Biology courses online from MIT and Harvard | edX Learn biology Learning biology can help you qualify for roles like forensic science technician or microbiologist. Discover the different educational paths and career options in biology. Create an account Are you curious to learn how life works at the molecular, cellular, and ecological levels? Explore core concepts in biology, from DNA and evolution to ecosystems and physiology. Whether you're a beginner or refreshing your knowledge, you'll gain the tools to understand living systems through expert-led courses and immersive content. Start your journey — enroll today and qualify for a career in biology. Why learning biology matters Learning biology allows you to understand the complex systems that sustain life, from how your body works to how ecosystems function. You can use this knowledge in careers that foster scientific literacy, critical thinking, and an appreciation for the natural world. Learning biology can: Deepen your understanding of how living organisms and ecosystems interact. Help you gain insight into health, genetics, evolution, and the environment. Empower you to make informed choices and influence medicine, conservation, and even food production. Grow your environmental awareness and responsible decision-making. Develop your analytical and problem-solving skills through observation and experimentation. Strengthen your scientific literacy when interpreting health and research news. "edX courses play an important role in providing the opportunity for continuing education throughout life." Salvador Sala Pla | Entrepreneur | Alicante, Spain | Introduction to Biology Browse online Biology certificateTitle Find new interests and advance your career opportunities Stand out in your field Use the knowledge and skills you have gained to drive impact at work and grow your career. 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Biology classes explore the structure, function, and interactions of living organisms. Students learn how life develops, adapts, and evolves, from the cellular level to entire ecosystems. Courses often blend theory with hands-on lab work, teaching you to analyze data, conduct experiments, and think critically about real-world biological challenges such as disease and climate change. Common topics and courses Cellular biology and genetics Human anatomy and physiology Ecology and environmental science Evolution and biodiversity Microbiology and immunology Molecular biology and biochemistry Choosing the right biology program for you When selecting a biology program, it's important to evaluate your career goals, your interests, and how much time and money you can invest in achieving them. Luckily, edX offers various options to help you learn biology on a schedule and budget that works for you. Courses Courses teach general or foundational concepts in biology, which is perfect for those just starting, transitioning into a biology-related career, or learning biology for personal development. Program timeline: 4–16 weeks Certificates Certificate programs help build your knowledge in a particular area of biology, which can be valuable if you're looking to specialize. Program timeline: Two months to one year Executive education programs Designed for professionals and leaders, these advanced programs focus on applying theoretical concepts to real-world challenges. They often integrate practical, high-level leadership skills, such as problem-solving, communication, and conflict management, into the curriculum. Program timeline: Six weeks Degrees Degree programs provide a more comprehensive education in biology for those seeking more advanced or skilled roles in academia or biology-related industries. Program timeline: 2–4 years Jobs in biology Because biology is a broad field of study, having a biology background can open doors to careers in numerous industries, including biomedical research, healthcare, conservation, biotechnology, agriculture, and even zoology. Below, find jobs that you can pursue by learning biology, including salary and job outlook data from the Bureau of Labor Statistics (BLS). Forensic science technician Forensic science technicians assist criminal investigations by collecting, testing, and examining crime scene evidence. These professionals work in local, state, or federal law enforcement agencies or medical testing laboratories. Required education: Bachelor's degree; police academy training may be required Median annual salary (2024): $67,440 Projected job growth (2024–34): +13% Microbiologist Microbiologists study microorganisms and conduct research to help solve issues related to individual, public, and environmental health. These professionals work in medical labs, pharmaceutical development organizations, and public health agencies. Required education: Bachelor's degree; an advanced degree may be required Median annual salary (2024): $87,330 Projected job growth (2024–34): +4% Veterinarian Veterinarians provide medical care for animals by diagnosing health issues, prescribing treatments, and preventing disease. These professionals work in veterinary offices, zoos, aquariums, and research labs. An undergraduate degree in biology can help future veterinarians learn the skills needed to pursue a doctor of veterinary medicine (DVM) degree, which is necessary for licensure. Required education: DVM Median annual salary (2024): $125,510 Projected job growth (2024–34): +10% Biomedical engineer Biomedical engineers design and build medical devices or equipment to assist with diagnosing, treating, and managing health conditions. These professionals work for healthcare facilities, equipment manufacturers, and research laboratories. Required education: Bachelor's degree Median annual salary (2024): $106,950 Projected job growth (2024–34): +5% Learn biology online with edX Are you ready to delve deeper into the world of biology? Then sign up for a free online course through edX or get started today. Explore biology programs More opportunities for you to learn We've added 500+ learning opportunities to create one of the world's most comprehensive free-to-degree online learning platforms. Frequently asked questions about biology classes What is biology class about? A biology class explores the science of life, including how organisms grow, function, and interact with their environments. You study topics like cells, genetics, evolution, and ecosystems, learning how living systems connect and adapt. Is biology a difficult class? Biology can be challenging because it involves memorization, data analysis, and understanding complex systems. However, with curiosity, consistent study habits, and hands-on practice, most students find it engaging and manageable. This is especially true when students can connect lessons to real-world applications. What is the importance of learning biology? Biology's focus on the structure, function, and processes of all living organisms can help you understand and solve problems related to medicine, public health, animal care, and the environment. The study of biology is vital to the success of not only humans but all life on our planet. What are some common biology majors or areas of specialization? Some specialized areas or fields of study in biology include cell and molecular biology, biochemistry, genetics, nutrition, immunology, microbiology, neuroscience, and physiology. Biology also encompasses non-human organisms with specializations in zoology, botany, marine biology, ecology, evolutionary biology, and wildlife conservation. How much do careers in biology pay? Professionals in biology earn a median annual salary of $75,000, according to 2024 data from the BLS. BLS data shows that within the field of biology, 34% of workers are employed in healthcare practitioner and technical occupations. These roles earned a median annual salary of $83,090 in 2024. Note that many roles in healthcare may require you to complete specialized programs with clinical requirements in order to qualify for licensure or certification.