THE WORDWHEEL GUIDE
Biology vocabulary game
Biology connects the small structures inside organisms to the environments where they live. This pack begins with cells and tissues, moves through inheritance vocabulary, and includes words used to describe biological molecules and reproduction.
Updated September 25, 2026
For beginning biology students and curious readers of life science.
What to notice as you learn
A gene is a segment of DNA; an allele is a version at a genomic location; a trait is a characteristic. Traits can reflect many genes and environmental influences. A tissue is a group of cells, while an organ combines tissues for a function.
When you find a word, connect it to a level of organization: molecule, cell, tissue, organ, organism, or environment. For inheritance terms, describe a relationship without assuming that every trait comes from just one gene.
How this topic game works
There are 15 levels in this starter pack. Each accepts only words from the Biology glossary below. Use the required highlighted letter and each tile at most once. Find 3–5 matching terms on the same wheel to complete each level, with no timer. Keep collecting words until the count reaches the goal, then choose Next level. Each level offers extra valid answers beyond the goal. Any glossary term that fits the board counts, so a clue is a suggestion rather than a required answer.
Clues offer definitions and optional letter reveals. Three reveals are shared across a board and saved if you leave. Read the full meaning after a discovery for its example sentence and reference. Levels repeat after the last one. Review vocabulary is optional: use it to recall discovered words from their meanings, and keep a personal list of terms to practise again.
Biology glossary: 43 terms to practise
These are the pack’s complete vocabulary list. The notes and examples below are original introductory explanations by Wordwheel; references provide fuller context. A word may have other meanings outside this subject.
- cell
- The basic structural and functional unit of living organisms.
- Example: A leaf contains many kinds of cells.
- OpenStax · Biology 2e
- gene
- A DNA sequence whose information contributes to a functional product.
- Example: The gene contains instructions for a biological product.
- NHGRI · Genetics glossary
- tissue
- A group of cells organized to perform related functions.
- Example: Muscle tissue contracts to produce movement.
- OpenStax · Biology 2e
- organ
- A structure made of tissues working together for a function.
- Example: The heart is an organ that pumps blood.
- OpenStax · Biology 2e
- enzyme
- A biological catalyst, usually a protein, that speeds a reaction.
- Example: An enzyme helps break down a food molecule.
- OpenStax · Biology 2e
- habitat
- The place and conditions in which an organism lives.
- Example: A pond provides a habitat for the frog.
- OpenStax · Biology 2e
- trait
- An observable or measurable characteristic of an organism.
- Example: Leaf shape is a plant trait.
- NHGRI · Genetics glossary
- allele
- One of two or more DNA sequence versions at a particular genomic location.
- Example: An individual may carry two different alleles at a location.
- NHGRI · Genetics glossary
- protein
- A molecule built from amino-acid chains that fold into functional shapes.
- Example: The protein helps transport a substance across a membrane.
- NHGRI · Genetics glossary
- life
- The state associated with organisms and processes such as metabolism and reproduction.
- Example: Biology studies the diversity of life.
- OpenStax · Biology 2e
- virus
- An infectious agent that uses a host cell to make more copies of itself.
- Example: A virus relies on the machinery of an infected cell.
- OpenStax · Biology 2e
- spore
- A reproductive cell that can develop into a new organism without fusion with another cell.
- Example: The fern releases spores.
- OpenStax · Biology 2e
- stem
- A plant structure supporting leaves or flowers and transporting materials.
- Example: Water moves through tissues in the stem.
- OpenStax · Biology 2e
- root
- A plant organ that commonly anchors the plant and absorbs water and minerals.
- Example: The root takes up water from soil.
- OpenStax · Biology 2e
- leaf
- A plant organ usually specialized for photosynthesis.
- Example: The leaf absorbs light.
- OpenStax · Biology 2e
- seed
- A plant embryo with a protective covering and a food supply.
- Example: The seed germinates under suitable conditions.
- OpenStax · Biology 2e
- sepal
- One of the outer floral parts that often protect a developing bud.
- Example: The sepal surrounds the unopened flower.
- OpenStax · Biology 2e
- petal
- A floral part often involved in attracting pollinators.
- Example: The brightly coloured petal attracts an insect.
- OpenStax · Biology 2e
- stoma
- A small pore in a plant surface that regulates gas exchange; plural stomata.
- Example: Guard cells control the opening of a stoma.
- OpenStax · Biology 2e
- plant
- An organism belonging to the plant kingdom.
- Example: The plant grows new leaves.
- OpenStax · Biology 2e
- sap
- Fluid transported within a plant’s vascular tissues.
- Example: Sugars travel in phloem sap.
- OpenStax · Biology 2e
- egg
- A female reproductive cell, or the structure containing it in some animals.
- Example: Fertilization involves an egg and a sperm.
- OpenStax · Biology 2e
- nest
- A structure or place used by an animal for eggs or young.
- Example: The bird builds a nest.
- OpenStax · Biology 2e
- host
- An organism that supports a parasite, pathogen or other associated organism.
- Example: The virus replicates inside its host.
- OpenStax · Biology 2e
- niche
- The ecological role and resource use of an organism in its environment.
- Example: The species occupies a different niche from its competitor.
- OpenStax · Biology 2e
- biome
- A large ecological region characterized by climate and typical organisms.
- Example: A tropical rainforest is a biome.
- OpenStax · Biology 2e
- mate
- A reproductive partner, or to pair for reproduction.
- Example: The bird seeks a mate.
- OpenStax · Biology 2e
- gamete
- A reproductive cell that can fuse with another in fertilization.
- Example: A sperm is a gamete.
- OpenStax · Biology 2e
- zygote
- The cell formed when two gametes fuse.
- Example: The zygote begins dividing.
- OpenStax · Biology 2e
- sex
- A biological category associated with reproductive organization and roles.
- Example: The lesson compares sex determination in different species.
- OpenStax · Biology 2e
- eye
- A sensory organ that detects light.
- Example: The eye contains light-sensitive cells.
- OpenStax · Biology 2e
- ear
- A sensory organ involved in hearing and, in many vertebrates, balance.
- Example: The inner ear contains structures for balance.
- OpenStax · Biology 2e
- limb
- An appendage such as an arm, leg, wing or fin.
- Example: The forelimb has been modified into a wing.
- OpenStax · Biology 2e
- vein
- A vessel carrying blood toward the heart, or a vascular strand in a leaf.
- Example: The vein returns blood toward the heart.
- OpenStax · Biology 2e
- nerve
- A bundle of nerve-cell fibres that carries signals.
- Example: The nerve carries sensory information.
- OpenStax · Biology 2e
- bone
- A mineralized connective tissue forming much of the vertebrate skeleton.
- Example: Bone supports the body and protects organs.
- OpenStax · Biology 2e
- mitosis
- Division of a cell’s nucleus that separates duplicated chromosomes into two sets.
- Example: Mitosis distributes chromosomes to two new nuclei.
- OpenStax · Biology 2e
- meiosis
- Cell division that reduces chromosome number and produces genetically varied haploid cells.
- Example: Meiosis contributes to variation in sexual reproduction.
- OpenStax · Biology 2e
- birth
- The emergence of young from a parent in live-bearing organisms.
- Example: The mammal’s young begin independent breathing after birth.
- OpenStax · Biology 2e
- site
- A particular location where a biological interaction or process occurs.
- Example: The substrate binds at the enzyme’s active site.
- OpenStax · Biology 2e
- rust
- A plant disease caused by certain parasitic fungi.
- Example: The leaf shows signs of rust infection.
- OpenStax · Biology 2e
References and further reading
These organizations are reference sources, not sponsors or endorsers of the game. Follow their material to explore the subject beyond this short pack.
Continue your vocabulary practice
Topic discoveries and review choices are saved only in this browser. Practice scores stay separate from public rankings. You can return to the original general-vocabulary game at any time.