Practice 1
Which organelle is often called the powerhouse of the cell?
Answer: The mitochondrion
Mitochondria carry out much of cellular respiration, converting energy from nutrients into ATP that cells can use.
Science Quiz
Biology, chemistry and physics explained one question at a time.
Medium · 0 questions available
Choose a topic
Quiz guide
Learn about Science
Photosynthesis, cell biology, the periodic table and the forces that hold the universe together. Every Science question comes with a short explanation, so a wrong answer still teaches you something.
Science overview
Science is a systematic way of investigating the natural world. Observations lead to questions, testable explanations and experiments whose results can be checked by others. Scientific knowledge is reliable not because it never changes, but because claims must remain open to evidence, measurement and revision.
Biology studies living organisms, chemistry examines substances and their transformations, and physics describes matter, energy, motion and forces. These fields overlap constantly: photosynthesis is biological, chemical and physical at the same time. Understanding a few foundational ideas can therefore unlock questions across several branches of science.
Quizorian science rounds cover cells, body systems, ecosystems, atoms, elements, reactions, electricity, forces and space-related physics. Questions favour established concepts and clear terminology. Explanations show why the correct answer fits the evidence, helping players distinguish similar terms rather than simply memorising a letter or phrase.
Did you know?
- DNA in most living organisms uses four chemical bases to encode genetic information.
- The periodic table is organised by increasing atomic number, the number of protons in an atom's nucleus.
- Light travels through a vacuum at about 299,792 kilometres per second.
- Water expands when it freezes, which is why ice is less dense than liquid water.
- Energy can change form, but in a closed system its total amount is conserved.
Sample practice questions
Try each question before revealing the explanation in your mind. These examples show the kind of knowledge this category develops.
Practice 2
What is the chemical symbol for gold?
Answer: Au
Au comes from aurum, the Latin word for gold. Chemical symbols are internationally standardised and do not always match the English name.
Practice 3
What force keeps planets in orbit around the Sun?
Answer: Gravity
The Sun's gravity continually accelerates planets toward it while their forward motion carries them along curved orbital paths.
Science quiz FAQ
- What topics are included in the Science quiz?
- This category covers biology, cells, anatomy, ecosystems, chemistry, elements, reactions, physics, energy, forces and measurement. Each round selects 10 questions, so the exact mix can change whenever you play.
- How difficult is the Science quiz?
- Its overall level is medium, although an individual round can include both familiar facts and tougher details. Explanations help you learn from every answer.
- How many questions are in a round?
- A standard Quizorian category round contains 10 questions. The short format is designed for quick practice while still covering a useful range of ideas.
- How can I improve my Science score?
- Learn the underlying process, not only the term. If you can explain how something works, you can answer several variations of the same idea.