Assessment Technologies Institute (ATI) Test of Essential Academic Skills (TEAS 7) Science 2026 Practice Test – All Questions

Browse all practice questions for the Assessment Technologies Institute (ATI) Test of Essential Academic Skills (TEAS 7) Science 2026 Practice Test. Search by topic, open any question and review its full explanation, then test yourself in the practice quiz.

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Discover which element is represented by the symbol 'I'Which element is represented by the symbol 'I' that is a halogen?Discovering the Chemical Symbol for Boron: A Quick InsightWhat is the chemical symbol for boron?Discovering the Unique Symbol for MercuryWhat is the chemical symbol for mercury?Explore How Temperature, Concentration, and Catalysts Influence Chemical Reaction RatesWhat factors are most likely to affect the rate of a chemical reaction?Explore the Significance of Sodium and Its Role in ScienceWhich element is represented by the symbol Na?Exploring the Pleura: The Essential Membrane Covering Our LungsThe pleura is a connective tissue sheath that covers which organ?Exploring the Vital Role of the Peripheral Nervous SystemWhat is the primary function of the Peripheral Nervous System?How Are Valence Electrons Managed in an Ionic Bond?In an ionic bond, how are valence electrons managed?Organelle: the cell’s specialized structures and what they doWhat is the term for a specialized structure within a cell?The Role of Fallopian Tubes in Egg FertilizationWhere does fertilization of an egg typically occur?Understanding Combination Reactions: The Basics of Synthesis in ChemistryA combination (synthesis) reaction is defined as:Understanding Decomposition Reactions in ChemistryA decomposition (desynthesis) reaction involves:Understanding Elements: The Building Blocks of MatterAn element is defined as a substance composed entirely of one type of what?Understanding Estrogen as a Steroid HormoneEstrogen is considered which type of hormone?Understanding Homeostasis and its Role in Our BodyWhat do you call the tendency of the body to maintain a balanced internal state?Understanding How Bacteria Reproduce: The Role of Binary FissionBacterial cells primarily reproduce by which method?Understanding How Negative Feedback Stabilizes Your Body's ProcessesWhich feedback loop is most associated with stabilizing physiological processes in the body?Understanding Inversions in Genetic Mutations: A Deep DiveWhat type of mutation is indicated by the change from original sequence 123456 to mutated sequence 154326?Understanding Involuntary Muscle Tissues: Smooth and Cardiac ExplainedWhich muscle tissues are classified as involuntary?Understanding Osmosis: The Movement of Water Through Cell MembranesWhat is the movement of water molecules from an area of high concentration to an area of low concentration through a selectively permeable membrane called?Understanding Testosterone: The Male Sex Hormone ExplainedWhat is testosterone known as?Understanding the Avascular Nature of the EpidermisWhat does it mean that the epidermis is described as avascular?Understanding the Causes of Tsunamis: Why Earthquakes Lead the PackWhich event has the potential to lead to a tsunami?Understanding the Cell Cycle: Why Interphase is Key to LifeThe cell cycle primarily takes place during which phase?Understanding the Chemical Symbol for Aluminum: What Does 'Al' Mean?What is the chemical symbol for aluminum?Understanding the Chemical Symbol for HydrogenWhich chemical symbol represents hydrogen?Understanding the Critical Role of Alveoli in Gas ExchangeWhich part of the respiratory system is primarily responsible for gas exchange?Understanding the First Step in the Scientific Method: Observation MattersWhat is the first step in the scientific method?Understanding the Four Types of Nucleotides Found in DNAHow many different types of nucleotides are found in DNA?Understanding the Importance of Sharing Results in the Scientific MethodDuring which phase of the scientific method are results typically shared with peers?Understanding the Key Features of Exergonic ReactionsWhat is characteristic of exergonic reactions?Understanding the Law of Segregation in Gamete FormationWhat does the law of segregation state regarding gamete formation?Understanding the Mitochondrion as the Powerhouse of Eukaryotic CellsWhich eukaryotic organelle is often referred to as the "powerhouse" due to its role in producing ATP?Understanding the Order of Urine Flow Through the BodyIn which order does urine flow through the body?Understanding the Ovulation Process and Its Role in ReproductionWhat is the process in which an ovarian follicle matures and releases a reproductive egg?Understanding the Role of Calcium in Muscle ContractionWhich ion binds to the troponin complex to initiate muscle contraction?Understanding the Role of Catalysts in Chemical ReactionsWhat is the role of catalysts in chemical reactions?Understanding the Role of Centrosomes in Cell DivisionWhat role do centrosomes play in cells?Understanding the Role of Insulin in Regulating Blood Glucose LevelsWhich hormone is responsible for regulating blood glucose levels?Understanding the Role of Messenger RNA in Protein SynthesisWhich type of RNA carries the genetic information from DNA to the ribosome?Understanding the Role of Phospholipids in Cell Membrane StructureWhich macromolecule serves as the main structural component of cell membranes?Understanding the Role of Plasma B Cells in Antibody ProductionWhich type of cell produces and releases antibodies?Understanding the Role of Proteins in the Cell's CytoskeletonThe cytoskeleton of a cell is primarily comprised of which macromolecule?Understanding the Role of Substrates on Enzyme StructureWhich term describes the impact of a substrate on an enzyme's shape?Understanding the Role of Synapses in Nervous System CommunicationWhat best describes a synapse?Understanding the Role of the Reticular Activating System in AlertnessWhat is the primary function of the reticular activation system in the body?Understanding the Scientific Method: What Comes After a Hypothesis?In the scientific method, which step follows the development of a hypothesis?Understanding the Threshold Value for Mammalian NeuronsWhat is the approximate threshold value for mammalian neurons?Understanding the Two Main Branches of the Nervous SystemWhat are the two main branches of the nervous system?Understanding the Unique Characteristics of LiquidsWhat characteristic do liquids possess regarding their volume and shape?Understanding the Vital Role of the Hypothalamus in Maintaining Balance within the BodyWhat is the primary role of the hypothalamus in the body?Understanding Why Viruses Depend on Host Cells for ReproductionWhich microorganism lacks its own metabolic pathway and can only reproduce inside a host cell?What Causes Osteoporosis: Understanding Bone HealthWhat results in osteoporosis?What Does the Gallbladder Release When We Eat Fatty Foods?What substance does the gallbladder release when fatty food is consumed?What Does the Symbol 'Ag' Represent in Chemistry?What element has the symbol 'Ag'?What does the symbol 'Ne' represent in chemistry?Which element is represented by the symbol 'Ne'?What Does the Symbol 'Ni' Stand For in the Periodic Table?Which element is represented by the symbol 'Ni'?What Does the Symbol 'Zn' Represent in Chemistry?Which of the following is represented by the symbol 'Zn'?What Does the Symbol for Calcium Really Mean?What is the symbol for calcium?What Happens in a Chemical Change? Discovering New SubstancesIn a chemical change, what type of substance is produced?What Makes Proteins Unique in Biology?Which organic molecule contains both an amine and a carboxyl group?What Substance Protects Your Skin from UV Radiation?Which substance protects the skin from UV radiation?Where Can You Find Cardiac Muscle Tissue?What is the only location where cardiac muscle tissue is found?Which heart vessels are most affected by a myocardial infarction?An MI affects which blood vessels of the heart?

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Which of the following metals has the symbol 'Fe'?
What type of biomolecule is primarily involved in energy storage and long-term energy use?
What step follows the analysis of results in the scientific method?
Which hormone is primarily responsible for regulating calcium levels in the body?
Which of the following elements has the atomic number closest to that of fluorine?
What is the charge of an electron?
What are purine bases in DNA and RNA?
What is the common characteristic of the metals mentioned in the questions?
What is the role of peer feedback in the scientific method?
Hemoglobin is primarily categorized as what type of biological molecule?
Which metal is represented by the symbol Be?
Smooth muscle tissue is primarily found in the walls of which organs?
In response to what condition do adipocytes mobilize energy sources?
What occurs during a double displacement reaction?
Red blood cells, also referred to as erythrocytes, are responsible for transporting what in the blood?
What is the chemical symbol for silicon?
What carries action potential in neurons?
What element is indicated by the symbol B?
How do enzymes catalyze biochemical reactions?
Which of the following elements has the symbol 'Kr'?
Why is nitrogen gas an extremely stable molecule?
What property of water explains its solvent abilities for certain substances?
What is the chemical symbol for lithium?
What type of bond is specifically broken during hydrolysis?
What is the position of potassium in the periodic table?
What is the primary energy source for muscle contraction?
What kind of pressure is essential for maintaining blood circulation?
In a plant in which fuzzy leaves (F) are dominant over smooth leaves (f), which cross will produce only smooth-leaved offspring?
What is used to determine a person's DNA sequence?
Which chamber of the heart is the largest?
NaCl is formed through which type of chemical bond?
What is the chemical symbol for Manganese?
What is the physical presentation of an organism's genes called?
What is the symbol for fluorine?
What type of blood do all arteries, except the pulmonary vein, carry?
What is the role of calcium in muscle contraction?
Which structure within a cell is responsible for producing ATP?
What element is represented by the symbol 'Xe'?
What is made up of similar tissues that perform the same function?
When are endocytic vesicles formed?
What is produced during a combustion reaction?
What do ribosomes synthesize within cells?
What are codons composed of?
What do enzymes change shape when they bind to?
What is the term used for a substance held at temperature and pressure where the solid, liquid, and gaseous states exist simultaneously?
What element corresponds to the symbol 'Br'?
Which type of reaction requires energy input?
Which element corresponds to the chemical symbol Mg?
What is the distinguishing property of Platinum compared to other transitional metals mentioned?
What does the term 'prone' refer to in anatomical position?
What is the chemical symbol for phosphorus?
What is most likely the pH of a solution containing many hydroxide ions (OH-) and few hydrogen ions (H+)?
Which group can be measured against the experimental group in an experiment?
What does the duodenum primarily do with chyme?
What characteristic makes enzymes specific in their function?
Nucleotides are made of which components?
What is matter primarily made of?
Which characteristic is common to both prokaryotic and eukaryotic cells?
Which of the following best describes endergonic reactions?
Which layer of the dermis consists of strong and elastic protein fibers arranged in a netlike pattern?
The law of independent assortment applies to which of the following examples?
Which element has the chemical symbol Si?
How many layers of tissue does the uterus have?
Which of the following is NOT a component of a nucleotide?
Homeostasis is primarily maintained by what type of feedback loops?
Which of the following represents the chemical symbol for strontium?
Which hormone is a key regulator of metabolism?
What does the law of independent assortment state?
Which of the following processes primarily supports cellular waste removal?
What type of cells can multipotent stem cells differentiate into?
Which element is represented by the symbol 'Pt'?
What is the chemical symbol for Copper?
What is the primary function of the cardiovascular system?
What property of water allows insects like water striders to walk on its surface?
What is the chemical symbol for Cobalt?
In humans, what main role does the hormone PTH serve in relation to bone health?
Which element has the symbol 'I'?
Acidosis is defined by a pH lower than which value?
Which of the following elements has the chemical symbol Pb?
Anions are best defined as:
What is the chemical symbol for oxygen?
Which state of matter is considered the least compressible?
What is made up of two or more organs performing similar functions?
What is the symbol for argon?
What is the primary role of bile in digestion?
What is the charge of a proton?
Through which structure does blood exit the glomerulus?
Which of the following statements is true about an ion?
What is primarily maintained by homeostasis in the body?
What organelle in the liver helps in the synthesis of lipid compounds?
What does the gallbladder do with bile?
Which of the following describes the reason groups on the periodic table exhibit similar chemical properties?
Which structure in the cell is primarily responsible for ATP production?
What type of blood do all veins, except the pulmonary artery, carry?
Which of the following best describes a tissue?
Protons and neutrons are primarily located in which part of the atom?
Cellulose is classified as which type of macromolecule?
The function of alveoli in the lungs is to provide what?
What allows the AIDS virus, which contains RNA, to insert viral DNA into the DNA of a host cell?
Which element corresponds to the symbol 'He'?
What types of elements are involved in an ionic bond?
What is a hypothetical explanation for an occurrence that is based on prior knowledge called?
Which process allows cells to absorb larger molecules or tiny organisms that cannot pass through the plasma membrane?
What is the atomic symbol for iodine?
What type of bond is formed in a water molecule?
Which element has the lowest atomic number among Barium, Manganese, and Iron?
Which hormones are known to increase with age?
Pluripotent stem cells can differentiate into?
Protein molecules are constructed from which of the following?
What is the term for the process of breathing in called?
What element is represented by the symbol H?
Where are the elements with the largest atomic radii found on the periodic table?
Which element has the symbol C?
What is the primary function of phospholipids in cell membranes?
What term describes the process of transporting oxygen and other nutrients to the tissues in the body?
Which parts of the body are responsible for producing melanin?
Which of the following elements is represented by the chemical symbol Al?
Which process does ATP play a crucial role in, particularly in muscle cells?
Which element is represented by the symbol O?
Bile is produced in the liver and stored in which organ?
What is the best explanation for the prolonged preservation of a male human body found at high altitude that died over 5,300 years ago?
Which body system is responsible for maintaining homeostasis?
What is the position of lying on one’s belly called?
What are the basic building blocks of proteins?
Which of the following is the chemical symbol for Barium?
What is the chemical symbol for tin?
What happens to an enzyme’s activity at high temperatures?
What is the main structural characteristic of cell membranes?
What can totipotent stem cells differentiate into?
If a scientist wants to analyze the size of DNA fragments, which method would they likely use?
Which three particles make up an atom?
What is the primary role of the duodenum in digestion?
Adipocytes are seen in adipose and fat tissue. They primarily store which type of nutrient?
What is enzyme activity sensitive to?
Which element corresponds to the symbol N?
What is the symbol for helium?
Which of the following actions is an example of a homeostatic mechanism?
What is the chemical symbol for potassium?
Which orbital is filled last in the electron configuration?
Which of the following elements is represented by the symbol 'Cl'?
What is a key characteristic of combustion reactions?
Which type of blood vessels carry blood away from the heart?
To separate genomic DNA fragments by size, which laboratory method is most useful?
What primarily determines the polarity of a bond?
What chemical messengers do T cells release to help direct the immune response?
In a combustion reaction, what is a necessary reactant?
What defines an ion?
What is the term for the force exerted by blood against a unit area of the blood vessel walls?
What are the base pairs in DNA structure?
Which structure is present in both prokaryotic and eukaryotic cells?
Which element has the symbol 'S'?
Where on the periodic table are the elements with the greatest electronegativity typically found?
What are formed when the plasma membrane surrounds a particle outside of the cell?
What are the three types of proteins?
Which element is known for the symbol 'Ar'?
What process involves the addition of water molecules to break down covalent bonds within macromolecules?
Antibodies (also known as immunoglobulins) are proteins produced by which type of cells?
Which metal among those listed is known for its significant use in electronics and wiring due to its high conductivity?
What is the only element with the symbol Na?
What is the position of lying flat on one’s back called?
Which metal would you expect to be more reactive based on the periodic table trends?
Which solution contains the maximum amount of solute that can be dissolved at the current temperature?
In a single displacement (replacement) reaction, what occurs?
What are the branching air passageways inside the lungs referred to as?
What is the chemical symbol for Gold?
Which bases are classified as pyrimidines?
Which type of muscle tissue is under voluntary control?
Adipocytes maintain proper energy balance by storing calories in the form of what?
Which of the following elements is classified as a nonmetal indicated by its symbol?
What is composed of a variety of cell types that work together to perform similar functions?
What occurs when atoms are rearranged to form new substances?
In what part of the body does inhalation primarily occur?
In a physical change, how is the material involved characterized before and after the change?

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