ATI TEAS 7
Chemistry
1. What is the term for the chemical reaction that involves the loss of electrons?
- A. Reduction
- B. Oxidation
- C. Neutralization
- D. Precipitation
Correct answer: b
Rationale: Oxidation is the chemical reaction that involves the loss of electrons. The other choices describe different types of reactions.
2. What is the scientific name for the tear gland?
- A. Lachrymal gland
- B. Lacrimal sac
- C. Lacrimal duct
- D. Lacrimal papilla
Correct answer: A
Rationale: The lachrymal gland is the almond-shaped gland located above each eye, responsible for producing tears. Tears are a complex mixture of water, electrolytes, proteins, and other substances that help lubricate and protect the eyes from dryness and irritation.
3. The lymphatic system is primarily responsible for:
- A. Transporting nutrients throughout the body
- B. Removing excess fluids and waste products from tissues
- C. Producing red blood cells
- D. Regulating body temperature
Correct answer: B
Rationale: The correct answer is B: 'Removing excess fluids and waste products from tissues.' The lymphatic system plays a crucial role in maintaining fluid balance in the body by collecting excess interstitial fluid and returning it to the bloodstream. This system also helps in removing waste products, pathogens, and toxins from tissues, contributing to the body's immune response. Options A, C, and D are incorrect because transporting nutrients, producing red blood cells, and regulating body temperature are primarily the functions of other systems in the body such as the circulatory system, bone marrow, and the thermoregulatory system, respectively.
4. What is the acceleration of an object moving at a constant speed of 20 m/s if it comes to a complete stop within 5 seconds?
- A. 0 m/s² (no acceleration)
- B. 4 m/s²
- C. -4 m/s²
- D. Information insufficient
Correct answer: C
Rationale: The acceleration can be calculated using the formula: acceleration = (final velocity - initial velocity) / time. In this case, the final velocity is 0 m/s (as the object comes to a complete stop), the initial velocity is 20 m/s, and the time taken is 5 seconds. Plugging these values into the formula, we get acceleration = (0 m/s - 20 m/s) / 5 s = -20 m/s / 5 s = -4 m/s². Therefore, the acceleration is -4 m/s².
5. What is the meaning of the phrase "to be on the same page"?
- A. To be physically close
- B. To agree or understand each other
- C. To be sharing the same goal
- D. To be facing the same direction
Correct answer: B
Rationale: The phrase means to be in agreement or share the same understanding.
6. Identify the participial phrase in the following sentence: "Running through the park, she spotted a squirrel."
- A. Running
- B. through the park
- C. she spotted
- D. a squirrel
Correct answer: B
Rationale: A participial phrase acts as an adjective but is formed from a verb.
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