The ras protein functions as a molecular switch that is set to its "on" state by other proteins that cause it to expel its bound gdp and bind gtp. a gtpase-activating protein reset the switch to the "off" state by inducing ras to hydrolyze its bound gtp to gdp much more rapidly than it would without this encouragement. thus, ras works like a light switch that one person turns on and another turns off. you are given a mutant cell that lacks the gtpase-activating protein. what abnormalities would you expect to find in the way in which ras activity responds to extracellular signals?

Ras activity would be significantly slower in its response to extracellular signals.

Explanation:

• GTPase acts as a catalyst in converting RasGTP (active state) to RasGDP (inactive state)

• A mutant lacking the GTPase activating protein cannot activate GTPase so thee will nit be any functional GTPase

• if GTPase is not present then RasGTP may be expdessed for longer periods of time and there will be a lag until it eventually switches "off)

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )