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erica [24]
3 years ago
5

Phalloidin is a toxin from a toadstool (mushroom). 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?
Biology
1 answer:
adelina 88 [10]3 years ago
6 0

Answer:

Dissociation of actin subunits occurs.

Explanation:

When we add phalloidin to a solution containing G-actin, the phalloidin binds to actin filaments more tightly as compared to actin monomers which leads to a decrease in the constant rate of dissociation of actin subunits from the ends of the filament. This dissociation stabilizes the actin filaments through the prevention of filament depolymerization. So we can conclude that addition of phalloidin to actin leads to stabilizing of actin filaments.

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The correct option is A.

Endosymbiotic theory is a theory that talks about the evolution of eukaryotic cells from prokaryotic organisms. The theory proposes that mitochondria and plastids {chloroplast}, which are found in eukaryotic cells were once prokaryotic cells. Based on this theory, an endosymbiosis of a cell with a cynaobacterium would result in a eukaryotic cell that can manufacture its own food because it contains plastids.



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3 years ago
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<u><em>NAD+ and H+ are not the same. </em></u>

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