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 behavior of chromosomes during meiosis, and the differences between the first and second meiotic divisions
Describe the cellular events that take place during meiosis
Explain the differences between meiosis and mitosis
Explain the mechanisms within the meiotic process that produce genetic variation among the haploid gametes

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

Biology, The Cell is an unit of study no. 3 of the Biology full course. It is grounded on studying cells, including cell structure, structure and function of plasma membranes, metabolism, cellular respiration, photosynthesis, cell communication, and cell reproduction.

This course will present the student with a detailed overview of a cell's main components and functions. The course is roughly organized into four major areas: the cell membrane, cell nucleus, cell cycle, and cell interior. The student will approach most of these topics straightforwardly, from a molecular and structural point of view. Upon completion of this course, the student will be able to: explain what a eukaryotic cell is, identify the components of the cell, and describe how a cell functions; explain how cell membranes are formed; identify the general mechanisms of transport across cell membranes; list the different ways in which cells communicate with one another--specifically, via signaling pathways; define what the extracellular matrix is composed of in different cells and how the extracellular matrix is involved in forming structures in specific tissues; list the components of the cell's cytoskeleton and explain how the cytoskeleton is formed and how it directs cell movements; explain the fundamentals of gene expression and describe how gene expression is regulated at the protein level; define and explain the major cellular events involved in mitosis and cytokinesis; identify the major cellular events that occur during meiosis; describe the eukaryotic cell cycle and identify the events that need to occur during each phase of the cell cycle; identify all of the major organelles in eukaryotic cells and their respective major functions. (Biology 301)