Free ebook for biology exam revision covering cells, genetics, ecology, physiology, evolution, biotechnology, and more.
Free ebook + audiobook content
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1. Introduction to Biology
+ Exercise: What is the definition of Biology and what are some of the subdisciplines that make up this science? 3 minutes -
2. Cell Structure and Function
+ Exercise: What is the function of the nucleus within a eukaryotic cell? 3 minutes -
3. Cell Organelles
+ Exercise: Which of the following statements about cell organelles is correct? 3 minutes
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4. Cell Division: Mitosis and Meiosis
+ Exercise: What is the main difference between Mitosis and Meiosis? 3 minutes -
4.1. Cell Division: Mitosis and Meiosis: Cell Cycle
+ Exercise: What is the main difference between mitosis and meiosis? 3 minutes -
4.2. Cell Division: Mitosis and Meiosis: Mitosis
+ Exercise: What is the correct order of the phases of mitosis and what happens in each phase? 3 minutes -
4.3. Cell Division: Mitosis and Meiosis: Phases of Mitosis
+ Exercise: What is the correct sequence of the phases of mitosis? 3 minutes -
4.4. Cell Division: Mitosis and Meiosis: Importance of Mitosis
+ Exercise: What is the role of mitosis in the life of organisms? 3 minutes -
4.5. Cell Division: Mitosis and Meiosis: Meiosis
+ Exercise: What is the main difference between Meiosis I and Meiosis II? 3 minutes -
4.6. Cell Division: Mitosis and Meiosis: Phases of Meiosis
+ Exercise: What is the main difference between Anaphase I of Meiosis and Anaphase of Mitosis? 3 minutes -
4.7. Cell Division: Mitosis and Meiosis: Importance of Meiosis
+ Exercise: What is the importance of meiosis in the life of organisms? 3 minutes -
4.8. Cell Division: Mitosis and Meiosis: Differences Between Mitosis and Meiosis
+ Exercise: What are the main differences between mitosis and meiosis? 3 minutes
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5. Molecular Biology: DNA and RNA
+ Exercise: Which of the following processes is described as using DNA to create RNA, where a section of DNA is "uncoiled" and one of the strands serves as a template for the formation of an RNA molecule? 3 minutes -
5.1. Molecular Biology: DNA and RNA: Structure of DNA
+ Exercise: Which of the following statements about DNA and RNA is correct? 3 minutes -
5.2. Molecular Biology: DNA and RNA: Structure of RNA
+ Exercise: Which of the following statements about the structure of RNA is true? 3 minutes -
5.3. Molecular Biology: DNA and RNA: DNA Replication
+ Exercise: Which of the following statements is true about DNA replication? 3 minutes -
5.4. Molecular Biology: DNA and RNA: Transcription of DNA to RNA
+ Exercise: Which of the following statements best describes the relationship and roles of DNA and RNA in molecular biology? 3 minutes -
5.5. Molecular Biology: DNA and RNA: Translation from RNA to Protein
+ Exercise: What is the role of RNA in the translation of RNA to protein, a crucial process in molecular biology? 3 minutes -
5.6. Molecular Biology: DNA and RNA: Genetic Code
+ Exercise: What is the genetic code and how does it work in molecular biology? 3 minutes -
5.7. Molecular Biology: DNA and RNA: Genetic Mutation
+ Exercise: Which of the following statements is true about molecular biology and genetic mutations? 3 minutes -
5.8. Molecular Biology: DNA and RNA: Genetic Recombination
+ Exercise: What is the role of DNA and RNA nucleic acids in molecular biology? 3 minutes -
5.9. Molecular Biology: DNA and RNA: Gene Expression
+ Exercise: What is the correct sequence of gene expression processes and which molecules are involved in each step? 3 minutes -
5.10. Molecular Biology: DNA and RNA: Molecular Genetics
+ Exercise: Which of the following statements about molecular biology and molecular genetics is true? 3 minutes -
5.11. Molecular Biology: DNA and RNA: Genetic Engineering
+ Exercise: Which of the following statements about Molecular Biology and Genetic Engineering is correct? 3 minutes -
6. Protein Synthesis
+ Exercise: What is the process by which the genetic information contained in DNA is converted into proteins and what is its importance? 3 minutes -
7. Classical Genetics
+ Exercise: What is the difference between a homozygous individual and a heterozygous individual, according to Classical Genetics? 3 minutes -
8. Molecular Genetics
+ Exercise: What is the function of DNA in the organism of a living being? 3 minutes
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9. Biological Evolution
+ Exercise: Which of the following statements best describes the theory of evolution? 3 minutes -
10. Ecology and Environment
+ Exercise: What is an ecosystem according to Chapter 10: Ecology and the Environment? 3 minutes -
11. Biogeochemical Cycles
+ Exercise: Which of the following biogeochemical cycles involves the transformation of carbon dioxide into glucose and oxygen through the process of photosynthesis? 3 minutes -
12. Ecological Relations
+ Exercise: What are the types of ecological relationships that can occur between living beings in an ecosystem? 3 minutes
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13. Structure and Function of Tissues
+ Exercise: What is the function of epithelial tissue in the human body? 3 minutes -
14. Human Body Systems
+ Exercise: Which of the following systems is responsible for gas exchange, allowing for the inhalation of oxygen from the air and the exhalation of carbon dioxide, a waste product of cellular metabolism? 4 minutes -
15. Circulatory System
+ Exercise: What are the three main elements of the circulatory system? 3 minutes -
16. Respiratory System
+ Exercise: What is the main function of the human respiratory system? 3 minutes -
17. Digestive System
+ Exercise: What is the role of the digestive system in the human body and what organs make it up? 3 minutes -
18. Excretory System
+ Exercise: What is the main function of the Excretory System and what are the main components of this system in the human body? 3 minutes -
19. Nervous System
+ Exercise: What are the two main components of the human nervous system? 3 minutes -
20. Endocrine System
+ Exercise: Which of the following statements about the endocrine system is correct? 3 minutes -
21. Immune System
+ Exercise: What is the main difference between the innate immune system and the adaptive immune system? 3 minutes -
22. Human Biological Conception System
+ Exercise: What is the process that occurs after fertilization during human conception and results in the formation of a single cell known as a zygote? 2 minutes -
23. Human Embryology
+ Exercise: What is the correct sequence of steps in the human embryology process? 3 minutes
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24. Botany: Structure and Function of Plants
+ Exercise: What is the function of the different parts of a plant? 3 minutes -
25. Photosynthesis
+ Exercise: What is the main role of chlorophyll in the process of photosynthesis? 3 minutes -
26. Classification of Living Beings
+ Exercise: What is the science responsible for classifying organisms based on shared characteristics and which was developed by Carl Linnaeus in the 18th century? 3 minutes -
26.1. Classification of Living Beings: Systematic
+ Exercise: What is the hierarchy of taxonomic categories used in the classification of living beings, according to Systematics, a branch of Biology? 3 minutes -
26.2. Classification of Living Beings: Taxonomy
+ Exercise: Who was the scientist responsible for laying the foundation for modern taxonomy, and what did he introduce? 3 minutes -
26.3. Classification of Living Beings: Nomenclature
+ Exercise: What is Binomial Nomenclature in Biology and who proposed it? 3 minutes -
26.4. Classification of Living Beings: Kingdoms
+ Exercise: Which of the following kingdoms of biological classification includes single-celled organisms without a defined nucleus? 3 minutes -
26.5. Classification of Living Beings: Domains
+ Exercise: What are the three domains recognized in the biological classification of living beings? 3 minutes -
26.6. Classification of Living Beings: Hierarchical Classification
+ Exercise: What is the correct order of hierarchical classification of living beings, from the broadest to the most specific level? 3 minutes -
26.7. Classification of Living Things: Characteristics of Living Things
+ Exercise: What are the characteristics that differentiate living beings from inanimate objects, according to the text? 3 minutes -
26.8. Classification of Living Things: Classification of Living Things into Groups
+ Exercise: Which of the following kingdoms proposed by Robert Whittaker in 1969 is composed of prokaryotic single-celled organisms without a defined cell nucleus? 3 minutes -
26.9. Classification of Living Things: Classification of Living Things into Species
+ Exercise: Which of the following best describes the "biological definition of species" mentioned in the text? 3 minutes -
26.10. Classification of Living Things: Classification of Living Things into Genera
+ Exercise: What is the importance of classifying living beings into genera in taxonomy? 3 minutes -
26.11. Classification of Living Things: Classification of Living Things into Families
+ Exercise: What is a family in taxonomy, the science of classifying living things? 3 minutes -
26.12. Classification of Living Things: Classification of Living Things in Orders
+ Exercise: Which of the following is an example of an order in the biological classification of living things? 3 minutes -
26.13. Classification of Living Things: Classification of Living Things into Classes
+ Exercise: Who developed the binomial system of nomenclature, a widely accepted classification system for living things? 3 minutes -
26.14. Classification of Living Things: Classification of Living Things in Phyla
+ Exercise: What is the main feature of the phylum Mollusca and what are some of the organisms that make up it? 3 minutes -
26.15. Classification of Living Things: Classification of Living Things into Kingdoms
+ Exercise: Which of the following statements is true about classifying living things into kingdoms? 3 minutes -
26.16. Classification of Living Beings: Classification of Living Beings in Domains
+ Exercise: Which of the following correctly describes the classification of living things into domains? 3 minutes -
26.17. Classification of Living Beings: Phylogenetic Tree
+ Exercise: What is a phylogenetic tree and what is its importance in Biology? 3 minutes -
26.18. Classification of Living Things: Evolution of Living Things
+ Exercise: Who established the modern system of classifying living things and what is the name of this system? 3 minutes
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27. Viruses, Bacteria and Fungi
+ Exercise: Which of the following statements is correct about viruses, bacteria, and fungi? 3 minutes -
28. Protozoa and Invertebrates
+ Exercise: What are the characteristics of the protozoa and invertebrates covered in chapter 28 of the Biology course for ENEM? 3 minutes -
29. Vertebrates
+ Exercise: Which of the following statements is true about vertebrates? 3 minutes -
30. Brazilian Biomes
+ Exercise: What is the largest Brazilian biome and what are some of the species of flora and fauna that it shelters? 3 minutes -
31. Environmental Impacts
+ Exercise: Which of the following is a significant environmental impact discussed in Chapter 31 of the Biology eBook for ENEM? 3 minutes -
32. Biotechnology and Genetic Engineering
+ Exercise: Which of the following statements about biotechnology and genetic engineering is correct? 3 minutes -
33. Renewable Energies
+ Exercise: Which of the following statements is true about renewable energy? 3 minutes -
34. Infectious and Parasitic Diseases
+ Exercise: What are the four types of infectious and parasitic diseases mentioned in the text and how are they caused? 3 minutes -
35. Epidemiology and Public Health
+ Exercise: Which of the following statements best describes the relationship between epidemiology and public health? 3 minutes
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36. Biochemistry: Metabolism and Cellular Respiration
+ Exercise: Which of the following statements best describes the relationship between anabolism, catabolism, and cellular respiration? 3 minutes -
37. Animal Histology
+ Exercise: Which of the following statements about Animal Histology is correct? 3 minutes -
38. Zoology: Study of Animals
+ Exercise: What is the area of Biology dedicated to the study of animals, covering aspects such as structure, physiology, development, behavior, classification and distribution of species? 3 minutes -
39. Microbiology
+ Exercise: Which of the following is an important topic of study in microbiology? 3 minutes -
40. Parasitology
+ Exercise: What is the importance of studying Parasitology, and how are parasitic diseases transmitted? 3 minutes -
41. Population Genetics
+ Exercise: Which of the following concepts is NOT a factor that can cause changes in the frequency of alleles in a population, according to the study of Population Genetics? 3 minutes -
42. Mutation and Genetic Recombination
+ Exercise: What are the two fundamental processes that drive genetic diversity and evolution, as discussed in Chapter 42: Mutation and Genetic Recombination? 3 minutes -
43. Marine Biology
+ Exercise: What is the role of Marine Biology and why is it important? 3 minutes -
44. Conservation Biology
+ Exercise: Which of the following concepts is NOT a major topic covered in Conservation Biology? 3 minutes -
45. Ethology: Animal Behavior
+ Exercise: What is Ethology and what are its main areas of study? 3 minutes -
46. Plant Physiology
+ Exercise: Which of the following processes is performed by plants to convert sunlight, carbon dioxide, and water into glucose and oxygen? 3 minutes -
47. Developmental Biology
+ Exercise: What is the study focus of Developmental Biology, as discussed in chapter 47 of the Biology e-book for the ENEM exam? 3 minutes -
48. Forensic Biology
+ Exercise: Which of the following statements correctly describes forensic biology? 3 minutes -
49. Cancer Biology
+ Exercise: Which of the following processes describes the transformation of a normal cell into a cancer cell? 3 minutes -
50. Neurobiology
+ Exercise: What are the three main types of neurons and their functions? 3 minutes -
51. Endocrinology
+ Exercise: Which of the following statements is true about endocrinology and the endocrine glands? 3 minutes -
52. Genomics and Proteomics
+ Exercise: Which of the following statements correctly describes the difference between genomics and proteomics? 4 minutes -
53. Computational Biology
+ Exercise: What is Computational Biology and what are some of its applications and tools? 4 minutes -
54. Biophysics
+ Exercise: Which of the following statements best describes Biophysics? 3 minutes
About the free ebook with audio
Complete Biology Course for Exams
Build a strong, exam-focused understanding of biology with this free online ebook. It connects essential concepts across cell biology, genetics, ecology, human physiology, botany, zoology, microbiology, and modern biological sciences.
Study core biology with confidence
Start with the foundations of living systems: cells, organelles, cell cycles, mitosis, meiosis, DNA, RNA, protein synthesis, and inheritance. Clear explanations help you distinguish related concepts, understand biological processes, and use accurate scientific vocabulary in exam answers.
Connect molecules, organisms, and environments
Explore evolution, classification, ecosystems, biogeochemical cycles, ecological relationships, and environmental impacts. The ebook also examines plants, animals, microorganisms, viruses, parasites, and the diversity of life through systematic classification and phylogenetic thinking.
Review human biology and contemporary topics
Strengthen your knowledge of tissues, body systems, reproduction, embryology, immunity, infectious diseases, and public health. Advanced topics introduce biotechnology, genomics, computational biology, cancer biology, neurobiology, forensic biology, conservation, and renewable energy.
Designed for effective revision
- Consolidate major biology topics in one structured resource.
- Compare processes such as mitosis and meiosis.
- Review genetics, metabolism, physiology, and ecology for assessments.
- Relate foundational biology to current scientific applications.
Use this ebook as a focused reference for school exams and systematic biology review.
What is the difference between mitosis and meiosis?
Mitosis produces two genetically similar cells, while meiosis produces four genetically varied sex cells with half the chromosome number.
Does this biology ebook cover DNA replication and protein synthesis?
Yes. It explains DNA and RNA structure, replication, transcription, translation, genetic code, and protein synthesis.
Which human body systems are included in the ebook?
It covers circulatory, respiratory, digestive, excretory, nervous, endocrine, immune, and reproductive systems.
This ebook/audiobook includes:
5 hours and 8 minutes of audio content
Digital certificate of course completion (Free)
Exercises to train your knowledge
100% free, from content to certificate
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