A very unstable protein in E. coli; it is degraded by a specific protease called FtsH (HflB), encoded by the hfl gene.

#Question id: 1660

#Unit 4. Cell Communication and Cell Signaling

Cleavage of IgG by papain produces:

#Question id: 26474

#Unit 3. Fundamental Processes

#Question id: 1559

#Unit 4. Cell Communication and Cell Signaling

Which of cytokine is responsible for Class Switch IgM into IgE

#Question id: 5660

#Unit 5. Developmental Biology

Following statement regarding to acrosome reaction in sea urchin.

A. Activation of the acrosome reaction serves as a barrier to intraspecies fertilizations.

B. The acrosome reaction is initiated by sulfate-containing polysaccharides in the egg jelly that bind to specific receptors located directly above the acrosomal vesicle on the sperm cell membrane.

C. These polysaccharides are often highly species specific, but egg jelly factors from one species of sea urchin generally activate the acrosome reaction in closely related species.

D. The elevated Ca2+ level in a relatively basic cytoplasm triggers the fusion of the acrosomal membrane with the adjacent sperm cell membrane, releasing enzymes that can lyse a path through the egg jelly to the vitelline envelope.

Which of the following statements are correct?

#Question id: 19738

#Unit 3. Fundamental Processes