ATI TEAS Version 7 Science Practice Test
2026 | Complete Exam Prep Questions,
Answers & Detailed Rationales
Which blood group is the universal donor? - ANS✔✔-Type O
A universal blood donor has type O, universal aceptor is type AB.
Blood oxygen levels are most likely low when blood _________. - ANS✔✔-fills the right
atrium
An intracellular chemical signal can be produced in the cell membrane. Once it is
produced, where does it go? - ANS✔✔-To another part of the same cell
After food has been masticated in the oral cavity, where does it go next? - ANS✔✔-
pharynx
The diffusion of nutrients through the walls of the digestive system is critical to
homeostasis in the body. Where does the majority of this diffusion take place in the
digestive system? - ANS✔✔-small intestine
As soon as an invader, known as a(n) _____, enters the body, the body begins to fight.
- ANS✔✔-pathogen
Where is skeletal muscle found? - ANS✔✔-attached to bones
If a person smells something sweet, what form of information is this initially perceived as
in the nervous system? - ANS✔✔-sensory
While hiking, a person is startled after encountering a bear. Her palms get sweaty and
her heart starts racing. Which part of her nervous system was directly stimulated? -
ANS✔✔-sympathetic
Which of the following types of tissues include cells of the immune system and of the
blood? - ANS✔✔-connective tissue
Which best describes homeostasis? - ANS✔✔-A relatively constant environment within
the body
Fertilization (the fusing of one sperm and an ovum) results in a(n) _________. -
ANS✔✔-zygote
Which of the following are included in the male reproductive system? - ANS✔✔-the
penis and epididymis
What structure plays a role in air conduction? - ANS✔✔-trachea
What body system is the skeletal system most closely associated with when
hematopoises happens? - ANS✔✔-Cardiovascular system
What is the final structure through which urine must travel to empty out of the body? -
ANS✔✔-urethra
Which sequence describes the hierarchy level of biological organization? - ANS✔✔-
Kingdom, Phylum, Class, Order, Family, Genus, Species
Which example is part of the scientific method? - ANS✔✔-A researcher analyzes how
many plants respond well to a new fertilizer.
What standard is used to make comparisons in experiments? - ANS✔✔-control group
Why did it take many years for the cell theory to be developed? - ANS✔✔-
Advancements in microscopy took place slowly.
2026 | Complete Exam Prep Questions,
Answers & Detailed Rationales
Which blood group is the universal donor? - ANS✔✔-Type O
A universal blood donor has type O, universal aceptor is type AB.
Blood oxygen levels are most likely low when blood _________. - ANS✔✔-fills the right
atrium
An intracellular chemical signal can be produced in the cell membrane. Once it is
produced, where does it go? - ANS✔✔-To another part of the same cell
After food has been masticated in the oral cavity, where does it go next? - ANS✔✔-
pharynx
The diffusion of nutrients through the walls of the digestive system is critical to
homeostasis in the body. Where does the majority of this diffusion take place in the
digestive system? - ANS✔✔-small intestine
As soon as an invader, known as a(n) _____, enters the body, the body begins to fight.
- ANS✔✔-pathogen
Where is skeletal muscle found? - ANS✔✔-attached to bones
If a person smells something sweet, what form of information is this initially perceived as
in the nervous system? - ANS✔✔-sensory
While hiking, a person is startled after encountering a bear. Her palms get sweaty and
her heart starts racing. Which part of her nervous system was directly stimulated? -
ANS✔✔-sympathetic
Which of the following types of tissues include cells of the immune system and of the
blood? - ANS✔✔-connective tissue
Which best describes homeostasis? - ANS✔✔-A relatively constant environment within
the body
Fertilization (the fusing of one sperm and an ovum) results in a(n) _________. -
ANS✔✔-zygote
Which of the following are included in the male reproductive system? - ANS✔✔-the
penis and epididymis
What structure plays a role in air conduction? - ANS✔✔-trachea
What body system is the skeletal system most closely associated with when
hematopoises happens? - ANS✔✔-Cardiovascular system
What is the final structure through which urine must travel to empty out of the body? -
ANS✔✔-urethra
Which sequence describes the hierarchy level of biological organization? - ANS✔✔-
Kingdom, Phylum, Class, Order, Family, Genus, Species
Which example is part of the scientific method? - ANS✔✔-A researcher analyzes how
many plants respond well to a new fertilizer.
What standard is used to make comparisons in experiments? - ANS✔✔-control group
Why did it take many years for the cell theory to be developed? - ANS✔✔-
Advancements in microscopy took place slowly.
