Science Board Exam Challenge
Test your understanding of core science concepts, from cell biology to electricity and ecosystems.
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Quiz Questions & Answers
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Question 1: Which cell structure releases usable energy from glucose during cellular respiration?
Golgi apparatus
Lysosome
Mitochondrion
Ribosome
Question 2: A plant is kept in darkness for several days. Which process is directly reduced?
Water absorption
Photosynthesis
Cellular respiration
Mineral uptake
Question 3: What happens to the particles of a substance as it changes from liquid to gas?
They stop moving
They move farther apart
They change into new atoms
They become larger
Question 4: Which observation is strongest evidence that a chemical reaction has occurred?
A solid is crushed into powder
A solid forms when two solutions mix
A liquid freezes into a solid
A substance dissolves in water
Question 5: A 12-newton force pushes a 3-kilogram object. What acceleration results?
15 m/s²
4 m/s²
36 m/s²
9 m/s²
Question 6: Why does a straw appear bent where it enters a glass of water?
Light refracts between water and air
Light stops at the water surface
Water reflects all light upward
The straw changes shape underwater
Question 7: In a food chain, what is the main role of decomposers?
Break down dead organisms
Produce sunlight for plants
Hunt every consumer
Make food from minerals
Question 8: In a series circuit, what happens if one bulb is removed?
Only the removed bulb goes out
Current bypasses the missing bulb
The circuit opens and all bulbs go out
The other bulbs become brighter