High School Biology
Review core high school biology topics with quick practice quizzes. You’ll cover cells, genetics, evolution, ecology, and human body systems while building confidence for class tests and exams.
Quizzes
Mendelian genetics: monohybrid and dihybrid crosses
Test your understanding of Mendel’s laws with monohybrid and dihybrid crosses, from basic dominance to independent assortment. Work through genotype/phenotype ratios, Punnett squares, and probability questions with a mix of straightforward and multi-step problems. Choose how many questions you want and the difficulty level to match your study goals.
Photosynthesis and respiration: energy and cycles
Trace how energy moves through living systems by comparing photosynthesis and cellular respiration. You’ll connect chloroplast and mitochondria processes, follow carbon and oxygen cycling, and interpret key equations and graphs. Choose your preferred question count and difficulty to match quick review or full-unit practice.
Cell transport: diffusion, osmosis, and active pumps
Move beyond memorizing definitions and test how substances actually cross cell membranes. This mixed-difficulty quiz covers diffusion, osmosis, facilitated transport, and active pumps with scenarios and data-style questions. Choose how many questions you want and the difficulty level, then practice at your own pace with no timer.
What you'll find here
- Curated quizzes focused on High School Biology
- Difficulty spread from easy to hard
- Randomized questions with instant feedback
- Quizzes you can replay and compare on the leaderboard
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Category FAQ
How many quizzes are available?
There are 3 quizzes with 339 questions total.
Are these quizzes timed?
No. Each question has 4 options and there is no timer, so you can work at your own pace.
What topics are covered in High School Biology?
You’ll see common units like cells, genetics, evolution, ecology, and human body systems.
Can I use these for exam revision?
Yes. The 3 quizzes (339 questions) are suitable for unit tests and general exam review practice.
Do quizzes vary in difficulty and length?
Yes. Some quizzes are shorter overviews, while others are longer or more detailed, so you can choose what fits your study time.
More to explore
What you’ll practice in High School Biology
These quizzes focus on the big ideas taught in high school biology, from cell structure and metabolism to inheritance, evolution, and ecosystems.
You’ll practice reading diagrams and scenarios, recalling key definitions, and applying concepts to typical exam-style questions.
How the quizzes work
Each question has 4 answer options and there’s no timer, so you can focus on accuracy and understanding rather than speed.
Difficulty and length can vary by quiz: some sets are broad review, while others go deeper into a single unit, letting you choose quick refreshers or longer practice sessions.
Helpful biology context
Biology connects processes across scales: the same DNA code helps explain traits in a family tree, protein function in a cell, and long-term change through evolution.
- Identify organelles and match structures to functions
- Interpret genetics problems (Punnett squares, pedigrees, inheritance patterns)
- Explain photosynthesis and cellular respiration at a high level
- Distinguish mitosis vs. meiosis and link them to growth and reproduction
- Analyze food webs, energy flow, and population interactions
- Review human body systems and homeostasis concepts
Tips for getting better results
After each quiz, revisit missed questions and restate the rule or concept in your own words to lock in the reasoning.
Mix topics across sessions (for example, genetics and ecology) to improve recall and reduce confusion between similar terms.