Biology Trivia Questions
- ❓ 79+ questions
- 🗂️ Biology
- 🎚️ Easy to expert
- ✨ Free to play
The science of life and living organisms. Play Biology trivia solo to sharpen your knowledge, or challenge a friend head-to-head in Trivia Tango — every question comes with an explanation so you learn as you play. Questions span every level, from easy warm-ups to expert-level stumpers, so there's a real challenge here however much you already know.
Already playing?
Sample Biology Quiz Questions
A mix of easy, medium and hard — questions run from warm-up to expert, so there's a real challenge at every level. Think you know the answers? Play to find out.
These organelles, once free-living bacteria that were engulfed by early eukaryotes, now produce most of a cell's ATP through oxidative phosphorylation.
Difficulty: Easy- Mitochondria
- Ribosomes
- Golgi apparatus
- Endoplasmic reticulum
This nitrogen base pairs exclusively with adenine in DNA through two hydrogen bonds, following Chargaff's rules of base pairing.
Difficulty: Medium- Guanine
- Thymine
- Cytosine
- Uracil
This AAA+ ATPase extracts ubiquitinated proteins from membranes and complexes, unfolding them for proteasomal degradation through its central pore.
Difficulty: Hard- VCP/p97
- NSF
- ClpX
- Lon protease
In this phase of cell division, chromosomes line up along the middle of the cell, attached to spindle fibers at their centromeres.
Difficulty: Easy- Prophase
- Metaphase
- Anaphase
- Telophase
This phase of cellular respiration occurs in the cytoplasm without oxygen and breaks glucose into two pyruvate molecules while producing a small net gain of ATP.
Difficulty: Medium- Glycolysis
- Krebs cycle
- Electron transport chain
- Oxidative phosphorylation
This pathway activates when double-strand breaks are sensed by the MRN complex, leading to ATM kinase activation and p53-mediated cell cycle arrest or apoptosis.
Difficulty: Hard- ATR checkpoint
- Spindle assembly checkpoint
- G1/S checkpoint
- DNA damage response (DDR)
This molecule carries amino acids to the ribosome during protein synthesis, matching its anticodon to messenger RNA codons.
Difficulty: Easy- Messenger RNA
- Ribosomal RNA
- Transfer RNA
- Small nuclear RNA
The portion of an enzyme where substrate molecules bind and undergo chemical transformation is called this.
Difficulty: Medium- Allosteric site
- Regulatory site
- Active site
- Binding pocket
Think You Know Biology?
Play a free round in your browser, learn something new with every answer, and challenge your friends to beat your score.
Or get the app