Biology Basics: Fun & Fascinating Facts
Published Jun 23, 2026 · Updated Jul 16, 2026 · Editorial Team
Test your knowledge of cell biology, genetics, ecology, and human anatomy with 10 engaging multiple‑choice questions.
❓ 10 Questions
⏱️ 5 Minutes
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Question 1 of 100 correct
⏱️ 05:00
QUESTION 1
Which organelle is known as the powerhouse of the cell?
All Questions in This Quiz
Here is every question waiting for you in this 10-question Science & Tech quiz. Play it in the interactive player above to lock in your answers, see your score and read the explanations.
Which organelle is known as the powerhouse of the cell?
- A. Nucleus
- B. Mitochondria
- C. Ribosome
- D. Lysosome
In photosynthesis, which molecule is the primary electron donor?
- A. Water
- B. Carbon dioxide
- C. Glucose
- D. Oxygen
During DNA replication, the enzyme that synthesizes new DNA strands by adding nucleotides is called:
- A. DNA ligase
- B. Helicase
- C. DNA polymerase
- D. Primase
Which phase of mitosis involves the alignment of chromosomes along the cell's equatorial plate?
- A. Prophase
- B. Metaphase
- C. Anaphase
- D. Telophase
The human heart has how many chambers?
- A. 2
- B. 3
- C. 4
- D. 5
Which plant hormone is primarily responsible for promoting stem elongation and seed germination?
- A. Abscisic acid
- B. Ethylene
- C. Gibberellins
- D. Cytokinin
In an ecosystem, which level of the food chain consists of organisms that break down dead organic matter?
- A. Producers
- B. Primary consumers
- C. Secondary consumers
- D. Decomposers
Enzymes lower the activation energy of a reaction by:
- A. Increasing temperature
- B. Providing an alternative reaction pathway
- C. Changing the equilibrium constant
- D. Consuming substrate
Which type of immunity is acquired after vaccination and involves the production of memory cells?
- A. Innate immunity
- B. Passive immunity
- C. Active immunity
- D. Cell‑mediated immunity only
The process by which a species changes over generations due to differential reproductive success is called:
- A. Genetic drift
- B. Gene flow
- C. Natural selection
- D. Mutation
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