Biology 2e is designed to cover the scope and sequence requirements of a typical two-semester biology course for science majors. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology includes rich features that engage students in scientific inquiry, highlight careers in the biological sciences, and offer everyday applications. The book also includes various types of practice and homework questions that help students understand—and apply—key concepts. The 2nd edition has been revised to incorporate clearer, more current, and more dynamic explanations, while maintaining the same organization as the first edition. Art and illustrations have been substantially improved, and the textbook features additional assessments and related resources.

By the end of this section, you will be able to do the following:

Describe the three stages of interphase
Discuss the behavior of chromosomes during karyokinesis/mitosis
Explain how the cytoplasmic content is divided during cytokinesis
Define the quiescent G0 phase

The Cell Biology Project at the University of Arizona provides an explanation of mitosis, DNA basics, diagrams and a practice exercise.

This pathway provides an introduction to the cell cycle and how its regulation is important to normal cell division. Cancer is often caused by unregulated cell division. For a deeper look at this topic, we recommend the pathway Cell Reproduction from the OpenStax textbook Biology for AP® Courses.

Poses and answers the question, "What is (and is not) mitosis?" An overview with images of the phases of mitosis, plus a mitosis animation.

This animated explanation introduces the concept of mitosis by reviewing the research of Walther Flemming.

This resource provides a detailed diagram of animal, bacterial and plant cells and viral structure. Also included are detailed drawings, with definitions, of each of the cellular organelles.

Learn the processes that happen in interphase to prepare the cell for division on this webpage. Webpage includes an audio lesson as well as an image. [0:23]

Online mitosis activity offers the student the opportunity to identify, classify, calculate, and graph the phases of mitosis. Explanations of each phase, actual cells are displayed for classifing and gathering data in this comprehensive tutorial.