HESI A2 FINAL EXAM
COMPREHENSIVE PREP QUESTIONS &
ANSWERS (VERIFIED ANSWERS) WITH
EXPERT EXPLANATIONS | 2026 – 2027
UPDATE (PDF)
1. Which of the following anatomical terms describes a position towards the front of the
body?
A. Posterior
B. Anterior
C. Lateral
D. Medial
Answer: B
Conceptual Explanation: Anterior refers to the front of the body, while posterior refers to
the back. Medial is toward the midline, and lateral is away from it.
2. In the process of osmosis, water moves across a semi-permeable membrane from an area
of:
A. High solute concentration to low solute concentration
B. Low water concentration to high water concentration
,C. High pressure to low pressure
D. Low solute concentration to high solute concentration
Answer: D
Conceptual Explanation: Osmosis is the diffusion of water from a region of low solute
concentration (high water concentration) to a region of high solute concentration (low
water concentration).
3. Which organelle is responsible for the synthesis of lipids and the detoxification of drugs?
A. Smooth Endoplasmic Reticulum
B. Lysosome
C. Golgi Apparatus
D. Rough Endoplasmic Reticulum
Answer: A
Conceptual Explanation: The Smooth ER is involved in lipid synthesis and detoxification,
whereas the Rough ER is primarily involved in protein synthesis.
4. What is the primary function of the mitochondria in a eukaryotic cell?
A. Photosynthesis
B. Protein packaging
C. Production of ATP
, D. Genetic storage
Answer: C
Conceptual Explanation: Mitochondria are the powerhouses of the cell, generating ATP
through aerobic respiration.
5. In human genetics, if a person has two different alleles for a specific gene, they are said to
be:
A. Heterozygous
B. Homozygous
C. Hemizygous
D. Phenotypic
Answer: A
Conceptual Explanation: Heterozygous means having two different alleles (e.g., Aa), while
homozygous means having two identical alleles (e.g., AA or aa).
6. Which layer of the skin contains no blood vessels and is composed of stratified squamous
epithelium?
A. Epidermis
B. Hypodermis
C. Dermis
D. Subcutaneous layer
COMPREHENSIVE PREP QUESTIONS &
ANSWERS (VERIFIED ANSWERS) WITH
EXPERT EXPLANATIONS | 2026 – 2027
UPDATE (PDF)
1. Which of the following anatomical terms describes a position towards the front of the
body?
A. Posterior
B. Anterior
C. Lateral
D. Medial
Answer: B
Conceptual Explanation: Anterior refers to the front of the body, while posterior refers to
the back. Medial is toward the midline, and lateral is away from it.
2. In the process of osmosis, water moves across a semi-permeable membrane from an area
of:
A. High solute concentration to low solute concentration
B. Low water concentration to high water concentration
,C. High pressure to low pressure
D. Low solute concentration to high solute concentration
Answer: D
Conceptual Explanation: Osmosis is the diffusion of water from a region of low solute
concentration (high water concentration) to a region of high solute concentration (low
water concentration).
3. Which organelle is responsible for the synthesis of lipids and the detoxification of drugs?
A. Smooth Endoplasmic Reticulum
B. Lysosome
C. Golgi Apparatus
D. Rough Endoplasmic Reticulum
Answer: A
Conceptual Explanation: The Smooth ER is involved in lipid synthesis and detoxification,
whereas the Rough ER is primarily involved in protein synthesis.
4. What is the primary function of the mitochondria in a eukaryotic cell?
A. Photosynthesis
B. Protein packaging
C. Production of ATP
, D. Genetic storage
Answer: C
Conceptual Explanation: Mitochondria are the powerhouses of the cell, generating ATP
through aerobic respiration.
5. In human genetics, if a person has two different alleles for a specific gene, they are said to
be:
A. Heterozygous
B. Homozygous
C. Hemizygous
D. Phenotypic
Answer: A
Conceptual Explanation: Heterozygous means having two different alleles (e.g., Aa), while
homozygous means having two identical alleles (e.g., AA or aa).
6. Which layer of the skin contains no blood vessels and is composed of stratified squamous
epithelium?
A. Epidermis
B. Hypodermis
C. Dermis
D. Subcutaneous layer
