Science – TEAS 7 Free Practice Test
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Studying for the science section can be overwhelming, but it doesn’t have to be. The best place to start is this page by taking a realistic, timed practice test. This test simulates the real TEAS exam which includes 18 questions on A&P, 9 questions on scientific reasoning, 8 biology questions, and 8 chemistry questions.
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Follow along with Lemitra as she goes through a TEAS science practice test
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Question 1 of 50
1. Question
A patient presents with excessive bruising, excessive bleeding, and slow wound healing. Which of the following does the patient’s blood test reveal?
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Question 2 of 50
2. Question
Blood Oxygen levels are most likely low when blood does which of the following?
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Question 3 of 50
3. Question
An intracellular chemical signal can be produced in the cell membrane. Once it is produced, it goes to which of the following?
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Question 4 of 50
4. Question
Which of the following enzymes breaks down proteins?
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Question 5 of 50
5. Question
The diffusion of nutrients through the walls of the digestive system is critical to homeostasis in the body. The majority of this diffusion takes place in which of the following areas of the digestive system?
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Question 6 of 50
6. Question
As soon as this invader enters the body, the body initiates immunological responses. Which of the following is the name of this invader?
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Question 7 of 50
7. Question
Which of the following muscles do circulating hormones stimulate?
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Question 8 of 50
8. Question
Which of the following actions contributes to minimizing bias when selecting a sample for an experiment?
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Question 9 of 50
9. Question
If a person smells something sweet, which of the following forms of information is this initially perceived as in the nervous system?
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Question 10 of 50
10. Question
While hiking, a person is startled after encountering a bear. Her palms get sweaty and her heart starts racing. Which of the following parts of her nervous system was directly stimulated?
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Question 11 of 50
11. Question
Which of the following types of tissues include cells of the immune system and of the blood?
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Question 12 of 50
12. Question
Which of the following correctly describes homeostasis?
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Question 13 of 50
13. Question
Fertilization (the fusing of one sperm and an ovum) results in which of the following?
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Question 14 of 50
14. Question
Which of the following are included in the male reproductive system?
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Question 15 of 50
15. Question
Which phenomenon begins with red blood cells releasing oxygen to other cells in the body?
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Question 16 of 50
16. Question
Which of the following body systems is the skeletal system most closely associated with when hematopoiesis happens?
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Question 17 of 50
17. Question
Which of the following is the final structure through which urine must travel to empty out of the body?
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Question 18 of 50
18. Question
Why did it take many years for the cell theory to be developed?
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Question 19 of 50
19. Question
Which term describes complex carbohydrate molecules consisting of numerous monosaccharide units?
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Question 20 of 50
20. Question
Which of the following organelles is not separated from the cytoplasm due to the presence of its own membrane?
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Question 21 of 50
21. Question
Which of the following is a primary use of microscopy in healthcare?
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Question 22 of 50
22. Question
In a DNA double helix, adenine is a nucleotide base that pairs with which of the following?.
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Question 23 of 50
23. Question
A patient’s medication prescription is for 75 mg of a drug. If the tablets come in 25-mg doses, which of the following indicates how many tablets should the patient take?
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Question 24 of 50
24. Question
Which of the following is the primary advantage of using a light microscope?
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Question 25 of 50
25. Question
Which of the following ions from a base react with hydrogen ions in a neutralization reaction?
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Question 26 of 50
26. Question
Which of the following is classified as a type of acid-base reaction that produces a salt?
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Question 27 of 50
27. Question
Which of the following methods helps to eliminate bias in an experiment?
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Question 28 of 50
28. Question
Which of the following types of bond forms between nitrogen and oxygen, and why?
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Question 29 of 50
29. Question
Which of the following atoms is a cation?
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Question 30 of 50
30. Question
A spoonful of sugar is added to a hot cup of tea. All the sugar dissolves. Which of the following describes the resulting solution?
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Question 31 of 50
31. Question
In the following single-replacement reaction, ______ replaces ______.
Cl₂ + 2NaI → 2NaCl + I₂
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Question 32 of 50
32. Question
What type of reaction is described by the following equation?
ZnBr₂(aq) + 2KOH(aq) → Zn(OH)₂(s) + 2KBr(aq)
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In this reaction, two elements are trading places. In the reactants, zinc and bromide ions are together, and potassium and hydroxide ions are together. In the products, zinc and hydroxide ions are together, and potassium and bromide ions are together.
Synthesis reactions involve two or more reactants (A and B) combining to form one product (AB). In the example provided, hydrogen (H2) and oxygen (O2) begin as separate elements. At the end of the reaction, the hydrogen and oxygen atoms are bonded in a molecule of water (H2O).
Decomposition reactions have only one reactant (AB) that breaks apart into two or more products (A and B). In the example above, hydrogen peroxide (H2O2) breaks apart into two smaller molecules: water (H2O) and oxygen (O2).
Single-replacement reactions involve two reactants, one compound (AB) and one element (C). In this type of reaction, one element replaces another to form a new compound (AC), leaving one element by itself (B). In the example, zinc replaces hydrogen in hydrochloric acid (HCl). As a result, zinc forms a compound with chlorine, zinc chloride (ZnCl2), and hydrogen (H2) is left by itself.
Double-replacement reactions involve two reactants, both of which are compounds made of two components (AB and CD). In the example, silver nitrate, composed of silver (Ag1+) and nitrate (NO31-) ions, reacts with sodium chloride, composed of sodium (Na1+) and chloride (Cl1-) ions. The nitrate and chloride ions switch places to produce two compounds that are different from those in the reactants.
Combustion reactions occur when fuels burn, and they involve specific reactants and products, as seen in the examples below. Some form of fuel that contains carbon and hydrogen is required. Examples of such fuels are methane, propane in a gas grill, butane in a lighter, and octane in gasoline. Notice that these fuels all react with oxygen, which is necessary for anything to burn. In all combustion reactions, carbon dioxide, water, and energy are produced. When something burns, energy is released, which can be felt as heat and seen as light.
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Question 33 of 50
33. Question
During which of the following phase changes will the cohesion between the particles in a substance decrease?
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Question 34 of 50
34. Question
A patient’s blood pressure is 140 millimeters of mercury (mmHg). Convert this pressure to kilopascals (kPa), given that 1 mmHg is approximately 0.133 kPa.
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Question 35 of 50
35. Question
In which of the following states of matter are the intermolecular forces between particles in a substance the strongest?
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Question 36 of 50
36. Question
Mendel discovered the pattern associated with which of the following after developing a series of rules in genetics.
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Question 37 of 50
37. Question
The sequence of amino acids in a gene determines which of the following?
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Question 38 of 50
38. Question
Which of the following is true regarding the Urinary system? (Select all that apply.)
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Question 39 of 50
39. Question
During the aging process, not all hormone levels decrease; some actually increase. Which of the following is a hormone that may increase as a person ages?
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Question 40 of 50
40. Question
A science student needs to measure 50 milliliters of water for an experiment. Which of the following measuring instruments should the student use?
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Question 41 of 50
41. Question
Which of the following phases is the cell cycle part of?
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Question 42 of 50
42. Question
In which of the following states of matter do the particles of iron have the lowest amount of cohesion?
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Question 43 of 50
43. Question
A person is diagnosed as having acidosis, a condition in which the blood pH is below 7.45. Which of the following does the doctor most likely conclude?
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Question 44 of 50
44. Question
Which of the following types of RNA acts as an interpreter molecule?
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Question 45 of 50
45. Question
The point where the small and large intestine meet is which of the following?
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Question 46 of 50
46. Question
Which of the following processes involves the addition of water molecules to break down covalent bonds within macromolecules?
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Question 47 of 50
47. Question
Which of the following liquids typically forms a convex meniscus when placed in a container?
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Question 48 of 50
48. Question
Which of the following strategies can help reduce observer bias in an experiment?
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Question 49 of 50
49. Question
Which of the following best describes the primary reproductive mechanism of bacterial cells?
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Question 50 of 50
50. Question
Which of the following best describes the primary function of phospholipids in cell membranes?
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