GED Math set 2
September 3, 2025GED Social Studies set 2
September 3, 2025
GED Science
1. What is the basic unit of life?
- A. Atom
- B. Cell
- C. Molecule
- D. Tissue
Answer: B. Cell
Explanation: The cell is the smallest unit that can perform all life processes.
2. Which process do plants use to make their own food?
- A. Respiration
- B. Digestion
- C. Photosynthesis
- D. Fermentation
Answer: C. Photosynthesis
Explanation: Photosynthesis converts sunlight, water, and carbon dioxide into glucose and oxygen.
3. What is the chemical formula for water?
- A. H₂O
- B. CO₂
- C. O₂
- D. NaCl
Answer: A. H₂O
Explanation: Water consists of two hydrogen atoms and one oxygen atom.
4. Which planet is closest to the Sun?
- A. Venus
- B. Earth
- C. Mercury
- D. Mars
Answer: C. Mercury
Explanation: Mercury is the smallest and innermost planet in our solar system.
5. What type of rock is formed from cooled lava?
- A. Sedimentary
- B. Metamorphic
- C. Igneous
- D. Mineral
Answer: C. Igneous
Explanation: Igneous rocks form from the cooling and solidification of magma or lava.
