TEAS TEST ATI SCIENCE QUESTIONS AND CORRECT
ANSWERS (VRIFIED ANSWERS) Q&A 2026/2027
|INSTANT DOWNLOAD PDf
1. Which organelle is known as the control center of the cell?
A. Ribosome
B. Nucleus
C. Mitochondria
D. Golgi apparatus
Correct Answer: B. Nucleus
Rationale: The nucleus contains DNA and regulates cellular
activities.
2. What is the basic unit of life?
A. Tissue
B. Organ
C. Cell
D. System
Correct Answer: C. Cell
Rationale: Cells are the smallest structures capable of
performing life functions.
3. Which macromolecule provides the primary source of
energy for the body?
,A. Proteins
B. Lipids
C. Carbohydrates
D. Nucleic acids
Correct Answer: C. Carbohydrates
Rationale: Carbohydrates are broken down into glucose, the
body's main energy source.
4. Which structure controls movement of substances into and
out of the cell?
A. Cell wall
B. Cell membrane
C. Cytoplasm
D. Nucleus
Correct Answer: B. Cell membrane
Rationale: The cell membrane regulates what enters and leaves
the cell.
5. Which process produces two identical daughter cells?
A. Meiosis
B. Diffusion
C. Mitosis
D. Osmosis
,Correct Answer: C. Mitosis
Rationale: Mitosis creates genetically identical cells for growth
and repair.
6. Which organelle produces ATP energy?
A. Lysosome
B. Mitochondria
C. Nucleus
D. Ribosome
Correct Answer: B. Mitochondria
Rationale: Mitochondria are responsible for cellular respiration
and ATP production.
7. DNA is primarily located in which cell structure?
A. Cytoplasm
B. Ribosome
C. Nucleus
D. Cell membrane
Correct Answer: C. Nucleus
Rationale: Nuclear DNA contains genetic instructions for the
cell.
8. What type of bond involves sharing electrons between
atoms?
, A. Ionic bond
B. Hydrogen bond
C. Covalent bond
D. Metallic bond
Correct Answer: C. Covalent bond
Rationale: Covalent bonds form when atoms share electrons.
9. A substance with a pH of 3 is considered:
A. Neutral
B. Acidic
C. Basic
D. Salty
Correct Answer: B. Acidic
Rationale: A pH below 7 indicates an acidic substance.
10. Which body system transports oxygen throughout the
body?
A. Digestive system
B. Respiratory system
C. Circulatory system
D. Nervous system
Correct Answer: C. Circulatory system
Rationale: Blood carries oxygen from the lungs to tissues.
ANSWERS (VRIFIED ANSWERS) Q&A 2026/2027
|INSTANT DOWNLOAD PDf
1. Which organelle is known as the control center of the cell?
A. Ribosome
B. Nucleus
C. Mitochondria
D. Golgi apparatus
Correct Answer: B. Nucleus
Rationale: The nucleus contains DNA and regulates cellular
activities.
2. What is the basic unit of life?
A. Tissue
B. Organ
C. Cell
D. System
Correct Answer: C. Cell
Rationale: Cells are the smallest structures capable of
performing life functions.
3. Which macromolecule provides the primary source of
energy for the body?
,A. Proteins
B. Lipids
C. Carbohydrates
D. Nucleic acids
Correct Answer: C. Carbohydrates
Rationale: Carbohydrates are broken down into glucose, the
body's main energy source.
4. Which structure controls movement of substances into and
out of the cell?
A. Cell wall
B. Cell membrane
C. Cytoplasm
D. Nucleus
Correct Answer: B. Cell membrane
Rationale: The cell membrane regulates what enters and leaves
the cell.
5. Which process produces two identical daughter cells?
A. Meiosis
B. Diffusion
C. Mitosis
D. Osmosis
,Correct Answer: C. Mitosis
Rationale: Mitosis creates genetically identical cells for growth
and repair.
6. Which organelle produces ATP energy?
A. Lysosome
B. Mitochondria
C. Nucleus
D. Ribosome
Correct Answer: B. Mitochondria
Rationale: Mitochondria are responsible for cellular respiration
and ATP production.
7. DNA is primarily located in which cell structure?
A. Cytoplasm
B. Ribosome
C. Nucleus
D. Cell membrane
Correct Answer: C. Nucleus
Rationale: Nuclear DNA contains genetic instructions for the
cell.
8. What type of bond involves sharing electrons between
atoms?
, A. Ionic bond
B. Hydrogen bond
C. Covalent bond
D. Metallic bond
Correct Answer: C. Covalent bond
Rationale: Covalent bonds form when atoms share electrons.
9. A substance with a pH of 3 is considered:
A. Neutral
B. Acidic
C. Basic
D. Salty
Correct Answer: B. Acidic
Rationale: A pH below 7 indicates an acidic substance.
10. Which body system transports oxygen throughout the
body?
A. Digestive system
B. Respiratory system
C. Circulatory system
D. Nervous system
Correct Answer: C. Circulatory system
Rationale: Blood carries oxygen from the lungs to tissues.
