HESI Biology Fundamentals Exam Newest 2026 Questions and
Correct Detailed Answers and Rationales Already Graded A+
CORE CONCEPTS
Cell = basic unit of life
DNA = genetic blueprint
Homeostasis = internal balance
Mitosis = growth/repair
Meiosis = reproduction
Diffusion = passive movement (high → low)
SECTION A: CELL STRUCTURE
1.
What is the basic unit of life?
A. Tissue
B. Organ
C. Cell
D. System
Answer: C (Cell)
Rationale:
The cell is the smallest living structural and functional unit.
2.
Which organelle produces energy for the cell?
, A. Nucleus
B. Ribosome
C. Mitochondria
D. Golgi apparatus
Answer: C
Rationale:
Mitochondria produce ATP (energy).
3.
The cell membrane primarily:
A. Produces proteins
B. Controls entry and exit of substances
C. Stores DNA
D. Makes energy
Answer: B
Rationale:
It is selectively permeable and regulates transport.
4.
Which structure contains genetic material?
A. Ribosome
B. Nucleus
C. Lysosome
D. Cytoplasm
Answer: B
Rationale:
The nucleus stores DNA.
Correct Detailed Answers and Rationales Already Graded A+
CORE CONCEPTS
Cell = basic unit of life
DNA = genetic blueprint
Homeostasis = internal balance
Mitosis = growth/repair
Meiosis = reproduction
Diffusion = passive movement (high → low)
SECTION A: CELL STRUCTURE
1.
What is the basic unit of life?
A. Tissue
B. Organ
C. Cell
D. System
Answer: C (Cell)
Rationale:
The cell is the smallest living structural and functional unit.
2.
Which organelle produces energy for the cell?
, A. Nucleus
B. Ribosome
C. Mitochondria
D. Golgi apparatus
Answer: C
Rationale:
Mitochondria produce ATP (energy).
3.
The cell membrane primarily:
A. Produces proteins
B. Controls entry and exit of substances
C. Stores DNA
D. Makes energy
Answer: B
Rationale:
It is selectively permeable and regulates transport.
4.
Which structure contains genetic material?
A. Ribosome
B. Nucleus
C. Lysosome
D. Cytoplasm
Answer: B
Rationale:
The nucleus stores DNA.
