Question 1: Biology

What is the main function of mitochondria in a cell?

A) Protein synthesis

B) Energy production (ATP)

C) Storing genetic information

D) Photosynthesis  


Question 2: Physics

If you drop a feather and a hammer on the Moon at the same time, what will happen?

A) The hammer hits first

B) The feather hits first

C) They hit the ground at the same time

D) They float forever  


Question 3: Chemistry

What is the chemical formula for table salt?

A) NaCl

B) H₂O

C) CO₂

D) HCl  


Question 4: Astronomy

What is the closest star to Earth (other than the Sun)?

A) Sirius

B) Proxima Centauri

C) Betelgeuse

D) Polaris  


Question 5: General Science

What causes the seasons on Earth?

A) The distance from the Sun changing throughout the year

B) The tilt of Earth's axis

C) The Moon's gravitational pull

D) Solar flares