Achieve Essentials for OpenStax Biology will help you master Biology. Achieve offers 2000 questions that test a range of skills and topics in the Majors Biology course. Each question includes detailed, wrong answer feedback that targets students misconceptions, as well as fully-worked out solutions to reinforce concepts.
Achieve Essentials
Complete assignments, engage with course materials, prepare for exams and more in order to succeed in class.
Learn MoreTable of Contents
Chapter 1 The Study of Life
Chapter 2 The Chemical Foundation of Life
Chapter 3 Biological Macromolecules
Chapter 4 Cell Structure
Chapter 5 Structure and Function of Plasma Membranes
Chapter 6 Metabolism
Chapter 7 Cellular Respiration
Chapter 8 Photosynthesis
Chapter 9 Cell Communication
Chapter 10 Cell Reproduction
Chapter 11 Meiosis and Sexual Reproduction
Chapter 12 Mendels Experiments and Heredity
Chapter 13 Modern Understandings of Inheritance
Chapter 14 DNA Structure and Function
Chapter 15 Genes and Proteins
Chapter 16 Gene Expression
Chapter 17 Biotechnology and Genomics
Chapter 18 Evolution and the Origin of Species
Chapter 19 The Evolution of Populations
Chapter 20 Phylogenies and the History of Life
Chapter 21 Viruses
Chapter 22 Prokaryotes: Bacteria and Archaea
Chapter 23 Protists
Chapter 24 Fungi
Chapter 25 Seedless Plants
IChapter 26 Seed Plants
Chapter 27 Introduction to Animal Diversity
Chapter 28 Invertebrates
Chapter 29 Vertebrates
Chapter 30 Plant Form and Physiology
Chapter 31 Soil and Plant Nutrition
Chapter 32 Plant Reproduction
Chapter 33 The Animal Body: Basic Form and Function
Chapter 34 Animal Nutrition and the Digestive System
Chapter 35 The Nervous System
Chapter 36 Sensory Systems
Chapter 37 The Endocrine System
Chapter 38 The Musculoskeletal System
Chapter 39 The Respiratory System
Chapter 40 The Circulatory System
Chapter 41 Osmotic Regulation and Excretion
Chapter 42 The Immune System
Chapter 43 Animal Reproduction and Development
Chapter 44 Ecology and the Biosphere
Chapter 45 Population and Community Ecology
Chapter 46 Ecosystems
Chapter 47 Conservation Biology and Biodiversity
Chapter 2 The Chemical Foundation of Life
Chapter 3 Biological Macromolecules
Chapter 4 Cell Structure
Chapter 5 Structure and Function of Plasma Membranes
Chapter 6 Metabolism
Chapter 7 Cellular Respiration
Chapter 8 Photosynthesis
Chapter 9 Cell Communication
Chapter 10 Cell Reproduction
Chapter 11 Meiosis and Sexual Reproduction
Chapter 12 Mendels Experiments and Heredity
Chapter 13 Modern Understandings of Inheritance
Chapter 14 DNA Structure and Function
Chapter 15 Genes and Proteins
Chapter 16 Gene Expression
Chapter 17 Biotechnology and Genomics
Chapter 18 Evolution and the Origin of Species
Chapter 19 The Evolution of Populations
Chapter 20 Phylogenies and the History of Life
Chapter 21 Viruses
Chapter 22 Prokaryotes: Bacteria and Archaea
Chapter 23 Protists
Chapter 24 Fungi
Chapter 25 Seedless Plants
IChapter 26 Seed Plants
Chapter 27 Introduction to Animal Diversity
Chapter 28 Invertebrates
Chapter 29 Vertebrates
Chapter 30 Plant Form and Physiology
Chapter 31 Soil and Plant Nutrition
Chapter 32 Plant Reproduction
Chapter 33 The Animal Body: Basic Form and Function
Chapter 34 Animal Nutrition and the Digestive System
Chapter 35 The Nervous System
Chapter 36 Sensory Systems
Chapter 37 The Endocrine System
Chapter 38 The Musculoskeletal System
Chapter 39 The Respiratory System
Chapter 40 The Circulatory System
Chapter 41 Osmotic Regulation and Excretion
Chapter 42 The Immune System
Chapter 43 Animal Reproduction and Development
Chapter 44 Ecology and the Biosphere
Chapter 45 Population and Community Ecology
Chapter 46 Ecosystems
Chapter 47 Conservation Biology and Biodiversity