Biology Quizzes
A biology quiz tests your understanding of living systems - cells, genetics, ecology, anatomy, and evolution. QuizFlex hosts free biology quizzes for high school, AP, and college-level study, all auto-graded with instant explanations.
Free biology quizzes covering cell biology, genetics, evolution, ecology, and human anatomy. Pick a quiz, take it instantly, and review your answers with AI-generated explanations.
Bacteria: The Ultimate Microbiology Challenge
AI-generated quiz: Bacteria: The Ultimate Microbiology Challenge
8th Grade Biology Challenge
AI-generated quiz: 8th Grade Biology Challenge
Exploring Ocular Microbiology Essentials
AI-generated quiz: Exploring Ocular Microbiology Essentials
Cell Biology Basics: OSN Prep
AI-generated quiz: Cell Biology Basics: OSN Prep
Biology Fundamentals: Essential Concepts Review
AI-generated quiz: Biology Fundamentals: Essential Concepts Review
Reproduction & Hormones: A Biology Review
AI-generated quiz: Reproduction & Hormones: A Biology Review
Biology: Explore Life's Diversity and Unity
AI-generated quiz: Biology: Explore Life's Diversity and Unity
Ocean Life and Marine Biology
Difficulty: medium. 10 questions.
Biology Class 9: Federal Board Knowledge
AI-generated quiz: Biology Class 9: Federal Board Knowledge
Microbiology: Fundamentals and Key Concepts
AI-generated quiz: Microbiology: Fundamentals and Key Concepts
Molecular Biology Mastery Challenge
AI-generated quiz: Molecular Biology Mastery Challenge
Molecular Biology Concepts Unlocked
AI-generated quiz: Molecular Biology Concepts Unlocked
Cellebiologi: Organeller, Funksjoner og Prosesser
AI-generated quiz: Cellebiologi: Organeller, Funksjoner og Prosesser
Cellular Anatomy: Explore the Inner World
AI-generated quiz: Cellular Anatomy: Explore the Inner World
Cell Structure: Know Your Building Blocks
AI-generated quiz: Cell Structure: Know Your Building Blocks
Cellular Energy Dynamics: Expert Challenge
AI-generated quiz: Cellular Energy Dynamics: Expert Challenge
Eukaryotes vs. Prokaryotes: Cell Showdown
AI-generated quiz: Eukaryotes vs. Prokaryotes: Cell Showdown
Cell Death: Apoptosis & Beyond
AI-generated quiz: Cell Death: Apoptosis & Beyond
Cell Division: Growth and Heredity Challenge
AI-generated quiz: Cell Division: Growth and Heredity Challenge
Cell Biology: Structure, Function, and Life
AI-generated quiz: Cell Biology: Structure, Function, and Life
Cell Walls: Structure and Function Challenge
AI-generated quiz: Cell Walls: Structure and Function Challenge
Solar Cell Structure: Power Up Your Knowledge
AI-generated quiz: Solar Cell Structure: Power Up Your Knowledge
Cell Organelles: Structure and Function
AI-generated quiz: Cell Organelles: Structure and Function
Genetics & Evolution: Mastering Inheritance
AI-generated quiz: Genetics & Evolution: Mastering Inheritance
Frequently asked questions about biology quizzes
How can I prepare for an AP Biology exam with quizzes?
Take a mix of cumulative and unit-specific biology quizzes 4-6 weeks before the exam. Focus on the four big ideas - Evolution, Energetics, Information Storage, and Systems Interactions. Use spaced repetition: re-take any quiz you scored under 80% on after 48 hours.
What topics does a typical biology quiz cover?
Most biology quizzes cover cell structure, mitosis/meiosis, DNA replication and protein synthesis, Mendelian and molecular genetics, evolution by natural selection, ecosystem dynamics, and human body systems (circulatory, nervous, endocrine).
Are these biology quizzes free?
Yes. Every quiz on this page is free to take with no signup required. You can also create your own biology quiz from a textbook PDF or YouTube lecture in under a minute.
Can I create a custom biology quiz from my notes?
Yes - upload any biology PDF, paste lecture notes, or drop in a YouTube video URL and our AI will generate a quiz with multiple-choice, short-answer, and fill-in-the-blank questions tailored to that content.