,SCIENCE 14 FINAL EXAM REVIEW: COMPLETE STUDY GUIDE + PRACTICE QUESTIONS &
VERIFIED ANSWERS (A+ GUARANTEED)
🔬 PRACTICE QUESTIONS WITH ANSWERS & RATIONALES
1. What is the primary function of the cell membrane?
A. To produce energy
B. To store DNA
C. To control what enters and leaves the cell
D. To break down food
Correct Answer: C. To control what enters and leaves the cell
Rationale:
The cell membrane is selectively permeable, meaning it regulates the movement of
substances in and out of the cell to maintain homeostasis.
2. Which organelle is known as the “powerhouse of the cell”?
,A. Nucleus
B. Ribosome
C. Mitochondria
D. Golgi apparatus
Correct Answer: C. Mitochondria
Rationale:
Mitochondria generate ATP (energy) through cellular respiration, which powers most cellular
activities.
3. What type of energy is stored in food?
A. Kinetic energy
B. Chemical energy
C. Thermal energy
D. Mechanical energy
Correct Answer: B. Chemical energy
Rationale:
Food stores energy in chemical bonds, which is released during digestion and cellular
respiration.
4. Which state of matter has a definite volume but no definite shape?
A. Solid
B. Liquid
C. Gas
D. Plasma
Correct Answer: B. Liquid
Rationale:
Liquids maintain a constant volume but take the shape of their container.
5. What force pulls objects toward the Earth?
, A. Magnetism
B. Friction
C. Gravity
D. Tension
Correct Answer: C. Gravity
Rationale:
Gravity is the force of attraction between masses, and it pulls objects toward the Earth’s
center.
6. Which system of the human body is responsible for transporting oxygen and nutrients?
A. Respiratory system
B. Digestive system
C. Circulatory system
D. Nervous system
Correct Answer: C. Circulatory system
Rationale:
The circulatory system (heart, blood, vessels) transports oxygen, nutrients, and waste
products throughout the body.
7. What is the boiling point of water at sea level?
A. 50°C
B. 100°C
C. 150°C
D. 0°C
Correct Answer: B. 100°C
Rationale:
At standard atmospheric pressure, water boils at 100°C.
8. Which planet is known as the Red Planet?
VERIFIED ANSWERS (A+ GUARANTEED)
🔬 PRACTICE QUESTIONS WITH ANSWERS & RATIONALES
1. What is the primary function of the cell membrane?
A. To produce energy
B. To store DNA
C. To control what enters and leaves the cell
D. To break down food
Correct Answer: C. To control what enters and leaves the cell
Rationale:
The cell membrane is selectively permeable, meaning it regulates the movement of
substances in and out of the cell to maintain homeostasis.
2. Which organelle is known as the “powerhouse of the cell”?
,A. Nucleus
B. Ribosome
C. Mitochondria
D. Golgi apparatus
Correct Answer: C. Mitochondria
Rationale:
Mitochondria generate ATP (energy) through cellular respiration, which powers most cellular
activities.
3. What type of energy is stored in food?
A. Kinetic energy
B. Chemical energy
C. Thermal energy
D. Mechanical energy
Correct Answer: B. Chemical energy
Rationale:
Food stores energy in chemical bonds, which is released during digestion and cellular
respiration.
4. Which state of matter has a definite volume but no definite shape?
A. Solid
B. Liquid
C. Gas
D. Plasma
Correct Answer: B. Liquid
Rationale:
Liquids maintain a constant volume but take the shape of their container.
5. What force pulls objects toward the Earth?
, A. Magnetism
B. Friction
C. Gravity
D. Tension
Correct Answer: C. Gravity
Rationale:
Gravity is the force of attraction between masses, and it pulls objects toward the Earth’s
center.
6. Which system of the human body is responsible for transporting oxygen and nutrients?
A. Respiratory system
B. Digestive system
C. Circulatory system
D. Nervous system
Correct Answer: C. Circulatory system
Rationale:
The circulatory system (heart, blood, vessels) transports oxygen, nutrients, and waste
products throughout the body.
7. What is the boiling point of water at sea level?
A. 50°C
B. 100°C
C. 150°C
D. 0°C
Correct Answer: B. 100°C
Rationale:
At standard atmospheric pressure, water boils at 100°C.
8. Which planet is known as the Red Planet?
