ATI TEAS 7 Science Comprehensive Proctored Exam
Ultimate Study Bank with Detailed Rationales
Course Code: TEAS 7 - Science
Course Name: Test of Essential Academic Skills (TEAS) - Entry Level Nursing
Topic: Human Anatomy & Physiology, Life & Physical Sciences, and Scientific
Reasoning
Academic Year: 2026/2027
1. How are carbohydrates utilized structurally and functionally by the human
body?
A. Structure, communication, storage, and recognition
B. Energy storage and thermal insulation exclusively
C. Chemical catalysts and structural matrices only
D. Direct replication templates and membrane channel components
CORRECT ANSWER: A
RATIONALE: Carbohydrates are highly versatile biomolecules used by the
body for multiple critical processes. They provide metabolic storage (such as
glycogen in the liver and muscles), form vital cellular structures (like the
extracellular matrix and glycoproteins), act as chemical communication signals,
and function as cell-surface surface markers for cellular recognition by the
immune system. While they are prominent energy resources, they are not limited to
insulation (which is a lipid function) or direct replication templates (which is a
nucleic acid function).
2. What type of immunity does a standard immunization or vaccine provide to
an individual?
A. Naturally acquired passive immunity
B. Artificially acquired passive immunity
C. Naturally acquired active immunity
D. Artificially acquired active immunity
CORRECT ANSWER: D
RATIONALE: A vaccine introduces a weakened, inactivated, or synthetic
fragment of a pathogen into the body artificially. This deliberate introduction
,stimulates the individual's immune system to actively produce its own antibodies
and memory cells without causing severe disease, establishing artificially
acquired active immunity. Passive immunity involves receiving pre-formed
antibodies from another source (e.g., antivenom or breast milk), and natural active
immunity occurs after surviving a live, wild-type environmental infection.
3. Which organs and/or glands are located superior to the liver within the
human body?
A. Kidneys and urinary bladder
B. Lungs, parathyroid glands, and thymus gland
C. Pelvic cavity floor and appendix
D. Abdominal aorta and lower intestines
CORRECT ANSWER: B
RATIONALE: In anatomical terminology, superior translates to being
positioned closer to the head or above a reference point. The lungs sit directly
above the diaphragm, superior to the liver. The thymus gland sits in the upper
mediastinum of the chest, and the parathyroid glands are located in the neck
embedded on the posterior thyroid, making all three structures superior to the liver.
The kidneys sit inferior/posterior to the liver, and pelvic structures are located far
inferiorly.
4. Which large structural cavity contains all of the frontal (anterior) cavities
of the human body?
A. Dorsal
B. Thoracic
C. Abdominopelvic
D. Ventral
CORRECT ANSWER: D
RATIONALE: The ventral cavity is the large anterior structural space of the
body that encompasses all frontal cavities, including the thoracic cavity (heart and
lungs) and the abdominopelvic cavity (digestive and reproductive organs). The
dorsal cavity is located posteriorly and holds the cranial and spinal cavities. The
thoracic and abdominopelvic cavities are sub-cavities located within the larger
ventral structural boundary.
, 5. Which of the following cardiovascular structures explicitly transport
oxygenated blood?
A. Pulmonary artery and superior vena cava
B. Pulmonary vein and aorta
C. Superior vena cava and inferior vena cava
D. Right atrium and pulmonary trunk
CORRECT ANSWER: B
RATIONALE: In systemic circulation, the aorta carries high-pressure
oxygenated blood from the left ventricle to the rest of the body. In pulmonary
circulation, the pulmonary veins are unique because they carry freshly oxygenated
blood from the lungs back into the left atrium of the heart. Conversely, the
pulmonary artery, superior vena cava, and inferior vena cava carry deoxygenated
blood.
6. Which of the following carbohydrate biomolecules are classified as
disaccharides?
A. Glucose and galactose
B. Cellulose and glycogen
C. Sucrose and lactose
D. Starch and fructose
CORRECT ANSWER: C
RATIONALE: Disaccharides are sugars formed when two monosaccharide
monomers are joined by a covalent glycosidic bond. Sucrose (composed of
glucose + fructose) and lactose (composed of glucose + galactose) are classic
disaccharides. Glucose and fructose are monosaccharides (monomers), while
cellulose, starch, and glycogen are large polysaccharides.
7. Which body system is directly responsible for the transport of dissolved
oxygen from the respiratory gas exchange sites to internal organs like the
spleen?
A. Immune
B. Endocrine
C. Respiratory
D. Cardiovascular
Ultimate Study Bank with Detailed Rationales
Course Code: TEAS 7 - Science
Course Name: Test of Essential Academic Skills (TEAS) - Entry Level Nursing
Topic: Human Anatomy & Physiology, Life & Physical Sciences, and Scientific
Reasoning
Academic Year: 2026/2027
1. How are carbohydrates utilized structurally and functionally by the human
body?
A. Structure, communication, storage, and recognition
B. Energy storage and thermal insulation exclusively
C. Chemical catalysts and structural matrices only
D. Direct replication templates and membrane channel components
CORRECT ANSWER: A
RATIONALE: Carbohydrates are highly versatile biomolecules used by the
body for multiple critical processes. They provide metabolic storage (such as
glycogen in the liver and muscles), form vital cellular structures (like the
extracellular matrix and glycoproteins), act as chemical communication signals,
and function as cell-surface surface markers for cellular recognition by the
immune system. While they are prominent energy resources, they are not limited to
insulation (which is a lipid function) or direct replication templates (which is a
nucleic acid function).
2. What type of immunity does a standard immunization or vaccine provide to
an individual?
A. Naturally acquired passive immunity
B. Artificially acquired passive immunity
C. Naturally acquired active immunity
D. Artificially acquired active immunity
CORRECT ANSWER: D
RATIONALE: A vaccine introduces a weakened, inactivated, or synthetic
fragment of a pathogen into the body artificially. This deliberate introduction
,stimulates the individual's immune system to actively produce its own antibodies
and memory cells without causing severe disease, establishing artificially
acquired active immunity. Passive immunity involves receiving pre-formed
antibodies from another source (e.g., antivenom or breast milk), and natural active
immunity occurs after surviving a live, wild-type environmental infection.
3. Which organs and/or glands are located superior to the liver within the
human body?
A. Kidneys and urinary bladder
B. Lungs, parathyroid glands, and thymus gland
C. Pelvic cavity floor and appendix
D. Abdominal aorta and lower intestines
CORRECT ANSWER: B
RATIONALE: In anatomical terminology, superior translates to being
positioned closer to the head or above a reference point. The lungs sit directly
above the diaphragm, superior to the liver. The thymus gland sits in the upper
mediastinum of the chest, and the parathyroid glands are located in the neck
embedded on the posterior thyroid, making all three structures superior to the liver.
The kidneys sit inferior/posterior to the liver, and pelvic structures are located far
inferiorly.
4. Which large structural cavity contains all of the frontal (anterior) cavities
of the human body?
A. Dorsal
B. Thoracic
C. Abdominopelvic
D. Ventral
CORRECT ANSWER: D
RATIONALE: The ventral cavity is the large anterior structural space of the
body that encompasses all frontal cavities, including the thoracic cavity (heart and
lungs) and the abdominopelvic cavity (digestive and reproductive organs). The
dorsal cavity is located posteriorly and holds the cranial and spinal cavities. The
thoracic and abdominopelvic cavities are sub-cavities located within the larger
ventral structural boundary.
, 5. Which of the following cardiovascular structures explicitly transport
oxygenated blood?
A. Pulmonary artery and superior vena cava
B. Pulmonary vein and aorta
C. Superior vena cava and inferior vena cava
D. Right atrium and pulmonary trunk
CORRECT ANSWER: B
RATIONALE: In systemic circulation, the aorta carries high-pressure
oxygenated blood from the left ventricle to the rest of the body. In pulmonary
circulation, the pulmonary veins are unique because they carry freshly oxygenated
blood from the lungs back into the left atrium of the heart. Conversely, the
pulmonary artery, superior vena cava, and inferior vena cava carry deoxygenated
blood.
6. Which of the following carbohydrate biomolecules are classified as
disaccharides?
A. Glucose and galactose
B. Cellulose and glycogen
C. Sucrose and lactose
D. Starch and fructose
CORRECT ANSWER: C
RATIONALE: Disaccharides are sugars formed when two monosaccharide
monomers are joined by a covalent glycosidic bond. Sucrose (composed of
glucose + fructose) and lactose (composed of glucose + galactose) are classic
disaccharides. Glucose and fructose are monosaccharides (monomers), while
cellulose, starch, and glycogen are large polysaccharides.
7. Which body system is directly responsible for the transport of dissolved
oxygen from the respiratory gas exchange sites to internal organs like the
spleen?
A. Immune
B. Endocrine
C. Respiratory
D. Cardiovascular
