A neutrophil is genetically engineered so that Rac no longer antagonizes Rho. What happens to the cell?

The “Bcl2” gene was first identified in B cell lymphoma cancer cells, where a chromosome translocation causes excessive production of Bcl2 protein (which suppresses apoptosis). How does excess Bcl2 protein suppress apoptosis in B-cell lymphoma tumors?

You are a cancer researcher, and want know what phase of the cell cycle a set of ductal cells are in. Since the best way to determine this is by measuring the level of a protein that varies in concentration depending on the cell cycle stage, you decide to measure the level of:

Rho GTPase enhances retraction of the trailing edge of the neutrophil in all of the following ways, EXCEPT: 

Which steps of cellular respiration occur within mitochondria? (check all that apply)

A researcher experimentally reduces the level of Ca++ in a developing chicken embryo just before the neural tube closes. You know that neural tube closure requires a functional “adhesion belt” in order to form. What do you hypothesize will happen?

What is the function of tight junctions in the epithelial cells lining the gut lumen?

(Reminder: “G proteins” are made up of G-alpha, G-beta, and G-gamma subunits.) How do G-alpha subunits become active when G-protein coupled receptors (GPCRs) bind ligand?

Where are receptors for signaling ligands located?

What form of signaling happens during extrinsic apoptosis?