TEAS Science Practice Questions
The TEAS Science section requires students to understand biology, anatomy and physiology, chemistry, and scientific reasoning. The best way to prepare is to combine content review with practice questions.
Questions
1. What is the basic structural and functional unit of life?
- A. Tissue
- B. Cell
- C. Organ
- D. System
- Answer: B
2. Which organelle contains most of a cell's genetic material?
- A. Ribosome
- B. Nucleus
- C. Lysosome
- D. Golgi apparatus
- Answer: B
3. What is the primary function of red blood cells?
- A. Fight infection
- B. Transport oxygen
- C. Produce hormones
- D. Digest food
- Answer: B
4. Which organ pumps blood through the body?
- A. Liver
- B. Heart
- C. Kidney
- D. Lung
- Answer: B
5. Where does most gas exchange occur in the lungs?
- A. Trachea
- B. Alveoli
- C. Esophagus
- D. Diaphragm
- Answer: B
6. What is the primary function of the kidneys?
- A. Pump blood
- B. Filter blood and help regulate fluid balance
- C. Produce bile
- D. Exchange oxygen
- Answer: B
7. Which system is responsible for breaking down food?
- A. Digestive
- B. Nervous
- C. Skeletal
- D. Endocrine
- Answer: A
8. What is DNA?
- A. A type of carbohydrate
- B. Genetic material
- C. A digestive enzyme
- D. A mineral
- Answer: B
9. Which molecule is commonly called the cell's main energy currency?
- A. DNA
- B. ATP
- C. RNA
- D. Glucose only
- Answer: B
10. Which blood cells are primarily involved in immune defense?
- A. Red blood cells
- B. White blood cells
- C. Platelets
- D. Plasma proteins only
- Answer: B
11. What is the function of platelets?
- A. Oxygen transport
- B. Blood clotting
- C. Digestion
- D. Hormone production
- Answer: B
12. Which body system coordinates rapid responses to stimuli?
- A. Nervous system
- B. Digestive system
- C. Skeletal system
- D. Reproductive system
- Answer: A
13. What is homeostasis?
- A. Maintaining relatively stable internal conditions
- B. Cell division only
- C. Digestion
- D. Movement
- Answer: A
14. Which structure controls what enters and leaves a cell?
- A. Cell membrane
- B. Nucleus
- C. Ribosome
- D. Chromosome
- Answer: A
15. Which type of molecule contains amino acids as its building blocks?
- A. Protein
- B. Lipid
- C. Nucleic acid
- D. Mineral
- Answer: A
16. What is the pH of a neutral solution at approximately room temperature?
- A. 1
- B. 5
- C. 7
- D. 14
- Answer: C
17. A substance with a pH below 7 is generally considered:
- A. Acidic
- B. Neutral
- C. Basic
- D. Metallic
- Answer: A
18. Which particle has a negative electrical charge?
- A. Proton
- B. Neutron
- C. Electron
- D. Nucleus
- Answer: C
19. Which particle has no electrical charge?
- A. Proton
- B. Neutron
- C. Electron
- D. Ion
- Answer: B
20. What is the smallest unit of an element that retains the element's properties?
- A. Cell
- B. Atom
- C. Tissue
- D. Organ
- Answer: B
21. What is the independent variable in an experiment?
- A. The factor deliberately changed by the researcher
- B. The measured outcome
- C. The conclusion
- D. The control group
- Answer: A
22. What is the dependent variable?
- A. The factor measured in response to a change
- B. The factor deliberately changed
- C. The hypothesis
- D. The control condition
- Answer: A
23. Why is a control group useful?
- A. It provides a comparison for evaluating experimental effects
- B. It guarantees the hypothesis is correct
- C. It removes all variables
- D. It changes the independent variable
- Answer: A
24. What does a hypothesis represent?
- A. A testable proposed explanation
- B. A proven law
- C. A random measurement
- D. The final result only
- Answer: A
25. Which process produces two genetically similar daughter cells?
- A. Mitosis
- B. Meiosis
- C. Fertilization
- D. Mutation
- Answer: A
26. Which system produces hormones that regulate many body functions?
- A. Endocrine
- B. Skeletal
- C. Respiratory
- D. Digestive
- Answer: A
27. What is the main function of the small intestine?
- A. Most nutrient absorption
- B. Pumping blood
- C. Gas exchange
- D. Urine storage
- Answer: A
28. Which structure separates the chest cavity from the abdominal cavity and assists breathing?
- A. Diaphragm
- B. Femur
- C. Sternum
- D. Pancreas
- Answer: A
29. Which type of bond involves sharing electrons?
- A. Covalent
- B. Ionic
- C. Metallic only
- D. Nuclear
- Answer: A
30. What should you do first when analyzing a science experiment question?
- A. Identify the variables and what is being measured
- B. Guess the answer
- C. Ignore the data
- D. Choose the longest option
- Answer: A
TEAS Science Tip
Don't study Science as one enormous subject. Divide your preparation into: Anatomy & Physiology → Biology → Chemistry → Scientific Reasoning Then use practice questions to identify weak areas.
