Question

Which of the following drugs is toxic for our cells?

A. Cytochalasin B, which caps the plus end of actin filaments and prevents actin polymerization.
B. Phalloidin, which binds along actin filaments and stabilizes them.
C. Nocodazole, which binds to tubulin subunits and prevents microtubule polymerization.
D. Colchicine, which caps microtubule ends and leads to their depolymerization.
E. All of the above."

Answer 1

The drug that is toxic to our cells is Nocodazole, which binds to tubulin subunits and prevents microtubule polymerization. This inhibits cell division. Cytochalasin B, Phalloidin, and Colchicine also affect actin filaments and microtubules in different ways.

Step-by-step explanation:

The drug that is toxic to our cells is Nocodazole, which binds to tubulin subunits and prevents microtubule polymerization. This leads to the inhibition of cell division. Cytochalasin B caps the plus end of actin filaments and prevents actin polymerization. Phalloidin binds along actin filaments and stabilizes them. Colchicine caps microtubule ends and leads to their depolymerization. So, the correct answer is E. All of the above.