Biology
Which organelle is responsible for producing most of a cell's ATP?
Mitochondria
What happens to an object's acceleration if the net force acting on it is doubled?
It doubles
What happens to the particles of a substance when its temperature increases?
They move faster
Which ancient civilization developed democracy in the city-state of Athens?
Ancient Greece
What term describes a situation where demand is greater than supply?
Shortage
What type of blood cell is primarily responsible for fighting infections?
White blood cells
Which type of energy does a moving object possess?
Kinetic energy
Which subatomic particle determines the atomic number of an element?
Proton
What major event officially ended the Western Roman Empire?
Fall of Rome
What is the main purpose of a central bank raising interest rates?
To reduce inflation
Which part of the brain is mainly responsible for balance and coordination?
Cerebellum
Why does a falling object accelerate as it moves toward Earth?
Gravity
What type of reaction occurs when an acid reacts with a base?
Neutralization
Which treaty formally ended World War I between Germany and the Allied Powers?
Treaty of Versailles
What economic concept describes the value of what you give up when making a choice?
Opportunity cost
What process allows plants to lose water vapor through tiny openings in their leaves?
Transpiration
What happens to the resistance of most metals when their temperature increases?
It increases
Why does increasing the surface area of a solid usually make it react faster?
More particles are exposed
Why was the Berlin Wall built in 1961?
To prevent East Germans from fleeing to the West
What happens to the purchasing power of money when inflation rises significantly?
It decreases
During which stage of cell division do chromosomes line up at the center of the cell?
Metaphase
Which principle explains why a ship can float despite being much heavier than the water it displaces?
Archimedes' principle
Which gas is produced when an acid reacts with most metals?
Hydrogen
Which revolution resulted in the overthrow of Russia's imperial government in 1917?
Russian Revolution
What is the term for a market dominated by a small number of large firms?
Oligopoly