Science has hundreds of branches, and biology—dedicated to the study of living organisms—is among the most foundational. This branch explores everything from cell and molecular structure to genetics, gene mutations, evolution, and ecology. Understanding biology is crucial to grasping how life originated and how the human body functions. With such wide-reaching applications, biology opens doors to careers in marine biology, biochemistry, genetics, biomedical innovation, and more. Whether in research labs or medical institutions, biology graduates have a wealth of paths to explore. And if you’re a high school or university student studying for biology exams, chances are you’re looking for high-quality, free online resources to help reinforce your learning.
Best Websites to Help You Study Biology on Your Own
Book private online biology courses on Superprof, as finding free resources online can be tricky, especially when we need information on a specific topic. Nowadays, many options are available for us online, and sometimes, it can be hard to pick a site with the best and latest information.
However, we've created this guide to feature biology websites worth your time. You can find a quick list of websites that will help you study, nurture the biology geek in you, and teach kids biology at home. There are countless biology study websites available today that cater to students preparing for exams, working on research, or simply aiming to understand the subject better. Below, we've prepared a list of top free online sites that contain quality information for high school, undergraduate, and graduate biology students.
The US boasts numerous high-quality websites for biology information, including those from government agencies, universities, and independent organizations. These resources cover a wide range of topics, from biodiversity and conservation to genetics and bioethics. Many sites offer access to research articles, educational materials, and interactive tools.
Keep in mind that the information on each site varies, and you need to find one that contains information on the specific biological subject you want to learn about. For example, a strong understanding of biology is essential for anyone interested in the pharmaceutical industry, where biological research plays a critical role in drug development and innovation. Biology learning websites offer structured content, interactive tools, and multimedia resources that make grasping complex topics far more manageable.
Microbe Notes
Microbe Notes is a website / blog that shares notes and information on microbiology with students. It is useful for AP biology, IB biology, and other university-level biology and microbiology courses. It is a comprehensive biology and microbiology blog developed for students, educators, and enthusiasts.
It covers topics like immunology, virology, bacteriology, parasitology, molecular biology, and laboratory techniques. Its strength lies in its clear, structured explanations, often paired with illustrations, diagrams, and comparison tables, making complex microbiological concepts easier to grasp. In addition to notes, the website offers multiple choice questions and flashcards, which are ideal for exam preparation. Whether you're revising for a quiz or doing self-study, Microbe Notes delivers reliable, organized content written with academic clarity.
Bio Ninja
Bio Ninja is a website designed to help IB biology students. It has activities, notes, summaries, and everything from the IB Biology curriculum. It is a go-to resource specifically tailored for students in the International Baccalaureate (IB) Biology curriculum. Created by a biology teacher, the site offers well-structured lesson notes, interactive diagrams, downloadable worksheets, topic summaries, and assessment tips.
Each unit in the IB syllabus is broken down into manageable, visually engaging chunks that make exam review less overwhelming. For visual learners, its diagrams and animations are particularly useful. Bio Ninja also provides topic quizzes and revision tools that encourage active recall and spaced repetition—two scientifically proven learning techniques. Whether you're aiming for a 7 in IB or simply looking for clarity on a tricky topic, Bio Ninja is one of the most student-friendly resources out there.
Biology Corner
Biology Corner is an incredible resource for both biology teachers and students to have by their side. You'll find lessons, labs, tests, and much more. It is a classroom-friendly biology education website used widely by high school teachers and students.
It houses a variety of free resources, including worksheets, lab activities, PowerPoint presentations, practice quizzes, and lesson plans.
Topics range from introductory biology to more advanced anatomy and physiology.
Its materials are commonly aligned with U.S. biology curricula, making it ideal for test prep and day-to-day learning.
Teachers benefit from the site's editable documents and ready-made units, while students can use interactive simulations and study guides.
Whether you're homeschooling, tutoring, or teaching a full class, Biology Corner offers practical, organized content to support biology learning at all levels.
PubMed
PubMed is a scholarly resource that houses a vast collection of biology research papers, articles, and journals, providing a wealth of academic resources for researchers and students.
It is a world-renowned database maintained by the U.S. National Library of Medicine and the National Institutes of Health (NIH).
It provides access to over 35 million citations and abstracts from biomedical and life sciences journals, including many full-text articles.
While it’s geared toward graduate students, researchers, and healthcare professionals, even undergraduate students can benefit from PubMed’s search tools and filters.
Topics range from molecular biology and clinical research to public health and genetics. With its peer-reviewed content and advanced search capabilities, PubMed remains one of the most trusted sources for anyone conducting in-depth biology research or writing an academic paper.
Biology Online
Biology Online is a comprehensive knowledge hub providing a variety of resources, quizzes, articles, and interactive content, tailored for students and enthusiasts, covering various aspects of biology. It is a user-friendly biology encyclopedia that provides a wide array of definitions, explanations, and articles covering various branches of biology such as botany, zoology, genetics, and molecular biology.
Websites can be used to supplement traditional classroom learning by providing additional explanations, practice problems, and interactive exercises.
In addition to dictionary entries and tutorials, it offers helpful features like biology forums, quizzes, and recent biology news. It’s a great supplemental resource for students who need quick access to definitions or want to deepen their understanding of a concept outside their textbooks. The platform is updated regularly and includes contributions from biology professionals and enthusiasts. For bite-sized, reliable information, Biology Online is a smart site to bookmark.
Coursera
Coursera offers online biology courses from top universities, enabling students to engage in in-depth studies and gain valuable insights for excelling in the field of biology. It partners with top universities and institutions to offer online biology courses, certificates, and specializations. Through video lectures, reading materials, discussion forums, and assessments, users can engage with subjects like molecular biology, human physiology, and the science of stem cells. Coursera offers a wide array of biology courses, from introductory to specialized topics. Popular options include:
Introductory Biology
- 📚 Introduction to Biology: Ecology, Evolution, & Biodiversity
- 📚 Introduction to Biology: Ecology
- 📚 Contemporary Biology
Specialized Biology
- 📚 Cancer Biology
- 📚 Genomic Data Science
- 📚 Systems Biology and Biotechnology
- 📚 Chemical Biology
- 📚 Marine Biology
- 📚 Microbiology
- 📚 Introduction to Genomic Technologies
Courses come from respected institutions such as Stanford, Johns Hopkins, and Duke. While many courses are free to audit, students can also pay for certificates that bolster their resumes. Whether you're brushing up on basic biology or diving into niche fields like bioinformatics or epidemiology, Coursera is an excellent platform for flexible, high-quality biology education.
Do you love reading and are a biology major? Find ahead a list of the best biology books to help you study.
Science.gov
Science.gov is a powerful search engine that connects users to scientific and technical information from across the U.S. government. Managed by the Office of Science and Technical Information, it offers access to 200 million pages of science information and over 60 databases from federal agencies such as NASA, the USDA, EPA, and DOE. Biology-related searches can lead to detailed reports on genetics, environmental science, public health, biodiversity, and more.
Whether you're a student seeking reliable sources for a research paper or a teacher in need of credible material, Science.gov offers an exceptional gateway to peer-reviewed, government-vetted scientific content that you won’t find on standard search engines.
American Society for Biochemistry and Molecular Biology (ASBMB)
ASBMB is the digital home of the American Society for Biochemistry and Molecular Biology, a key organization advancing research and education in these life science fields. The site features peer-reviewed journals, funding resources, career advice, and teaching materials. It’s particularly valuable for students pursuing careers in lab research or academia, offering fellowships, travel grants, and a job board.
ASBMB has an accreditation program for Biochemistry and Molecular Biology (BMB) degree programs, with 79 programs accredited across various institution types. Accredited programs are found in research universities (42%), master's-granting universities (29%), and bachelor's-granting institutions (24%).
Their education section includes classroom tools and webinars, while advocacy updates keep users informed about science policy developments. ASBMB also hosts annual meetings and conferences that serve as networking opportunities. Whether you're a student or researcher, ASBMB offers a direct connection to the professional world of biochemistry and molecular biology.
Websites with the Best Biology Information
Below, is a list of online sites that have all kinds of biology content for the biology geek in you. You can use them as a resource to learn about different biological topics like DNA, genetic material, ecology, human life, biochemistry, and more. These are also considered to be the best biology websites for high school students, to simplify scientific concepts without sacrificing depth, helping young learners stay ahead in class.
| Biology Website | Pros | Cons |
|---|---|---|
| MicrobeNotes | In-depth microbiology notes, illustrations, MCQs, and flashcards—ideal for AP/IB, and university students. | Limited primarily to microbiology topics; may not cover broader biology subjects. |
| BioNinja | Tailored IB curriculum content with well-structured notes, diagrams, quizzes, and revision tools using active recall methods. | Focused exclusively on the IB program—less useful for non-IB students. |
| Biology Corner | Classroom-ready resources such as worksheets, labs, presentations, quizzes, and simulations aligned with U.S. curricula. | Resource formatting can feel dated; may lack depth for advanced learners. |
| Khan Academy | Comprehensive video lessons. Interactive quizzes for self-assessment. | Depth of certain topics may vary. Self-paced nature requires self-discipline. |
| PubMed | Vast database of scientific articles. Access to the latest research | Advanced search features may have a learning curve. Primarily text-based content |
| Biology Online | Interactive tools and quizzes. Engaging forums for discussions | Variability in content dept. Some users may prefer more structured lessons. |
| Coursera | Diverse array of biology courses. Certifications from top institutions | Cost may be a concern for some learners. The time commitment for courses varies. |
| ASBMB | Provides journals, career guidance, educational webinars, and funding/travel grants for students. | Primarily focused on biochemistry/molecular biology and may require membership for full access. |
| Science.gov | Allows access to 200 million pages of U.S. government science info and data across federal agencies. | Search interface is basic and best for research; less tailored for students or teachers. |
| Nature Education | High-quality educational materials. Trusted source for biological content | Some materials may be more suited for advanced learners. Limited interactivity compared to some platforms |
Remember that there are many other options available online, but we've picked the ones on the list because they have great ratings and reviews.
- Biology Dictionary: Biologydictionary.net is a site whose goal is to provide updated explanations of biological terms and topics for anyone who wishes to learn about it. They have concept articles, comparison articles, articles with basic definitions, and much more.
- Easy Biology Class: Easybiologyclass.com is a site where you will learn about biology, and you can prepare for different examinations with it.
- Microscope Master: Microscopemaster.com is a website with new articles uploaded every week. Some topics cover cell biology, microbiology, biological processes, the latest news, the development of new technology, and more.
- Biology Online: Biologyonline.com is a site geared towards anyone who wants to learn more about the subject. It is for teachers, students, or anyone interested in these topics. It's like accessing a library filled with all kinds of biology-related content.
If you’re searching for the best websites to study biology, focus on platforms that combine academic accuracy with engaging visuals and student-friendly tools.
Are you interested in studying biology? Here is a list of the best biology apps and podcasts.
Interactive Websites to Teach Biology to Kids
If you're looking for free biology tools online for kids, you must focus your search on any website with interactive and colorful content. Kids respond to colors, movement, and songs, and any interaction they can have with the content will become a good tool to learn.
Biology is a big part of our education, and as soon as your kids start learning and familiarizing themselves with it, the better they will do during the more difficult classes in high school or college.
Biology-related searches and educational content on the web have experienced a significant uptrend, with a 30% increase in user engagement over the past year.
Science is a big part of human life, and if you make your kids feel comfortable and curious about science, you have a better chance of them picking a scientific career path in the future. Working with a biology private tutor can help you not only achieve your academic goals but also gain an understanding of your strengths and weaknesses as a student.
Here is a list of some online resources you could use with your kids:
- Discovery Mindblown: Discoverymindblown.com is a site created by The Discovery Channel designed to teach kids about science. It has video games, and there's also an app you can download on the App Store or Google Play.
- National Geographic Explorer Classroom: Nationalgeographic.org connects students with real-life scientists and researchers. They host live video events where students from all over the globe can engage in conversations.
- Earth School from TedEd: Ed.ted.com has 30 quests for students around the world to celebrate, explore, and connect with nature.
- The American Museum of Natural History: The YouTube channel of The American Museum of Natural History has amazing content for kids and high school students.
Master Biology at Home with Superprof
In today's fast-paced society, learning and teaching science can be tricky, which is why finding online tools can be extremely helpful. A well-organized biology website for students can be an invaluable supplement to classroom learning, especially during revision or project work. Find the best biology tutor here on Superprof.
Many renowned scientists started their journeys as students, and now they work for a top biology institute or organization, and that could be you! In addition, most of these successful biologists now share their wealth of knowledge through social media like TikTok and YouTube channels.
Making informed choices about your learning preferences is crucial. Superprof offers a wide range of interactive content, scholarly articles, and comprehensive courses to enhance your understanding of biology. We hope every resource and web tool we've given you in this article helps you in your journey of learning biology. Remember, you can always review every site and decide which suits you well. Finally, keep in mind that there are many other tools on the web, and we've just given you a brief list of some of the best-known tools, but these are not the only ones available.
For more biology resources, check out our article on biology revision resources to help you at school.
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Amazing blog post thanks for with us.Excellent information, good contribution to the blog.