1|Page
ASVAB SCIENCE POOL 2026-2027 | 200+
PRACTICE QUESTIONS & RATIONALES |
BIOLOGY | CHEMISTRY | PHYSICS | EARTH &
SPACE | HIGH-YIELD | GRADED A
## Table of Contents
1. **Biology – Cell Structure & Function** (Q1–Q25)
2. **Biology – Genetics & Evolution** (Q26–Q45)
3. **Biology – Human Body Systems** (Q46–Q70)
4. **Biology – Ecology & Ecosystems** (Q71–Q85)
5. **Chemistry – Atomic Structure & Periodic Table** (Q86–Q105)
6. **Chemistry – Chemical Bonding & Reactions** (Q106–Q125)
7. **Chemistry – Solutions, Acids & Bases** (Q126–Q140)
8. **Physics – Mechanics & Motion** (Q141–Q165)
9. **Physics – Energy, Work & Power** (Q166–Q180)
10. **Physics – Electricity, Magnetism & Waves** (Q181–Q195)
11. **Earth & Space Science** (Q196–Q210)
---
,2|Page
# Section 1: Biology – Cell Structure & Function (Q1–Q25)
**Q1.** Which organelle is known as the "powerhouse of the cell"
because it produces ATP?
A. Mitochondria
B. Nucleus
C. Ribosome
D. Golgi apparatus
**Correct Answer: A – Mitochondria**
*Rationale: Mitochondria generate ATP through cellular respiration.*
**Q2.** The primary function of the nucleus is to:
A. Store genetic material (DNA)
B. Synthesize proteins
C. Produce energy
D. Break down waste
**Correct Answer: A – Store genetic material (DNA)**
*Rationale: The nucleus contains the cell’s DNA and controls cellular
activities.*
**Q3.** Which organelle is responsible for protein synthesis?
,3|Page
A. Ribosome
B. Lysosome
C. Endoplasmic reticulum
D. Mitochondria
**Correct Answer: A – Ribosome**
*Rationale: Ribosomes translate mRNA into polypeptide chains
(proteins).*
**Q4.** The Golgi apparatus functions to:
A. Modify, sort, and package proteins
B. Digest cellular waste
C. Produce ATP
D. Synthesize lipids
**Correct Answer: A – Modify, sort, and package proteins**
*Rationale: The Golgi apparatus processes and packages proteins for
transport.*
**Q5.** Which organelle contains digestive enzymes to break down
waste and pathogens?
A. Lysosome
B. Peroxisome
, 4|Page
C. Nucleolus
D. Vacuole
**Correct Answer: A – Lysosome**
*Rationale: Lysosomes contain hydrolytic enzymes for intracellular
digestion.*
**Q6.** The fluid inside the cell (excluding organelles) is called:
A. Cytosol
B. Nucleoplasm
C. Interstitial fluid
D. Plasma
**Correct Answer: A – Cytosol**
*Rationale: Cytosol is the liquid portion of the cytoplasm.*
**Q7.** The cell membrane is described as a "fluid mosaic" because:
A. It consists of a phospholipid bilayer with embedded proteins
B. It is rigid and impermeable
C. It contains only carbohydrates
D. It is made of solid cholesterol
ASVAB SCIENCE POOL 2026-2027 | 200+
PRACTICE QUESTIONS & RATIONALES |
BIOLOGY | CHEMISTRY | PHYSICS | EARTH &
SPACE | HIGH-YIELD | GRADED A
## Table of Contents
1. **Biology – Cell Structure & Function** (Q1–Q25)
2. **Biology – Genetics & Evolution** (Q26–Q45)
3. **Biology – Human Body Systems** (Q46–Q70)
4. **Biology – Ecology & Ecosystems** (Q71–Q85)
5. **Chemistry – Atomic Structure & Periodic Table** (Q86–Q105)
6. **Chemistry – Chemical Bonding & Reactions** (Q106–Q125)
7. **Chemistry – Solutions, Acids & Bases** (Q126–Q140)
8. **Physics – Mechanics & Motion** (Q141–Q165)
9. **Physics – Energy, Work & Power** (Q166–Q180)
10. **Physics – Electricity, Magnetism & Waves** (Q181–Q195)
11. **Earth & Space Science** (Q196–Q210)
---
,2|Page
# Section 1: Biology – Cell Structure & Function (Q1–Q25)
**Q1.** Which organelle is known as the "powerhouse of the cell"
because it produces ATP?
A. Mitochondria
B. Nucleus
C. Ribosome
D. Golgi apparatus
**Correct Answer: A – Mitochondria**
*Rationale: Mitochondria generate ATP through cellular respiration.*
**Q2.** The primary function of the nucleus is to:
A. Store genetic material (DNA)
B. Synthesize proteins
C. Produce energy
D. Break down waste
**Correct Answer: A – Store genetic material (DNA)**
*Rationale: The nucleus contains the cell’s DNA and controls cellular
activities.*
**Q3.** Which organelle is responsible for protein synthesis?
,3|Page
A. Ribosome
B. Lysosome
C. Endoplasmic reticulum
D. Mitochondria
**Correct Answer: A – Ribosome**
*Rationale: Ribosomes translate mRNA into polypeptide chains
(proteins).*
**Q4.** The Golgi apparatus functions to:
A. Modify, sort, and package proteins
B. Digest cellular waste
C. Produce ATP
D. Synthesize lipids
**Correct Answer: A – Modify, sort, and package proteins**
*Rationale: The Golgi apparatus processes and packages proteins for
transport.*
**Q5.** Which organelle contains digestive enzymes to break down
waste and pathogens?
A. Lysosome
B. Peroxisome
, 4|Page
C. Nucleolus
D. Vacuole
**Correct Answer: A – Lysosome**
*Rationale: Lysosomes contain hydrolytic enzymes for intracellular
digestion.*
**Q6.** The fluid inside the cell (excluding organelles) is called:
A. Cytosol
B. Nucleoplasm
C. Interstitial fluid
D. Plasma
**Correct Answer: A – Cytosol**
*Rationale: Cytosol is the liquid portion of the cytoplasm.*
**Q7.** The cell membrane is described as a "fluid mosaic" because:
A. It consists of a phospholipid bilayer with embedded proteins
B. It is rigid and impermeable
C. It contains only carbohydrates
D. It is made of solid cholesterol
