Which of the following statements about microtubules is not true? and explain why each statement is true or not. -Microtubules Display Dynamic Instability -Microtubule Dynamics Can Be Modified by Drugs -Motor Proteins Drive Intracellular Transport -The Centrosome Is the Major Microtubule-organizing Center in Animal Cells -Dynamic Instability Is Driven by ATP Hydrolysis -Microtubules Are Hollow Tubes with Structurally Distinct Ends
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Microtubules are highly dynamic structures that undergo rapid growth and shrinkage, a process known as dynamic instability. Show more…
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Which of the following are true statements concerning microtubules? They form the spindle apparatus needed to move chromosomes during mitosis. They are used to change a cell's shape. They are the primary components of the cytoskeleton. All of the listed responses are correct.
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Which of the following statements are correct? Explain your answers. A. Centrosomes are replicated before $\mathrm{M}$ phase begins. B. Two sister chromatids arise by replication of the DNA of the same chromosome and remain paired as they line up on the metaphase plate. C. Interpolar microtubules attach end-to-end and are therefore continuous from one spindle pole to the other. D. Microtubule polymerization and depolymerization and microtubule motor proteins are all required for DNA replication. E. Microtubules nucleate at the centromeres and then connect to the kinetochores, which are structures at the centrosome regions of chromosomes.
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