After entering intestinal epithelial cells and dissociating from the A2 polypeptide, the A1 peptide of cholera toxin catalyzes the ADP-ribosylation of the , inhibiting its activity. This leads to higher levels of ,which binds to and activates PKA. Phosphorylation of the CFTR Cl- channel by PKA leads to the unfortunate symptoms of cholera.

Which statement best describes a typical difference that could be found between the "analysis" and "conclusion" sections of a lab report? a) only the "conclusion" describes errors that occurred during the experiment, and only the "analysis" section suggests further research.b) only the "analysis" section includes specific data comparisons, and only the "conclusion" section suggests further research.c) only the "analysis" section discusses whether the original hypothesis was supported, and both sections include graphs of data.d) only the "conclusion section discusses whether the original hypothesis was supported, and both sections suggest further research.(the answer is b i just took the test)

The is an estimate of the fewest number of organisms a population needs to avoid extinction. this measurement will most if the number of offspring each female in the population produces increases. if the population's this measurement will most likely increase. 1 population density, minimum viable population, carrying capacity 2 decrease, be unaffected, increase 3 death rate increase, dead rate decrease

What is the most important inorganic material for livings things? ! due tomorrow!