Medium
Biology
Cells, Genes & Evolution
From the inside of a cell to the logic of natural selection.
Sample question
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What is generally considered the basic unit of life?
Biology
Cells, inheritance and how living things work.
Biology is the study of the only kind of matter that copies itself, and almost every question in it comes back to that fact. This category covers the cell and its components, how information passes between generations, and the mechanism Darwin identified that connects every living thing to every other. It takes in both the microscopic and the whole-organism scale. The explanations aim to show how the levels fit together, since biology is far easier to hold onto as a connected story than as separate vocabulary lists for cells, genetics and evolution.
Difficulty mix
New to Biology? Start here
Ecosystems & Food Webs
Who eats whom, what happens to the energy along the way, and why removing one species can change everything.
1 easy
3 medium
1 hard
6–9 min each
5 quizzes in Biology
Medium
Biology
Inside the Living Cell
Ten questions on the machinery packed inside a single cell, from ribosomes to the membrane that holds it together.
Sample question
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Which cell structure assembles proteins from amino acids?
Hard
Biology
Genes, Alleles & Inheritance
Base pairs, codons, alleles and the arithmetic of what gets passed on — ten harder questions on genetics.
Sample question
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In DNA, which base always pairs with adenine?
Medium
Biology
Evolution & Natural Selection
How the mechanism actually works, what it acts on, and the evidence that convinced biologists it does.
Sample question
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On which ship did Charles Darwin make the voyage that shaped his thinking?
Easy
Biology
Ecosystems & Food Webs
Who eats whom, what happens to the energy along the way, and why removing one species can change everything.
Sample question
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What is an organism that breaks down dead material called?
Questions
About Biology quizzes
How many Biology quizzes are there?
5 published quizzes in this subject, 50 questions in total. Every one is researched, written and checked by hand.
How hard are they?
The mix here is 1 easy, 3 medium and 1 hard. Difficulty is about how obscure the answers are, not how fast you have to be — there is no timer on any quiz.
How long does one take?
About 7 minutes on average, ranging from 6 to 9. Playing every biology quiz would take roughly 1 hour.
Which one should I start with?
"Ecosystems & Food Webs" is the gentlest way in — 10 questions, about 6 minutes, rated easy.
Do I need an account?
No. Every quiz is free and playable straight away. An optional free account only saves your scores across devices.
Do you explain the answers?
Yes — every question has a short explanation of why the right answer is right, shown the moment you answer, whether you got it or not.