ATI TEAS 7 SCIENCE - Practice Test with Fully
Worked Solutions
30 original practice questions, each with a step-by-step worked
explanation
For students preparing for the ATI TEAS 7 (nursing and allied-health entrance exam). This is
original practice material written for study purposes. It is NOT a copy of real TEAS exam
questions, and it is not affiliated with ATI.
How to use this document
• Answer all 30 questions on paper first, without looking at the solutions. Each question has 4
options (A-D), in the style of the TEAS 7 Science section.
• Then check yourself in the Worked Solutions section, where every question is explained step
by step.
• A quick answer grid and a self-scoring guide are included at the end.
• Topics covered, following the TEAS 7 Science blueprint: human anatomy and physiology,
biology, chemistry, and scientific reasoning.
1. Which heart chamber receives oxygenated blood returning from the lungs through the
pulmonary veins?
A) Right atrium
B) Right ventricle
C) Left atrium
D) Left ventricle
2. Which blood type is considered the universal red-cell donor?
A) AB positive
B) A negative
C) B positive
D) O negative
3. Which organ produces insulin to help regulate blood glucose?
A) Liver
B) Pancreas
C) Gallbladder
, D) Spleen
4. Where does most nutrient absorption take place in the digestive system?
A) Stomach
B) Large intestine
C) Small intestine
D) Esophagus
5. What is the functional unit of the kidney that filters blood and forms urine?
A) Neuron
B) Alveolus
C) Nephron
D) Villus
6. A solution with a pH of 4 is best described as:
A) Neutral
B) Acidic
C) Basic (alkaline)
D) A buffer only
7. The atomic number of an element equals the number of:
A) Neutrons only
B) Protons
C) Electrons plus neutrons in every case
D) Isotopes
8. In DNA, adenine (A) normally pairs with which base?
A) Cytosine
B) Guanine
C) Uracil
D) Thymine
9. Which cell structure is the main site of ATP production?
A) Nucleus
B) Ribosome
C) Mitochondrion
D) Golgi apparatus
Worked Solutions
30 original practice questions, each with a step-by-step worked
explanation
For students preparing for the ATI TEAS 7 (nursing and allied-health entrance exam). This is
original practice material written for study purposes. It is NOT a copy of real TEAS exam
questions, and it is not affiliated with ATI.
How to use this document
• Answer all 30 questions on paper first, without looking at the solutions. Each question has 4
options (A-D), in the style of the TEAS 7 Science section.
• Then check yourself in the Worked Solutions section, where every question is explained step
by step.
• A quick answer grid and a self-scoring guide are included at the end.
• Topics covered, following the TEAS 7 Science blueprint: human anatomy and physiology,
biology, chemistry, and scientific reasoning.
1. Which heart chamber receives oxygenated blood returning from the lungs through the
pulmonary veins?
A) Right atrium
B) Right ventricle
C) Left atrium
D) Left ventricle
2. Which blood type is considered the universal red-cell donor?
A) AB positive
B) A negative
C) B positive
D) O negative
3. Which organ produces insulin to help regulate blood glucose?
A) Liver
B) Pancreas
C) Gallbladder
, D) Spleen
4. Where does most nutrient absorption take place in the digestive system?
A) Stomach
B) Large intestine
C) Small intestine
D) Esophagus
5. What is the functional unit of the kidney that filters blood and forms urine?
A) Neuron
B) Alveolus
C) Nephron
D) Villus
6. A solution with a pH of 4 is best described as:
A) Neutral
B) Acidic
C) Basic (alkaline)
D) A buffer only
7. The atomic number of an element equals the number of:
A) Neutrons only
B) Protons
C) Electrons plus neutrons in every case
D) Isotopes
8. In DNA, adenine (A) normally pairs with which base?
A) Cytosine
B) Guanine
C) Uracil
D) Thymine
9. Which cell structure is the main site of ATP production?
A) Nucleus
B) Ribosome
C) Mitochondrion
D) Golgi apparatus
