ATI TEAS COMPREHENSIVE EXAM GUIDE FOR
2026/27 PREP Q&A ETSY APPROVED
1. Which organ system is primarily responsible for regulating blood
glucose levels through the secretion of insulin and glucagon?
A. Nervous system
B. Endocrine system
C. Digestive system
, D. Circulatory system
Correct Answer: B
Explanation: The endocrine system regulates blood glucose via the
pancreas, which secretes insulin (lowers glucose) and glucagon
(raises glucose). The nervous system transmits signals, the
digestive system breaks down food, and the circulatory system
transports blood but does not secrete these hormones.
2. A nurse is calculating the dosage for a patient who needs 0.5 mg
of a medication. The available tablets contain 250 mcg each. How
many tablets should be administered?
A. 1 tablet
B. 2 tablets
C. 2.5 tablets
D. 3 tablets
Correct Answer: B
Explanation: Convert 0.5 mg to mcg: 0.5 mg × 1000 = 500 mcg.
Then divide by tablet strength: 500 mcg ÷ 250 mcg/tablet = 2
tablets.
3. Which of the following best describes the primary function of
ribosomes in a cell?
A. Packaging and shipping proteins
B. Synthesizing proteins from mRNA
C. Breaking down waste materials
D. Storing genetic information
Correct Answer: B
Explanation: Ribosomes are the sites of protein synthesis,
translating mRNA into polypeptide chains. The Golgi apparatus
, packages proteins, lysosomes break down waste, and the nucleus
stores genetic information.
4. In a study examining the relationship between exercise frequency
and blood pressure, what is the independent variable?
A. Blood pressure
B. Exercise frequency
C. Age of participants
D. Type of exercise
Correct Answer: B
Explanation: The independent variable is what the researcher
manipulates (exercise frequency). Blood pressure is the dependent
variable (outcome), while age and exercise type are potential
confounding variables.
5. Which blood type is considered the universal donor for red blood
cell transfusions?
A. Type A
B. Type B
C. Type AB
D. Type O negative
Correct Answer: D
Explanation: Type O negative blood lacks A, B, and Rh antigens,
making it compatible with all blood types. Type AB is the universal
recipient, not donor.
6. What is the correct order of stages in mitosis?
A. Prophase, Metaphase, Anaphase, Telophase
, B. Metaphase, Prophase, Anaphase, Telophase
C. Prophase, Anaphase, Metaphase, Telophase
D. Telophase, Prophase, Metaphase, Anaphase
Correct Answer: A
Explanation: Mitosis follows the sequence PMAT: Prophase
(chromosomes condense), Metaphase (align at equator),
Anaphase (sister chromatids separate), Telophase (nuclei reform).
7. A patient reads a passage stating that "the quick brown fox jumps
over the lazy dog." Which reading skill is being assessed when the
patient identifies the main idea that the sentence describes a fox's
action?
A. Making inferences
B. Identifying main ideas
C. Recognizing text structure
D. Evaluating author's bias
Correct Answer: B
Explanation: Identifying the main idea involves determining the
central point of the text. Inference requires reading between lines,
text structure analyzes organization, and bias evaluation assesses
author perspective.
8. Which chemical bond involves the sharing of electron pairs
between atoms?
A. Ionic bond
B. Covalent bond
C. Hydrogen bond
D. Metallic bond
Correct Answer: B
2026/27 PREP Q&A ETSY APPROVED
1. Which organ system is primarily responsible for regulating blood
glucose levels through the secretion of insulin and glucagon?
A. Nervous system
B. Endocrine system
C. Digestive system
, D. Circulatory system
Correct Answer: B
Explanation: The endocrine system regulates blood glucose via the
pancreas, which secretes insulin (lowers glucose) and glucagon
(raises glucose). The nervous system transmits signals, the
digestive system breaks down food, and the circulatory system
transports blood but does not secrete these hormones.
2. A nurse is calculating the dosage for a patient who needs 0.5 mg
of a medication. The available tablets contain 250 mcg each. How
many tablets should be administered?
A. 1 tablet
B. 2 tablets
C. 2.5 tablets
D. 3 tablets
Correct Answer: B
Explanation: Convert 0.5 mg to mcg: 0.5 mg × 1000 = 500 mcg.
Then divide by tablet strength: 500 mcg ÷ 250 mcg/tablet = 2
tablets.
3. Which of the following best describes the primary function of
ribosomes in a cell?
A. Packaging and shipping proteins
B. Synthesizing proteins from mRNA
C. Breaking down waste materials
D. Storing genetic information
Correct Answer: B
Explanation: Ribosomes are the sites of protein synthesis,
translating mRNA into polypeptide chains. The Golgi apparatus
, packages proteins, lysosomes break down waste, and the nucleus
stores genetic information.
4. In a study examining the relationship between exercise frequency
and blood pressure, what is the independent variable?
A. Blood pressure
B. Exercise frequency
C. Age of participants
D. Type of exercise
Correct Answer: B
Explanation: The independent variable is what the researcher
manipulates (exercise frequency). Blood pressure is the dependent
variable (outcome), while age and exercise type are potential
confounding variables.
5. Which blood type is considered the universal donor for red blood
cell transfusions?
A. Type A
B. Type B
C. Type AB
D. Type O negative
Correct Answer: D
Explanation: Type O negative blood lacks A, B, and Rh antigens,
making it compatible with all blood types. Type AB is the universal
recipient, not donor.
6. What is the correct order of stages in mitosis?
A. Prophase, Metaphase, Anaphase, Telophase
, B. Metaphase, Prophase, Anaphase, Telophase
C. Prophase, Anaphase, Metaphase, Telophase
D. Telophase, Prophase, Metaphase, Anaphase
Correct Answer: A
Explanation: Mitosis follows the sequence PMAT: Prophase
(chromosomes condense), Metaphase (align at equator),
Anaphase (sister chromatids separate), Telophase (nuclei reform).
7. A patient reads a passage stating that "the quick brown fox jumps
over the lazy dog." Which reading skill is being assessed when the
patient identifies the main idea that the sentence describes a fox's
action?
A. Making inferences
B. Identifying main ideas
C. Recognizing text structure
D. Evaluating author's bias
Correct Answer: B
Explanation: Identifying the main idea involves determining the
central point of the text. Inference requires reading between lines,
text structure analyzes organization, and bias evaluation assesses
author perspective.
8. Which chemical bond involves the sharing of electron pairs
between atoms?
A. Ionic bond
B. Covalent bond
C. Hydrogen bond
D. Metallic bond
Correct Answer: B
