Exam 15: Cell Signaling and Signal Transduction: Communication Between Cells

Each TNFR1 receptor subunit has a cytoplasmic domain with a segment of about 70 amino acids that mediates protein-protein interactions. This domain of the receptor is referred to as the ______ domain.

What can cause the stockpiles of intracellular calcium ions to be depleted?

Accessory proteins that maintain monomeric G proteins in an inactive state by inhibiting GDP-GTP exchange are called:

Where are the olfactory receptor cells located?

Why do colds cause us to lose some of our appreciation for the taste of food?

What happens to cells if receptors are degraded once they are internalized?

Genes that enable viruses to transform normal cells into tumor cells are called _________.

If a hormone receptor is degraded along with its ligand after internalization, what is the effect on the cell's ability to respond to the hormone?

Which heterotrimeric G proteins are less well characterized than the other G protein families and are associated with excessive cell proliferation and malignant transformations when activated inappropriately?

GRKs are a small family of ________ protein kinases, most of which are localized to the _______ surface of the plasma membrane.

What is the name of the extracellular messenger protein with an ability to kill tumor cells that also serves as an apoptotic stimulus?

In what form do animal cells store glucose?

Which signaling molecules are nonpolar molecules containing 20 carbons that are derived from a fatty acid named arachidonic acid?

Viruses that carry their genetic information in the form of RNA are called ________.

How is the distribution of free calcium ions in the living cell detected?

Where are steroid receptors generally located and where do they bind the steroid hormone once it enters the cell?

Accessory proteins that bind to inactive monomeric G proteins and stimulate dissociation of the bound GDP are called:

What allows efficient recognition ofextracellular signaling molecules by receptros on the responding cell's surface?

How does Viagra enhance erectile function of the penis?

From which molecule are steroids derived?