterioration of the myelin sheath?

Once the structure of one member of a membrane protein family has been determined, researchers can usually apply a strategy called __________ to learn about the structure and activity of other members of the family.

What is thought to be important in maintaining the native structure of the Kv channel membrane protein and promoting its function as a voltage-gated channel?

What features of the cochlea make providing implants to improve hearing less challenging that attempting to restore mobility?