TEAS Science Practice Test | Free ATI TEAS Science Questions

This free TEAS Science practice test covers the four key areas: scientific reasoning, life science, earth and physical science, and human body science. It’s a challenging section that requires solid content knowledge, so plan to study it thoroughly. Start now with these 24 TEAS Science practice questions.

Question 1 of 24

1. Question
An unknown element is found to contain 45 protons and an atomic mass of 64, what is its atomic number?
- 1. It cannot be determined.
- 2. 19
- 3. 45
- 4. 64
Correct

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Question 2 of 24

2. Question
The square above is based on the eye color of two parents, one of whom has brown eyes and carries the recessive gene for green eyes (a). What is the probability that a biological child of these parents will have brown eyes?
- 1. 0%
- 2. 25%
- 3. 50%
- 4. 100%
Correct

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Question 3 of 24

3. Question
The spleen functions are part of the _____ system.

Which of the following completes the sentence above?
- 1. digestive
- 2. lymphatic
- 3. endocrine
- 4. circulatory
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Question 4 of 24

4. Question
Which of the following is an example of deductive reasoning?
- 1. Only 21% of a town’s population have expressed a desire to ban all cars. Therefore, the new proposition banning cars in the state is not likely to pass.
- 2. People who brush their teeth regularly have fewer instances of heart disease. Therefore, good dentistry can prevent heart attacks.
- 3. All soccer players who play professionally can kick well. Therefore, any future soccer player who is recruited to play professionally will be able to kick well.
- 4. All secretaries are good typists. Cynthia is a secretary. Therefore, Cynthia is a good typist.
Correct

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Question 5 of 24

5. Question
Which of the following is a possible cause of herniation of discs?
- 1. hepatitis
- 2. whiplash
- 3. plantar fasciitis
- 4. ulcer
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Question 6 of 24

6. Question
Which of the following is a characteristic of the autonomic nervous system?
- 1. It regulates the voluntary control of body movements through the skeletal muscles.
- 2. It is the part of the nervous system consisting of the brain and spinal cord.
- 3. It regulates involuntary activity in the heart, stomach, lungs, and intestines.
- 4. It is thought to be the center of intelligence.
Correct

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Question 7 of 24

7. Question
During photosynthesis, which two compounds are combined to create the output of glucose and oxygen?
- 1. Carbon dioxide and water.
- 2. Carbon dioxide and bicarbonate.
- 3. Bicarbonate and water.
- 4. Carbon dioxide and multiple alkaline substances.
Correct

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Question 8 of 24

8. Question
Questions 8 & 9 are based on the following diagram:

Which of the following is true about the frog?
- 1. It is a member of the salamandridae family.
- 2. It is a type of amphibian.
- 3. It is a non-vertebrate.
- 4. It is closer to most tetrapods than to most newts.
Correct

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Question 9 of 24

9. Question
Which statement can be inferred about amphibians?
- 1. All amphibians are salamandridae, but not all salamandridae are amphibians.
- 2. Some amphibians are vertebrates, but not all amphibians are vertebrates.
- 3. Some salamandridae are amphibians, but not all amphibians are tetrapods.
- 4. All amphibians are vertebrates, but not all vertebrates are amphibians.
Correct

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Question 10 of 24

10. Question
What would this diagram be useful for?
- 1. determining outcomes for potential infection
- 2. diagnosing an infectious disease
- 3. controlling the spread of disease in undeveloped countries
- 4. training nurses to detect early onset symptoms of disease
Correct

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Question 11 of 24

11. Question
What type of bond between the complementary bases of DNA stabilizes the double helix structure?
- 1. covalent
- 2. ionic
- 3. hydrogen
- 4. nuclear
Correct

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Question 12 of 24

12. Question
Which of the following subatomic particles are found inside of an atom’s nucleus?
- 1. electrons, neutrons, protons
- 2. neutrons, protons
- 3. electrons, protons
- 4. electrons
Correct

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Question 13 of 24

13. Question
Which of the following statements is true regarding trophic levels?
- 1. Tertiary consumers acquire more energy content than secondary consumers.
- 2. Producers acquire less energy than primary consumers.
- 3. Secondary consumers acquire more energy than primary consumers.
- 4. Tertiary consumers acquire less energy than primary consumers.
Correct

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Question 14 of 24

14. Question
Why does the human eye perceive a red colored dress as the color red?
- 1. The molecules of the dress do not absorb red light wavelengths.
- 2. The molecules of the dress absorb green and blue light wavelengths.
- 3. A red dress will primarily absorb red light wavelengths.
- 4. A red dress will not absorb light wavelengths from non-red colors.
Correct

Incorrect
Question 15 of 24

15. Question
In a lab experiment designed to test the rate at which plants grow under artificial light, the kind of light used is which type of variable?
- 1. dependent
- 2. independent
- 3. random
- 4. responding
Correct

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Question 16 of 24

16. Question
Which organ system is primarily responsible for regulating metabolism, mood, and growth?
- 1. respiratory system
- 2. digestive system
- 3. endocrine system
- 4. lymphatic system
Correct

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Question 17 of 24

17. Question
In a vacuum, why doesn’t an elephant accelerate faster than a penny as it falls to the ground?
- 1. Vector components of an elephant are more complex than those of a penny.
- 2. An elephant is not a projectile, while a penny is.
- 3. They both have an acceleration of 9.8 m/s².
- 4. The elephant is greater in mass but is slowed less by the effects of air resistance.
Correct

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Question 18 of 24

18. Question
Which train described below would have the greatest momentum?
- 1. A 9500 kg train car moving at 200 mph
- 2. An 8000 kg train car moving at 215 mph
- 3. A 9300 kg train car moving at 190 mph
- 4. A 8600 kg train car mobbing at 195 mph
Correct

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Question 19 of 24

19. Question
A scientist found that when an invasive species was introduced into a river, the population of salmon native to the region decreased. The type of correlation between these two populations could best be described as
- 1. a direct relationship.
- 2. an inverse relationship.
- 3. a direct and indirect relationship.
- 4. no decisive relationship.
Correct

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Question 20 of 24

20. Question
The addition of a catalyst to a chemical reaction will have what effect?
- 1. Increase the energy required for the reaction to take place.
- 2. Increase the time required for the reaction to take place.
- 3. Increase the rate at which the reaction takes place.
- 4. Reduce the amount of products in the reaction.
Correct

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Question 21 of 24

21. Question
The pharynx is part of what body system?
- 1. respiratory
- 2. muscular
- 3. lymphatic
- 4. circulatory
Correct

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Question 22 of 24

22. Question
Which of the following is true about eukaryotic cells?
- 1. They do not contain lysosomes.
- 2. They contain one chromosome.
- 3. They do not contain a nucleus.
- 4. They contain mitochondria.
Correct

Incorrect
Question 23 of 24

23. Question
What characteristic of an element determines its specific isotope?
- 1. Number of protons.
- 2. Number of neutrons.
- 3. Number of electrons.
- 4. Number of quarks.
Correct

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Question 24 of 24

24. Question
What is NOT true about RNA?
- 1. It contains a sugar called ribose.
- 2. Thymine is not one of its base pairings.
- 3. It is unstable in alkaline conditions.
- 4. Its sugar is more reduced than DNA’s sugar.
Correct

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Quiz Summary

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Results

Results

Categories

1. Question

An unknown element is found to contain 45 protons and an atomic mass of 64, what is its atomic number?

2. Question

The square above is based on the eye color of two parents, one of whom has brown eyes and carries the recessive gene for green eyes (a). What is the probability that a biological child of these parents will have brown eyes?

3. Question

Which of the following completes the sentence above?

4. Question

Which of the following is an example of deductive reasoning?

5. Question

Which of the following is a possible cause of herniation of discs?

6. Question

Which of the following is a characteristic of the autonomic nervous system?

7. Question

During photosynthesis, which two compounds are combined to create the output of glucose and oxygen?

8. Question

Questions 8 & 9 are based on the following diagram:

Which of the following is true about the frog?

9. Question

Which statement can be inferred about amphibians?

10. Question

What would this diagram be useful for?

11. Question

What type of bond between the complementary bases of DNA stabilizes the double helix structure?

12. Question

Which of the following subatomic particles are found inside of an atom’s nucleus?

13. Question

Which of the following statements is true regarding trophic levels?

14. Question

Why does the human eye perceive a red colored dress as the color red?

15. Question

In a lab experiment designed to test the rate at which plants grow under artificial light, the kind of light used is which type of variable?

16. Question

Which organ system is primarily responsible for regulating metabolism, mood, and growth?

17. Question

In a vacuum, why doesn’t an elephant accelerate faster than a penny as it falls to the ground?

18. Question

Which train described below would have the greatest momentum?

19. Question

A scientist found that when an invasive species was introduced into a river, the population of salmon native to the region decreased. The type of correlation between these two populations could best be described as

20. Question

The addition of a catalyst to a chemical reaction will have what effect?

21. Question

The pharynx is part of what body system?

22. Question

Which of the following is true about eukaryotic cells?

23. Question

What characteristic of an element determines its specific isotope?

24. Question

What is NOT true about RNA?

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