Clickers_14-18

Clickers_14-18 - Q. The C c for actin filaments is 0.2 M ....

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Unformatted text preview: Q. The C c for actin filaments is 0.2 M . If the concentration of free G- actin subunits is 0.4 M, the pointed end of the actin filament will ________ while the barbed end __________. A. Grow; also grows B. Grow; shrinks C. Shrink; also shrinks D. Shrink; grows E. Remain constant; grows Clicker Question Q. Phalloidin is a toxin from a toadstool (mushroom) that binds to actin filaments and prevents depolymerization. You are studying actin dynamics and the effect of phalloidin. You add G-actin and ATP to a test tube and allow the reaction to come to equilibrium. This produces the light scattering plot below. When you add phalloidin, what will happen to the line? A. Stay level B. Go up continuously C. Go up to a new equilibrium and stay there D. Go down to zero E. Go down to a new equilibrium above zero and stay there Add Phalloidin here t=0 add ATP Light scattering time A C D B E Actin polymerization: Listeria motility X Focus slit of UV light through microscope fluorescent Q. You do the experiment, releasing caged rhodamine-...
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Clickers_14-18 - Q. The C c for actin filaments is 0.2 M ....

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