PiCAT Verification Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationales 2027
Q&A | Instant Download Pdf
General Science
1. Which organelle is primarily responsible for producing energy in a cell?
A. Nucleus
B. Ribosome
C. Mitochondrion
D. Cell wall
Answer: C. Mitochondrion
Rationale: Mitochondria produce most of the cell's usable energy in the
form of ATP through cellular respiration.
2. What is the basic unit of heredity?
,A. Cell
B. Gene
C. Tissue
D. Chromosome
Answer: B. Gene
Rationale: A gene is a segment of DNA that contains information
influencing a particular inherited characteristic.
3. Which gas makes up the largest percentage of Earth's atmosphere?
A. Oxygen
B. Carbon dioxide
C. Nitrogen
D. Hydrogen
Answer: C. Nitrogen
Rationale: Nitrogen makes up approximately 78% of Earth's atmosphere,
while oxygen accounts for about 21%.
4. What force pulls objects toward Earth's surface?
A. Friction
B. Gravity
,C. Magnetism
D. Inertia
Answer: B. Gravity
Rationale: Gravity is the attractive force between masses and causes
objects near Earth to accelerate toward its surface.
5. Water boils at sea level at approximately what temperature?
A. 32°F
B. 100°F
C. 180°F
D. 212°F
Answer: D. 212°F
Rationale: At standard atmospheric pressure, water boils at 212°F, or
100°C.
6. Which part of a plant absorbs most water and minerals from the soil?
A. Flower
B. Leaf
C. Root
D. Stem
Answer: C. Root
, Rationale: Roots absorb water and dissolved minerals from the soil and
anchor the plant.
7. What is the process by which plants convert light energy into chemical
energy?
A. Respiration
B. Photosynthesis
C. Fermentation
D. Digestion
Answer: B. Photosynthesis
Rationale: Photosynthesis uses sunlight, carbon dioxide, and water to
produce glucose and oxygen.
8. Which substance has a pH of approximately 7?
A. Strong acid
B. Weak acid
C. Neutral substance
D. Strong base
Answer: C. Neutral substance
Rationale: A pH of 7 is considered neutral at approximately room
temperature; pure water is a common example.
Questions And Correct Answers
(Verified Answers) Plus Rationales 2027
Q&A | Instant Download Pdf
General Science
1. Which organelle is primarily responsible for producing energy in a cell?
A. Nucleus
B. Ribosome
C. Mitochondrion
D. Cell wall
Answer: C. Mitochondrion
Rationale: Mitochondria produce most of the cell's usable energy in the
form of ATP through cellular respiration.
2. What is the basic unit of heredity?
,A. Cell
B. Gene
C. Tissue
D. Chromosome
Answer: B. Gene
Rationale: A gene is a segment of DNA that contains information
influencing a particular inherited characteristic.
3. Which gas makes up the largest percentage of Earth's atmosphere?
A. Oxygen
B. Carbon dioxide
C. Nitrogen
D. Hydrogen
Answer: C. Nitrogen
Rationale: Nitrogen makes up approximately 78% of Earth's atmosphere,
while oxygen accounts for about 21%.
4. What force pulls objects toward Earth's surface?
A. Friction
B. Gravity
,C. Magnetism
D. Inertia
Answer: B. Gravity
Rationale: Gravity is the attractive force between masses and causes
objects near Earth to accelerate toward its surface.
5. Water boils at sea level at approximately what temperature?
A. 32°F
B. 100°F
C. 180°F
D. 212°F
Answer: D. 212°F
Rationale: At standard atmospheric pressure, water boils at 212°F, or
100°C.
6. Which part of a plant absorbs most water and minerals from the soil?
A. Flower
B. Leaf
C. Root
D. Stem
Answer: C. Root
, Rationale: Roots absorb water and dissolved minerals from the soil and
anchor the plant.
7. What is the process by which plants convert light energy into chemical
energy?
A. Respiration
B. Photosynthesis
C. Fermentation
D. Digestion
Answer: B. Photosynthesis
Rationale: Photosynthesis uses sunlight, carbon dioxide, and water to
produce glucose and oxygen.
8. Which substance has a pH of approximately 7?
A. Strong acid
B. Weak acid
C. Neutral substance
D. Strong base
Answer: C. Neutral substance
Rationale: A pH of 7 is considered neutral at approximately room
temperature; pure water is a common example.
