COMPREHENSIVE ATI TEAS 2026-2027,
ATI TEAS 7 Science, Practice Questions,
ATI sheet Science. Latest Updated Exam
Study Guide 2026/2027
Which of the following term is used to describe the amount of air in a normal inhalation or
exhalation? - ANSTidal volume
______ is the movement of fluid to a tissue. - ANSPerfusion
_______ is a synonym for breathing in any capacity. - ANSVentilation
______ is the amount of air that remains in the alveoli after exhalation. - ANSResidual
Volume
Which of the following blood vessels Carrie's deoxygenated blood from the heart to the
lungs? - ANSPulmonary artery
The ______ brings oxygenated blood back to the left atrium from the lungs. - ANSPulmonary
vein
_____ is responsible for bringing oxygenated blood from the left ventricle to the rest of the
body. - ANSAorta
________ is responsible for bringing back deoxygenated blood to the right atrium. -
ANSVena cava
In which of the following actions is the autonomic nervous system engaged? - ANSDigestion
What is holding your breath, lifting weights, and walking an example of? - ANSA voluntary
action controlled by the somatic nervous system.
During inhalation, where would you expect to find a higher concentration of oxygen? -
ANSI'm the alveolar air space
During inhalation, where would you expect to find a lower concentration of oxygen? - ANSIn
the capillaries
Where does blood flow next after being oxygenated in the lungs? - ANSPulmonary vein
_______ carries blood to the lungs. - ANSPulmonary artery
_______ carries blood back to the heart from the lower part of the body. - ANSInferior vena
cava
______ carries oxygenated blood to the body after it returns to the heart. - ANSAorta
Which of the following is the name of the structure that releases an enzyme that breaks down
starch in the mouth? - ANSSalivary gland
_______ secretes bile, and emulsifier that breaks apart, fat and lipid globules. - ANSLiver
_______ is related to digestion but releases enzymes that are used in the small intestine. -
ANSPancreas
________ stores bile, which is used in the breakdown of fat and lipid globules. -
ANSGallbladder
Which type of tissue would you find in the heart? - ANSCardiac muscles
_________ is the same as smooth muscle, and is involved in the involuntary contraction of
hollow internal organs, such as the bladder and intestines. - ANSNon-striated muscle
_______ are involved in the involuntary contractions of hollow internal organs, such as the
bladder and intestines. - ANSSmooth muscles
_______ generally attached to bones to allow voluntary body movement. - ANSSkeletal
muscles
What is the name for the hormone responsible for male secondary sex characteristics? -
ANSTestosterone
,COMPREHENSIVE ATI TEAS 2026-2027,
ATI TEAS 7 Science, Practice Questions,
ATI sheet Science. Latest Updated Exam
Study Guide 2026/2027
Which of the following would result from a decrease in body temperature? - ANSBlood
vessels near the surface of the body would constrict.
_______ dilate when the body temperature rises to allow blood to release heat through the
skin. - ANSBlood vessels
_________ excrete sweat when the body temperature rises. When the sweat evaporates, it has
a cooling effect. - ANSSweat glands
________ when the body temperature rises to allow blood to release heat through the skin. -
ANSCheeks flush
Which of the following is where melanocytes are found? - ANSEpidermis ( upper layer of
skin)
Dermis - ANSMiddle layer of skin
Hypodermis - ANSSubbcutaneous layer
______ excrete waste and do not contain melanocyte cells. - ANSSebaceous glands
Which of the following is an immediate result of the adrenal gland releasing epinephrine into
the blood? - ANSIncrease heart rate
Which of the following structures releases insulin and glucagon? - ANSPancreas
______ secretes epinephrine and norepinephrine. - ANSAdrenal medulla
_______ secretes glucocorticoids and mineralocortoids. - ANSAdrenal cortex
_______ secretes releasing and inhibiting hormones. - ANSHypothalamus
_________ secretes various tropic hormones. - ANSAnterior pituitary
_________ secretes antidiuretic hormone and oxytocin. - ANSPosterior pituitary
Which of the following substances is the fluid that contains urea, water, and salts that is
released through the urethra. - ANSUrine
________ is a material filtered out of the blood through the nephrons of the kidney. -
ANSFiltrate
Which of the following is a nonspecific barrier of the immune system? - ANSMucus
Which of the following diseases is caused by a virus that infects T cells? - ANSAcquired
Immune Deficiency Syndrome (AIDS)
______ is an illness that affects the bronchi of the lungs. - ANSAsthma
______ a condition that causes the immune system to mistakenly attack the body. -
ANSAutoimmune disease
Which of the following functions is an example of how the skeletal and neuromuscular
system work together? - ANSBody movement
Rearrange the terms below in order of the anatomical subregions. (1) - ANSBrachium
Rearrange the terms below in order of the anatomical subregions. (2) - ANSAntecubital
Rearrange the terms below in order of the anatomical subregions. (3) - ANSAntebrachium
Rearrange the terms below in order of the anatomical subregions. (4) - ANSCarpal
Rearrange the terms below in order of the anatomical subregions. (5) - ANSPhalanges
Which of the following is classified as a carbohydrate?
A. DNA
B. Endorphin
C. Glycogen
D. Amylase - ANSC. Glycogen
,COMPREHENSIVE ATI TEAS 2026-2027,
ATI TEAS 7 Science, Practice Questions,
ATI sheet Science. Latest Updated Exam
Study Guide 2026/2027
DNA is classified as a _______? - ANSNucleic acid
________ are neurotransmitters secreted by neurons. - ANSEndorphins
_______ is a protein enzyme which breaks down carbohydrates. - ANSAmylase
________ is a storage form of carbohydrates in animals. - ANSGlycogen
________ is found in the liver and in skeletal muscles of humans and is used for energy
production. - ANSGlycogen
Which of the following best describes the relationship between a chromosome and a gene? -
ANSEach chromosome contains a specific number of genes.
________ is where specific sequences of DNA called "genes" are found. - ANSIndividual
chromosomes
_______ is the foundational material found in genes, therefore, in chromosomes. - ANSDNA
A purple flowered pea plant and a white flowered pea plant were crossed. The allele for
purple flowers is dominant, and the allele for white flowers is recessive. Of 1000 offspring,
498 were purple flowered, pea plants, and 502 were white flowered peas, plants. Based on
these results, which of the following can be concluded about the parent plants? - ANSThe
purple flowered pea plant is heterozygous.
In Mendelian genetics, _________ means two of the same allele. - ANSHomozygous
In Mendelian genetics, _______ means different alleles. - ANSHeterozygous
Which of the following cell structures contain cristae? - ANSMitochondria
_____ is a molecule composed of two chains of nucleotides that coil around each other to
form a double helix.. - ANSDNA
_________ is a series of membranes used in processing cell products such as lipids. -
ANSSmooth endoplasmic reticulum
_______ have a single membrane that surrounds the digestive enzymes, which detoxify
harmful cell waste products. - ANSPeroxisomes
Which of the following describes the function of the plasma membrane? - ANSIt maintains
the cell's internal environment.
________ generated energy for the cell. - ANSMitochondria
________ helps in the synthesis of proteins. - ANSRibosome
_______ generate chemical energy in the form of ATP molecules. - ANSMitochondria
Thymine is replaced by which of the following nitrogen bases in RNA? - ANSUracil
______ replaces thymine when DNA is copied to mRNA. - ANSUracil
_______ is a nitrogenous base that is found in DNA and RNA. - ANSCytosine
______ is a nitrogenous base that is found in DNA and RNA. - ANSGuanine
______ is a structural component of RNA, not a nitrogen base. - ANSRibose
Which of the following are possible allele combinations for a child's blood type, if both
parents have type A blood?
A. IA, IA
B. IA, i
C. IB, IB
D. IA, IB
E. i, i - ANSA. IA, IA
B. IA, i
, COMPREHENSIVE ATI TEAS 2026-2027,
ATI TEAS 7 Science, Practice Questions,
ATI sheet Science. Latest Updated Exam
Study Guide 2026/2027
E. i, i
Which of the following types of microscopes uses something other than light to form a
specimen image? - ANSElectron
Bright- field, Dark-field, and Fluorescence are all examples of which type of microscope? -
ANSLight microscope
Which of the following microscopic organisms are decomposes and the cause of many skin
diseases? - ANSFungi
_______ are decomposes and are known for causing a skin diseases such as ringworm and
athletes foot. - ANSFungi
______ are not decomposers but producers because they make their own food through
photosynthesis. - ANSAlgae
_______ are not decomposers, though some vital diseases can affect the skin. - ANSViruses
Which of the following statements describes the subatomic particles that make up an atom? -
ANSProtons and neutrons have about the same mass and can be found in the nucleus.
Protons and______are found in the nucleus of an atom. - ANSNeutrons
Protons and electrons are the same size.
True or false - ANSFalse
Which of the following is an example of an ionic compound?
A. NaCl
B. CO
C. C6H12O6
D. H20 - ANSA. NaCl
______ form when an electron from a metal is donated to a nonmetal atom. This donation
causes ions to be formed, which are attracted to one another . And dork ionic bonds. Sodium
is a METAL and chloride is a NONMETAL - ANSIonic compounds
Covalent bond - ANSA chemical bond formed when two atoms share electrons.
Ionic bond - ANSA chemical bond resulting from the attraction between oppositely charged
ions.
A _______ is a unit that corresponds to 6.022 x 1023 particles of anything; using it preserved
the correct relationship between all substances in the equation. - ANSMole
_________ is calculated by dividing the miles of solute by the total liters of solution. -
ANSMolarity
Molarity (M) = - ANSMoles of solute/ liters of solution
N2 + 3H2 --> 2NH3
Which of the following will increase the rate of the exoteric reaction shown above?
A. Decreasing the pressure
B. Increasing the temperature
C. Adding a catalyst
D. Adding ammonia (NH3) - ANSAdding a catalyst
_______ lower the activation energy and increase the reaction rate. - ANSCatalysts
______ reactions slow down when the temperature is raised. - ANSExothermic
________________ bases are hydrogen ion acceptors. - ANSBronsted- Lowry
ATI TEAS 7 Science, Practice Questions,
ATI sheet Science. Latest Updated Exam
Study Guide 2026/2027
Which of the following term is used to describe the amount of air in a normal inhalation or
exhalation? - ANSTidal volume
______ is the movement of fluid to a tissue. - ANSPerfusion
_______ is a synonym for breathing in any capacity. - ANSVentilation
______ is the amount of air that remains in the alveoli after exhalation. - ANSResidual
Volume
Which of the following blood vessels Carrie's deoxygenated blood from the heart to the
lungs? - ANSPulmonary artery
The ______ brings oxygenated blood back to the left atrium from the lungs. - ANSPulmonary
vein
_____ is responsible for bringing oxygenated blood from the left ventricle to the rest of the
body. - ANSAorta
________ is responsible for bringing back deoxygenated blood to the right atrium. -
ANSVena cava
In which of the following actions is the autonomic nervous system engaged? - ANSDigestion
What is holding your breath, lifting weights, and walking an example of? - ANSA voluntary
action controlled by the somatic nervous system.
During inhalation, where would you expect to find a higher concentration of oxygen? -
ANSI'm the alveolar air space
During inhalation, where would you expect to find a lower concentration of oxygen? - ANSIn
the capillaries
Where does blood flow next after being oxygenated in the lungs? - ANSPulmonary vein
_______ carries blood to the lungs. - ANSPulmonary artery
_______ carries blood back to the heart from the lower part of the body. - ANSInferior vena
cava
______ carries oxygenated blood to the body after it returns to the heart. - ANSAorta
Which of the following is the name of the structure that releases an enzyme that breaks down
starch in the mouth? - ANSSalivary gland
_______ secretes bile, and emulsifier that breaks apart, fat and lipid globules. - ANSLiver
_______ is related to digestion but releases enzymes that are used in the small intestine. -
ANSPancreas
________ stores bile, which is used in the breakdown of fat and lipid globules. -
ANSGallbladder
Which type of tissue would you find in the heart? - ANSCardiac muscles
_________ is the same as smooth muscle, and is involved in the involuntary contraction of
hollow internal organs, such as the bladder and intestines. - ANSNon-striated muscle
_______ are involved in the involuntary contractions of hollow internal organs, such as the
bladder and intestines. - ANSSmooth muscles
_______ generally attached to bones to allow voluntary body movement. - ANSSkeletal
muscles
What is the name for the hormone responsible for male secondary sex characteristics? -
ANSTestosterone
,COMPREHENSIVE ATI TEAS 2026-2027,
ATI TEAS 7 Science, Practice Questions,
ATI sheet Science. Latest Updated Exam
Study Guide 2026/2027
Which of the following would result from a decrease in body temperature? - ANSBlood
vessels near the surface of the body would constrict.
_______ dilate when the body temperature rises to allow blood to release heat through the
skin. - ANSBlood vessels
_________ excrete sweat when the body temperature rises. When the sweat evaporates, it has
a cooling effect. - ANSSweat glands
________ when the body temperature rises to allow blood to release heat through the skin. -
ANSCheeks flush
Which of the following is where melanocytes are found? - ANSEpidermis ( upper layer of
skin)
Dermis - ANSMiddle layer of skin
Hypodermis - ANSSubbcutaneous layer
______ excrete waste and do not contain melanocyte cells. - ANSSebaceous glands
Which of the following is an immediate result of the adrenal gland releasing epinephrine into
the blood? - ANSIncrease heart rate
Which of the following structures releases insulin and glucagon? - ANSPancreas
______ secretes epinephrine and norepinephrine. - ANSAdrenal medulla
_______ secretes glucocorticoids and mineralocortoids. - ANSAdrenal cortex
_______ secretes releasing and inhibiting hormones. - ANSHypothalamus
_________ secretes various tropic hormones. - ANSAnterior pituitary
_________ secretes antidiuretic hormone and oxytocin. - ANSPosterior pituitary
Which of the following substances is the fluid that contains urea, water, and salts that is
released through the urethra. - ANSUrine
________ is a material filtered out of the blood through the nephrons of the kidney. -
ANSFiltrate
Which of the following is a nonspecific barrier of the immune system? - ANSMucus
Which of the following diseases is caused by a virus that infects T cells? - ANSAcquired
Immune Deficiency Syndrome (AIDS)
______ is an illness that affects the bronchi of the lungs. - ANSAsthma
______ a condition that causes the immune system to mistakenly attack the body. -
ANSAutoimmune disease
Which of the following functions is an example of how the skeletal and neuromuscular
system work together? - ANSBody movement
Rearrange the terms below in order of the anatomical subregions. (1) - ANSBrachium
Rearrange the terms below in order of the anatomical subregions. (2) - ANSAntecubital
Rearrange the terms below in order of the anatomical subregions. (3) - ANSAntebrachium
Rearrange the terms below in order of the anatomical subregions. (4) - ANSCarpal
Rearrange the terms below in order of the anatomical subregions. (5) - ANSPhalanges
Which of the following is classified as a carbohydrate?
A. DNA
B. Endorphin
C. Glycogen
D. Amylase - ANSC. Glycogen
,COMPREHENSIVE ATI TEAS 2026-2027,
ATI TEAS 7 Science, Practice Questions,
ATI sheet Science. Latest Updated Exam
Study Guide 2026/2027
DNA is classified as a _______? - ANSNucleic acid
________ are neurotransmitters secreted by neurons. - ANSEndorphins
_______ is a protein enzyme which breaks down carbohydrates. - ANSAmylase
________ is a storage form of carbohydrates in animals. - ANSGlycogen
________ is found in the liver and in skeletal muscles of humans and is used for energy
production. - ANSGlycogen
Which of the following best describes the relationship between a chromosome and a gene? -
ANSEach chromosome contains a specific number of genes.
________ is where specific sequences of DNA called "genes" are found. - ANSIndividual
chromosomes
_______ is the foundational material found in genes, therefore, in chromosomes. - ANSDNA
A purple flowered pea plant and a white flowered pea plant were crossed. The allele for
purple flowers is dominant, and the allele for white flowers is recessive. Of 1000 offspring,
498 were purple flowered, pea plants, and 502 were white flowered peas, plants. Based on
these results, which of the following can be concluded about the parent plants? - ANSThe
purple flowered pea plant is heterozygous.
In Mendelian genetics, _________ means two of the same allele. - ANSHomozygous
In Mendelian genetics, _______ means different alleles. - ANSHeterozygous
Which of the following cell structures contain cristae? - ANSMitochondria
_____ is a molecule composed of two chains of nucleotides that coil around each other to
form a double helix.. - ANSDNA
_________ is a series of membranes used in processing cell products such as lipids. -
ANSSmooth endoplasmic reticulum
_______ have a single membrane that surrounds the digestive enzymes, which detoxify
harmful cell waste products. - ANSPeroxisomes
Which of the following describes the function of the plasma membrane? - ANSIt maintains
the cell's internal environment.
________ generated energy for the cell. - ANSMitochondria
________ helps in the synthesis of proteins. - ANSRibosome
_______ generate chemical energy in the form of ATP molecules. - ANSMitochondria
Thymine is replaced by which of the following nitrogen bases in RNA? - ANSUracil
______ replaces thymine when DNA is copied to mRNA. - ANSUracil
_______ is a nitrogenous base that is found in DNA and RNA. - ANSCytosine
______ is a nitrogenous base that is found in DNA and RNA. - ANSGuanine
______ is a structural component of RNA, not a nitrogen base. - ANSRibose
Which of the following are possible allele combinations for a child's blood type, if both
parents have type A blood?
A. IA, IA
B. IA, i
C. IB, IB
D. IA, IB
E. i, i - ANSA. IA, IA
B. IA, i
, COMPREHENSIVE ATI TEAS 2026-2027,
ATI TEAS 7 Science, Practice Questions,
ATI sheet Science. Latest Updated Exam
Study Guide 2026/2027
E. i, i
Which of the following types of microscopes uses something other than light to form a
specimen image? - ANSElectron
Bright- field, Dark-field, and Fluorescence are all examples of which type of microscope? -
ANSLight microscope
Which of the following microscopic organisms are decomposes and the cause of many skin
diseases? - ANSFungi
_______ are decomposes and are known for causing a skin diseases such as ringworm and
athletes foot. - ANSFungi
______ are not decomposers but producers because they make their own food through
photosynthesis. - ANSAlgae
_______ are not decomposers, though some vital diseases can affect the skin. - ANSViruses
Which of the following statements describes the subatomic particles that make up an atom? -
ANSProtons and neutrons have about the same mass and can be found in the nucleus.
Protons and______are found in the nucleus of an atom. - ANSNeutrons
Protons and electrons are the same size.
True or false - ANSFalse
Which of the following is an example of an ionic compound?
A. NaCl
B. CO
C. C6H12O6
D. H20 - ANSA. NaCl
______ form when an electron from a metal is donated to a nonmetal atom. This donation
causes ions to be formed, which are attracted to one another . And dork ionic bonds. Sodium
is a METAL and chloride is a NONMETAL - ANSIonic compounds
Covalent bond - ANSA chemical bond formed when two atoms share electrons.
Ionic bond - ANSA chemical bond resulting from the attraction between oppositely charged
ions.
A _______ is a unit that corresponds to 6.022 x 1023 particles of anything; using it preserved
the correct relationship between all substances in the equation. - ANSMole
_________ is calculated by dividing the miles of solute by the total liters of solution. -
ANSMolarity
Molarity (M) = - ANSMoles of solute/ liters of solution
N2 + 3H2 --> 2NH3
Which of the following will increase the rate of the exoteric reaction shown above?
A. Decreasing the pressure
B. Increasing the temperature
C. Adding a catalyst
D. Adding ammonia (NH3) - ANSAdding a catalyst
_______ lower the activation energy and increase the reaction rate. - ANSCatalysts
______ reactions slow down when the temperature is raised. - ANSExothermic
________________ bases are hydrogen ion acceptors. - ANSBronsted- Lowry
