ATI TEAS 7 Science Practice
Questions And Correct
Answers (Verified Answers)
Plus Rationales 2026 Q&A |
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1. What is the basic unit of life?
A. Atom
B. Tissue
C. Cell
D. Organ
Rationale: The cell is the smallest structural and functional
unit of living organisms.
2. Which organelle is responsible for producing energy
(ATP)?
A. Nucleus
B. Ribosome
C. Mitochondria
D. Golgi apparatus
Rationale: Mitochondria generate ATP through cellular
respiration.
,3. What is the function of ribosomes?
A. Lipid storage
B. DNA replication
C. Protein synthesis
D. Waste removal
Rationale: Ribosomes assemble amino acids into proteins.
4. Which blood cells help fight infection?
A. Red blood cells
B. Platelets
C. White blood cells
D. Plasma cells only
Rationale: White blood cells are part of the immune system.
5. What is the primary function of red blood cells?
A. Fight pathogens
B. Clot blood
C. Transport oxygen
D. Produce antibodies
Rationale: Red blood cells carry oxygen via hemoglobin.
6. Which system controls hormones in the body?
,A. Nervous system
B. Respiratory system
C. Endocrine system
D. Digestive system
Rationale: The endocrine system secretes hormones
regulating body functions.
7. Where does gas exchange occur in the lungs?
A. Trachea
B. Bronchi
C. Alveoli
D. Diaphragm
Rationale: Alveoli are tiny air sacs where oxygen and carbon
dioxide exchange occurs.
8. What is the function of the large intestine?
A. Digest proteins
B. Absorb nutrients
C. Absorb water
D. Produce enzymes
Rationale: The large intestine absorbs water and forms feces.
9. Which biomolecule stores genetic information?
A. Lipids
B. Carbohydrates
, C. Proteins
D. Nucleic acids
Rationale: DNA and RNA are nucleic acids that store genetic
information.
10. Which organ filters blood in the human body?
A. Liver
B. Heart
C. Kidneys
D. Pancreas
Rationale: Kidneys remove waste and regulate fluid balance.
11. What is homeostasis?
A. Cell division
B. Energy production
C. Maintaining internal balance
D. Blood circulation
Rationale: Homeostasis keeps internal conditions stable.
12. Which part of the brain controls balance?
A. Cerebrum
B. Medulla
C. Cerebellum
D. Hypothalamus
Questions And Correct
Answers (Verified Answers)
Plus Rationales 2026 Q&A |
Instant Download Pdf
1. What is the basic unit of life?
A. Atom
B. Tissue
C. Cell
D. Organ
Rationale: The cell is the smallest structural and functional
unit of living organisms.
2. Which organelle is responsible for producing energy
(ATP)?
A. Nucleus
B. Ribosome
C. Mitochondria
D. Golgi apparatus
Rationale: Mitochondria generate ATP through cellular
respiration.
,3. What is the function of ribosomes?
A. Lipid storage
B. DNA replication
C. Protein synthesis
D. Waste removal
Rationale: Ribosomes assemble amino acids into proteins.
4. Which blood cells help fight infection?
A. Red blood cells
B. Platelets
C. White blood cells
D. Plasma cells only
Rationale: White blood cells are part of the immune system.
5. What is the primary function of red blood cells?
A. Fight pathogens
B. Clot blood
C. Transport oxygen
D. Produce antibodies
Rationale: Red blood cells carry oxygen via hemoglobin.
6. Which system controls hormones in the body?
,A. Nervous system
B. Respiratory system
C. Endocrine system
D. Digestive system
Rationale: The endocrine system secretes hormones
regulating body functions.
7. Where does gas exchange occur in the lungs?
A. Trachea
B. Bronchi
C. Alveoli
D. Diaphragm
Rationale: Alveoli are tiny air sacs where oxygen and carbon
dioxide exchange occurs.
8. What is the function of the large intestine?
A. Digest proteins
B. Absorb nutrients
C. Absorb water
D. Produce enzymes
Rationale: The large intestine absorbs water and forms feces.
9. Which biomolecule stores genetic information?
A. Lipids
B. Carbohydrates
, C. Proteins
D. Nucleic acids
Rationale: DNA and RNA are nucleic acids that store genetic
information.
10. Which organ filters blood in the human body?
A. Liver
B. Heart
C. Kidneys
D. Pancreas
Rationale: Kidneys remove waste and regulate fluid balance.
11. What is homeostasis?
A. Cell division
B. Energy production
C. Maintaining internal balance
D. Blood circulation
Rationale: Homeostasis keeps internal conditions stable.
12. Which part of the brain controls balance?
A. Cerebrum
B. Medulla
C. Cerebellum
D. Hypothalamus
