Chapter 17, Problem 19Q

A1.

Summary Introduction

To explain: The different parts of the given curve.

Introduction: The microtubules are hollow and cylindrical in structure and composed of with αβ-tubulin having two subunits such as α-tubulin and β-tubulin. The β-tubulin subunits are exposed at the plus ends and α-tubulin subunits are exposed at the minus ends.

A2.

Summary Introduction

To draw: A diagram that shows the behavior of tubulin molecules in the phase of nucleation, elongation, and equilibrium.

B.

Summary Introduction

To explain: The changes in the curve by adding centrosomes at the outset.

Introduction: The microtubules are hollow and cylindrical in structure and composed of with αβ-tubulin having two subunits such as α-tubulin and β-tubulin. The β-tubulin subunits are exposed at the plus ends and α-tubulin subunits are exposed at the minus ends.