TEAS 7 (SET 1) STUDY GUIDE 2026
COMPLETE QUESTIONS WITH CORRECT
DETAILED ANSWERS || 100% GUARANTEED
PASS <RECENT VERSION>
Topic: Human Anatomy & Physiology, Chemistry, Biology, Scientific Reasoning
Instructions: Study the question, select your answer, and review the detailed explanation.
1. Which of the following is the primary function of the ribosomes within a cell?
A) Lipid synthesis
B) Protein synthesis
C) ATP production
D) Storage of genetic material
Explanation: Ribosomes are the sites of protein synthesis, where mRNA is translated into amino
acid chains.
2. In the hierarchy of biological organization, which level is more complex than an organ but
less complex than an organism?
A) Tissue
B) Cell
C) Organ System
D) Molecule
Explanation: The correct order is: Cell → Tissue → Organ → Organ System → Organism.
3. A balloon filled with helium gas rises in the air because:
A) The density of helium is less than the density of air.
B) The pressure inside the balloon is greater than atmospheric pressure.
C) Helium is an inert gas.
D) The temperature inside the balloon is higher.
Explanation: Buoyancy is determined by density. Less dense gases (like helium) rise in a more
dense fluid (like air).
4. Which gland is considered the "master gland" of the endocrine system?
A) Thyroid
B) Adrenal
,C) Pancreas
D) Pituitary
Explanation: The pituitary gland secretes hormones that regulate many other endocrine glands.
5. In a chemical reaction, enzymes act as catalysts by:
A) Increasing the activation energy.
B) Being consumed in the reaction.
C) Lowering the activation energy.
D) Shifting the equilibrium to favor products.
Explanation: Enzymes speed up reactions by providing an alternative pathway with a lower
activation energy.
6. Which blood vessel type carries oxygenated blood away from the heart?
A) Veins (except pulmonary)
B) Arteries (except pulmonary)
C) Capillaries
D) Venules
Explanation: Systemic arteries carry oxygen-rich blood from the heart to the body. The
pulmonary artery is the exception, carrying deoxygenated blood to the lungs.
7. The process by which water moves across a semipermeable membrane from an area of low
solute concentration to high solute concentration is called:
A) Active transport
B) Osmosis
C) Diffusion
D) Filtration
Explanation: Osmosis is the specific diffusion of water across a membrane to balance solute
concentrations.
8. In genetics, if an organism has two different alleles for a given trait (e.g., Bb), it is said to be:
A) Homozygous dominant
B) Homozygous recessive
C) Heterozygous
D) Hemizygous
Explanation: Heterozygous means possessing two different alleles for a single gene.
9. Which part of the brain is responsible for balance and fine motor coordination?
A) Cerebrum
B) Medulla oblongata
C) Cerebellum
,D) Hypothalamus
Explanation: The cerebellum coordinates voluntary movements, posture, and balance.
10. During cellular respiration, the majority of ATP is produced in which stage?
A) Glycolysis
B) Krebs (Citric Acid) Cycle
C) Electron Transport Chain & Chemiosmosis
D) Fermentation
Explanation: The ETC creates a proton gradient that drives ATP synthase, producing ~32-34 ATP
per glucose.
11. Which of the following is a function of the skeletal system?
A) Hormone production
B) Blood cell production
C) Lipid digestion
D) Immune response initiation
Explanation: Hematopoiesis, the production of blood cells, occurs in the bone marrow.
12. In the periodic table, elements in the same vertical column share similar chemical
properties because they have the same:
A) Atomic number
B) Number of electron shells
C) Number of valence electrons
D) Atomic mass
Explanation: Valence electrons determine bonding behavior. Groups (columns) have the same
number of valence electrons.
13. Which chamber of the heart receives deoxygenated blood from the body?
A) Left atrium
B) Left ventricle
C) Right atrium
D) Right ventricle
Explanation: The right atrium receives blood from the superior/inferior vena cava.
14. A solution with a pH of 3 is considered:
A) Neutral
B) Basic
C) Acidic
D) Alkaline
Explanation: pH scale: 0-6.9 = Acidic, 7 = Neutral, 7.1-14 = Basic.
, 15. The breakdown of large food molecules into smaller, absorbable units is primarily a(n)
______ process.
A) Anabolic
B) Catabolic
C) Homeostatic
D) Metabolic
Explanation: Catabolic reactions break down complex molecules (like digestion), releasing
energy.
16. Which type of tissue is specialized for contraction and movement?
A) Epithelial
B) Connective
C) Nervous
D) Muscle
Explanation: Muscle tissue (skeletal, cardiac, smooth) has the unique property of contractility.
17. In an experiment, the variable that is deliberately changed by the researcher is the:
A) Dependent variable
B) Controlled variable
C) Independent variable
D) Confounding variable
Explanation: The independent variable is the "cause" that is manipulated to observe its effect.
18. The kidneys are primarily responsible for:
A) Producing insulin
B) Filtering blood and forming urine
C) Storing bile
D) Synthesizing hemoglobin
Explanation: The kidneys' main functions are excretion, fluid/electrolyte balance, and blood
filtration.
19. A chemical bond formed by the sharing of one or more pairs of electrons between atoms
is a:
A) Ionic bond
B) Covalent bond
C) Hydrogen bond
D) Metallic bond
Explanation: Covalent bonds involve electron sharing. Ionic bonds involve electron transfer.
COMPLETE QUESTIONS WITH CORRECT
DETAILED ANSWERS || 100% GUARANTEED
PASS <RECENT VERSION>
Topic: Human Anatomy & Physiology, Chemistry, Biology, Scientific Reasoning
Instructions: Study the question, select your answer, and review the detailed explanation.
1. Which of the following is the primary function of the ribosomes within a cell?
A) Lipid synthesis
B) Protein synthesis
C) ATP production
D) Storage of genetic material
Explanation: Ribosomes are the sites of protein synthesis, where mRNA is translated into amino
acid chains.
2. In the hierarchy of biological organization, which level is more complex than an organ but
less complex than an organism?
A) Tissue
B) Cell
C) Organ System
D) Molecule
Explanation: The correct order is: Cell → Tissue → Organ → Organ System → Organism.
3. A balloon filled with helium gas rises in the air because:
A) The density of helium is less than the density of air.
B) The pressure inside the balloon is greater than atmospheric pressure.
C) Helium is an inert gas.
D) The temperature inside the balloon is higher.
Explanation: Buoyancy is determined by density. Less dense gases (like helium) rise in a more
dense fluid (like air).
4. Which gland is considered the "master gland" of the endocrine system?
A) Thyroid
B) Adrenal
,C) Pancreas
D) Pituitary
Explanation: The pituitary gland secretes hormones that regulate many other endocrine glands.
5. In a chemical reaction, enzymes act as catalysts by:
A) Increasing the activation energy.
B) Being consumed in the reaction.
C) Lowering the activation energy.
D) Shifting the equilibrium to favor products.
Explanation: Enzymes speed up reactions by providing an alternative pathway with a lower
activation energy.
6. Which blood vessel type carries oxygenated blood away from the heart?
A) Veins (except pulmonary)
B) Arteries (except pulmonary)
C) Capillaries
D) Venules
Explanation: Systemic arteries carry oxygen-rich blood from the heart to the body. The
pulmonary artery is the exception, carrying deoxygenated blood to the lungs.
7. The process by which water moves across a semipermeable membrane from an area of low
solute concentration to high solute concentration is called:
A) Active transport
B) Osmosis
C) Diffusion
D) Filtration
Explanation: Osmosis is the specific diffusion of water across a membrane to balance solute
concentrations.
8. In genetics, if an organism has two different alleles for a given trait (e.g., Bb), it is said to be:
A) Homozygous dominant
B) Homozygous recessive
C) Heterozygous
D) Hemizygous
Explanation: Heterozygous means possessing two different alleles for a single gene.
9. Which part of the brain is responsible for balance and fine motor coordination?
A) Cerebrum
B) Medulla oblongata
C) Cerebellum
,D) Hypothalamus
Explanation: The cerebellum coordinates voluntary movements, posture, and balance.
10. During cellular respiration, the majority of ATP is produced in which stage?
A) Glycolysis
B) Krebs (Citric Acid) Cycle
C) Electron Transport Chain & Chemiosmosis
D) Fermentation
Explanation: The ETC creates a proton gradient that drives ATP synthase, producing ~32-34 ATP
per glucose.
11. Which of the following is a function of the skeletal system?
A) Hormone production
B) Blood cell production
C) Lipid digestion
D) Immune response initiation
Explanation: Hematopoiesis, the production of blood cells, occurs in the bone marrow.
12. In the periodic table, elements in the same vertical column share similar chemical
properties because they have the same:
A) Atomic number
B) Number of electron shells
C) Number of valence electrons
D) Atomic mass
Explanation: Valence electrons determine bonding behavior. Groups (columns) have the same
number of valence electrons.
13. Which chamber of the heart receives deoxygenated blood from the body?
A) Left atrium
B) Left ventricle
C) Right atrium
D) Right ventricle
Explanation: The right atrium receives blood from the superior/inferior vena cava.
14. A solution with a pH of 3 is considered:
A) Neutral
B) Basic
C) Acidic
D) Alkaline
Explanation: pH scale: 0-6.9 = Acidic, 7 = Neutral, 7.1-14 = Basic.
, 15. The breakdown of large food molecules into smaller, absorbable units is primarily a(n)
______ process.
A) Anabolic
B) Catabolic
C) Homeostatic
D) Metabolic
Explanation: Catabolic reactions break down complex molecules (like digestion), releasing
energy.
16. Which type of tissue is specialized for contraction and movement?
A) Epithelial
B) Connective
C) Nervous
D) Muscle
Explanation: Muscle tissue (skeletal, cardiac, smooth) has the unique property of contractility.
17. In an experiment, the variable that is deliberately changed by the researcher is the:
A) Dependent variable
B) Controlled variable
C) Independent variable
D) Confounding variable
Explanation: The independent variable is the "cause" that is manipulated to observe its effect.
18. The kidneys are primarily responsible for:
A) Producing insulin
B) Filtering blood and forming urine
C) Storing bile
D) Synthesizing hemoglobin
Explanation: The kidneys' main functions are excretion, fluid/electrolyte balance, and blood
filtration.
19. A chemical bond formed by the sharing of one or more pairs of electrons between atoms
is a:
A) Ionic bond
B) Covalent bond
C) Hydrogen bond
D) Metallic bond
Explanation: Covalent bonds involve electron sharing. Ionic bonds involve electron transfer.
