ATI TEAS 7
Chemistry
1. Which of the following is a characteristic of a solution with a high viscosity?
- A. It flows easily
- B. It has a low resistance to flow
- C. It has a high resistance to flow
- D. It does not mix with other liquids
Correct answer: c
Rationale: Solutions with high viscosity have a high resistance to flow. The other choices do not accurately describe high viscosity.
2. Which vitamin is crucial for calcium absorption and synthesized in the skin upon sun exposure?
- A. Vitamin A
- B. Vitamin C
- C. Vitamin D
- D. Vitamin E
Correct answer: C
Rationale: The correct answer is C: Vitamin D. Vitamin D is crucial for calcium absorption as it helps the body absorb calcium from the diet. When the skin is exposed to sunlight, it produces vitamin D. This is why sunlight is often referred to as the 'sunshine vitamin.' Vitamin A (choice A) is important for vision and immune function, but not specifically for calcium absorption. Vitamin C (choice B) is essential for collagen production and immune function, but not directly related to calcium absorption. Vitamin E (choice D) is an antioxidant that helps protect cells from damage, but it is not primarily involved in calcium absorption like vitamin D.
3. What type of error occurs in the sentence "Everyone knew who the culprit was, except for me"?
- A. Subject-verb agreement
- B. Misplaced modifier
- C. Dangling participle
- D. Pronoun-antecedent agreement
Correct answer: B
Rationale: The phrase "except for me" modifies "everyone," but it is misplaced after the verb "knew," causing confusion.
4. A nurse needs to dilute 2 milliliters of a concentrated medication with 8 milliliters of sterile water. What is the final concentration of the solution in percent?
- A. 16.67%
- B. 20%
- C. 25%
- D. 50%
Correct answer: B
Rationale: Calculate the total volume of the solution (2 ml + 8 ml = 10 ml). Then, divide the volume of the concentrated medication by the total volume and multiply by 100%: (2 ml / 10 ml) * 100% = 20%.
5. What is a lifestyle practice that can weaken the immune system?
- A. Getting enough sleep
- B. Eating a balanced diet rich in fruits and vegetables
- C. Managing stress levels
- D. Frequent smoking
Correct answer: D
Rationale: Frequent smoking is a lifestyle practice that can weaken the immune system. Smoking has been linked to various health issues, including suppressing the immune system's ability to fight off infections and diseases. The chemicals in tobacco smoke can impair immune function, making smokers more susceptible to illnesses. On the other hand, getting enough sleep, eating a balanced diet rich in fruits and vegetables, and managing stress levels are practices that support a healthy immune system, rather than weaken it.
6. Which additional information would be MOST relevant to the passage's argument?
- A. A detailed biography of a historical figure with no analysis of their impact on society.
- B. A timeline of technological advancements throughout history with no connection to social consequences.
- C. A case study of how historical knowledge informed the development of a successful solution to a contemporary problem.
- D. A statistical analysis of economic trends without any reference to historical events or context.
Correct answer: C
Rationale: Choice C aligns with the passage's theme by demonstrating how historical knowledge directly impacted a contemporary solution, further supporting the argument for history's value.
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