Concepts of Biology Textbook

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About this app

Concepts of Biology is designed for the typical introductory biology course for nonmajors, covering standard scope and sequence requirements. The text includes interesting applications and conveys the major themes of biology, with content that is meaningful and easy to understand. The book is designed to demonstrate biology concepts and to promote scientific literacy.


* Complete Textbook by OpenStax
* Multiple Choices Questions (MCQ)
* Essay Questions Flash Cards
* Key-Terms Flash Cards

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Unit 1. The Cellular Foundation of Life
Introduction to Biology
Themes and Concepts of Biology
The Process of Science
1. Chemistry of Life
1.1. The Building Blocks of Molecules
1.2. Water
1.3. Biological Molecules
2. Cell Structure and Function

2.1. How Cells Are Studied
2.2. Comparing Prokaryotic and Eukaryotic Cells
2.3. Eukaryotic Cells
2.4. The Cell Membrane
2.5. Passive Transport
2.6. Active Transport
3. How Cells Obtain Energy

3.1. Energy and Metabolism
3.2. Glycolysis
3.3. Citric Acid Cycle and Oxidative Phosphorylation
3.4. Fermentation
3.5. Connections to Other Metabolic Pathways
4. Photosynthesis

4.1. Overview of Photosynthesis
4.2. The Light-Dependent Reactions of Photosynthesis
4.3. The Calvin Cycle
Unit 2. Cell Division and Genetics
6. Reproduction at the Cellular Level

6.1. The Genome
6.2. The Cell Cycle
6.3. Cancer and the Cell Cycle
6.4. Prokaryotic Cell Division
7. The Cellular Basis of Inheritance

7.1. Sexual Reproduction
7.2. Meiosis
7.3. Errors in Meiosis
8. Patterns of Inheritance

8.1. Mendel’s Experiments
8.2. Laws of Inheritance
8.3. Extensions of the Laws of Inheritance
Unit 3. Molecular Biology and Biotechnology
9. Molecular Biology

9.1. The Structure of DNA
9.2. DNA Replication
9.3. Transcription
9.4. Translation
9.5. How Genes Are Regulated
10. Biotechnology

10.1. Cloning and Genetic Engineering
10.2. Biotechnology in Medicine and Agriculture
10.3. Genomics and Proteomics
Unit 4. Evolution and the Diversity of Life
11. Evolution and Its Processes

11.1. Discovering How Populations Change
11.2. Mechanisms of Evolution
11.3. Evidence of Evolution
11.4. Speciation
11.5. Common Misconceptions about Evolution
12. Diversity of Life

12.1. Organizing Life on Earth
12.2. Determining Evolutionary Relationships
13. Diversity of Microbes, Fungi, and Protists

13.1. Prokaryotic Diversity
13.2. Eukaryotic Origins
13.3. Protists
13.4. Fungi
14. Diversity of Plants

14.1. The Plant Kingdom
14.2. Seedless Plants
14.3. Seed Plants: Gymnosperms
14.4. Seed Plants: Angiosperms
15. Diversity of Animals

15.1. Features of the Animal Kingdom
15.2. Sponges and Cnidarians
15.3. Flatworms, Nematodes, and Arthropods
15.4. Mollusks and Annelids
15.5. Echinoderms and Chordates
15.6. Vertebrates
Unit 5. Animal Structure and Function
16. The Body’s Systems

16.1. Homeostasis and Osmoregulation
16.2. Digestive System
16.3. Circulatory and Respiratory Systems
16.4. Endocrine System
16.5. Musculoskeletal System
16.6. Nervous System
17. The Immune System and Disease

17.1. Viruses
17.2. Innate Immunity
17.3. Adaptive Immunity
17.4. Disruptions in the Immune System
18. Animal Reproduction and Development

18.1. How Animals Reproduce
18.2. Development and Organogenesis
18.3. Human Reproduction
Unit 6. Ecology
19. Population and Community Ecology

19.1. Population Demographics and Dynamics
19.2. Population Growth and Regulation
19.3. The Human Population
19.4. Community Ecology
20. Ecosystems and the Biosphere

20.1. Energy Flow through Ecosystems
20.2. Biogeochemical Cycles
20.3. Terrestrial Biomes
20.4. Aquatic and Marine Biomes
21. Conservation and Biodiversity
21.1. Importance of Biodiversity
21.2. Threats to Biodiversity
21.3. Preserving Biodiversity
Updated on
Mar 20, 2018

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4.5
26 reviews
A Google user
March 15, 2020
Love the quizzes and flashcards. Also love that there's an ask feature, but don't like that all the threads from the entire textbook are displayed on every page, there should at least be an option to collapse/hide them.
9 people found this review helpful
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Uchenna Okoro
December 15, 2021
Very wonderful app that provide all that is needed in biology except that it paid no attention to sense organs.
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Masoud Vaseghi
November 9, 2021
Really great book. I saw this book before at openstax website. Amazing and informative as well as user friendly app. Thanks
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