ATI TEAS BIOLOGY AND CHEMISTRY ACTUAL EXAM 2025 |144 QUESTIONS
WITH 100% ACCURATE RATIONALES
1. Explain how homeostasis contributes to the overall
functioning of the human body.
It allows for rapid changes in body temperature.
It ensures that internal conditions remain stable despite
external changes.
It increases the efficiency of the digestive system.
It prevents the body from responding to environmental
stimuli.
2. If a substance transitions from a gas to a solid, what change
occurs in the intermolecular forces, and how does this
affect the properties of the substance?
Intermolecular forces weaken, leading to increased
fluidity.
Intermolecular forces strengthen, resulting in a rigid
structure.
Intermolecular forces remain unchanged, keeping the
substance gaseous.
Intermolecular forces become negligible, allowing for
expansion.
3. An intracellular chemical signal can be produced in the
cell membrane. Once it is produced, where does it go?
, To a different cell
To another part of the same cell
To a region right outside the cell
To an area with a high ion concentration
4. The reaction 2NaI+Cl2→2NaCl+I2
demonstrates a: decomposition
reaction.
, synthesis reaction.
single-replacement reaction.
double-replacement reaction.
5. If a patient has a condition that impairs the function of the
right atrium, what might be the expected impact on blood
oxygen levels throughout the body?
Increased oxygen levels due to improved circulation.
Decreased oxygen levels due to reduced blood flow to the
lungs.
Stable oxygen levels as the heart compensates.
Increased oxygen levels due to enhanced lung function.
6. 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?
Stomach
Esophagus
Oral
cavity
Small intestine
, 7. What is one of the fundamental principles of cell theory?
All living organisms are composed of cells.
Cells can arise from non-living
matter. Cells are the smallest
units of matter.
All cells have the same structure and function.
8. The structure through which urine passes to be eliminated
from the body is the:
ureter
WITH 100% ACCURATE RATIONALES
1. Explain how homeostasis contributes to the overall
functioning of the human body.
It allows for rapid changes in body temperature.
It ensures that internal conditions remain stable despite
external changes.
It increases the efficiency of the digestive system.
It prevents the body from responding to environmental
stimuli.
2. If a substance transitions from a gas to a solid, what change
occurs in the intermolecular forces, and how does this
affect the properties of the substance?
Intermolecular forces weaken, leading to increased
fluidity.
Intermolecular forces strengthen, resulting in a rigid
structure.
Intermolecular forces remain unchanged, keeping the
substance gaseous.
Intermolecular forces become negligible, allowing for
expansion.
3. An intracellular chemical signal can be produced in the
cell membrane. Once it is produced, where does it go?
, To a different cell
To another part of the same cell
To a region right outside the cell
To an area with a high ion concentration
4. The reaction 2NaI+Cl2→2NaCl+I2
demonstrates a: decomposition
reaction.
, synthesis reaction.
single-replacement reaction.
double-replacement reaction.
5. If a patient has a condition that impairs the function of the
right atrium, what might be the expected impact on blood
oxygen levels throughout the body?
Increased oxygen levels due to improved circulation.
Decreased oxygen levels due to reduced blood flow to the
lungs.
Stable oxygen levels as the heart compensates.
Increased oxygen levels due to enhanced lung function.
6. 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?
Stomach
Esophagus
Oral
cavity
Small intestine
, 7. What is one of the fundamental principles of cell theory?
All living organisms are composed of cells.
Cells can arise from non-living
matter. Cells are the smallest
units of matter.
All cells have the same structure and function.
8. The structure through which urine passes to be eliminated
from the body is the:
ureter
