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This comprehensive ATI TEAS 7 study package and
verified practice questions with in-depth step-by-step
rationales mapping directly to the latest 2026 exam
blueprint. Every core module is thoroughly covered,
providing premium practice resources for the Reading,
Mathematics, Science, and English and Language Usage
sections. It serves as an essential, high-density
academic resource designed to identify knowledge gaps,
boost testing confidence, and ensure first-time success
on your nursing school entrance examination.
,SECTION: SCIENCE
Question 1
Which of the following cellular organelles is responsible for the synthesis
of ATP through cellular respiration?
A) Lysosome
B) Mitochondrion
C) Golgi apparatus
D) Ribosome
Verified Answer: B) Mitochondrion
Explanation: The mitochondrion is known as the powerhouse of
the cell because it generates most of the cell's supply of
adenosine triphosphate (ATP), used as a source of chemical
energy. Lysosomes handle waste disposal, the Golgi apparatus
modifies and packages proteins, and ribosomes are
responsible for protein synthesis.
Question 2
Which of the following structures prevents food from entering the
trachea during swallowing?
A) Pharynx
B) Larynx
C) Epiglottis
D) Esophagus
, Verified Answer: C) Epiglottis
Explanation: The epiglottis is a flap of cartilage located behind
the tongue, at the top of the larynx. During swallowing, it folds
backward over the glottis to cover the entrance of the larynx,
preventing food and liquid from entering the trachea and lungs.
Question 3
What type of bond is formed when electrons are shared equally between
two atoms?
A) Nonpolar covalent bond
B) Polar covalent bond
C) Ionic bond
D) Hydrogen bond
Verified Answer: A) Nonpolar covalent bond
Explanation: A nonpolar covalent bond occurs when two atoms
share electrons equally because they have similar
electronegativities. Polar covalent bonds involve unequal
sharing, ionic bonds involve the complete transfer of electrons,
and hydrogen bonds are weak attractions between partial
charges.
Question 4
Which layer of the skin contains blood vessels, nerve endings, sweat
glands, and hair follicles?
A) Epidermis
, B) Dermis
C) Hypodermis
D) Stratum corneum
Verified Answer: B) Dermis
Explanation: The dermis is the thick layer of skin beneath the
epidermis that contains connective tissue, blood vessels, oil
and sweat glands, nerves, and hair follicles. The epidermis is
avascular, and the hypodermis consists mostly of adipose
tissue.
Question 5
In a cross between two heterozygous tall pea plants (Tt x Tt), what is the
expected genotypic ratio of the offspring?
A) 3:1
B) 1:2:1
C) 9:3:3:1
D) 1:1
Verified Answer: B) 1:2:1
Explanation: A Monohybrid cross of Tt x Tt results in 1
homozygous dominant (TT), 2 heterozygous (Tt), and 1
homozygous recessive (tt) offspring. This gives a genotypic
ratio of 1:2:1. The phenotypic ratio of tall to short is 3:1.
Question 6