NEET MCQ Test 2 — Questions and Answers
Question 1: Which organelle is known as the 'powerhouse of the cell'?
- Nucleus
- Mitochondria (Correct answer)
- Ribosome
- Golgi apparatus
Correct answer: Mitochondria
Mitochondria produce ATP through cellular respiration, earning the name 'powerhouse of the cell'.
Question 2: The process by which plants convert light energy into chemical energy is called:
- Respiration
- Transpiration
- Photosynthesis (Correct answer)
- Fermentation
Correct answer: Photosynthesis
Photosynthesis uses sunlight, water, and CO2 to produce glucose and oxygen in chloroplasts.
Question 3: What is the atomic number of Carbon?
- 6 (Correct answer)
- 8
- 12
- 14
Correct answer: 6
Carbon has 6 protons in its nucleus, giving it an atomic number of 6.
Question 4: Which law states that the pressure of a gas is inversely proportional to its volume at constant temperature?
- Charles's Law
- Avogadro's Law
- Boyle's Law (Correct answer)
- Gay-Lussac's Law
Correct answer: Boyle's Law
Boyle's Law states P1V1 = P2V2 at constant temperature, showing pressure-volume inverse relationship.
Question 5: The SI unit of electric charge is:
- Ampere
- Volt
- Coulomb (Correct answer)
- Ohm
Correct answer: Coulomb
The Coulomb (C) is the SI unit of electric charge, equivalent to the charge of approximately 6.24 × 10^18 electrons.
Question 6: Which blood group is considered the universal donor?
- A
- B
- AB
- O (Correct answer)
Correct answer: O
Blood group O negative lacks A, B, and Rh antigens, making it safe to donate to any blood type.
Question 7: DNA replication occurs during which phase of the cell cycle?
- G1 phase
- S phase (Correct answer)
- G2 phase
- M phase
Correct answer: S phase
DNA synthesis and replication occurs during the S (Synthesis) phase of interphase.
NEET MCQ Test 2
Which organelle is known as the 'powerhouse of the cell'?