ATI TEAS 7
Physics
1. The resolution of an optical instrument, like a microscope, refers to its ability to distinguish between:
- A. Different colors of light
- B. The presence or absence of light
- C. Variations in intensity
- D. Very close, nearly identical objects
Correct answer: D
Rationale: The resolution of an optical instrument, such as a microscope, is its ability to distinguish between very close, nearly identical objects. This means that the instrument can differentiate between two points that are close together and appear almost as one. A higher resolution allows for clearer and sharper images by minimizing the blurring effect that occurs when objects are close together. Options A, B, and C do not directly relate to the concept of resolution in optical instruments. Therefore, option D is the correct answer as it best describes what resolution entails in this context.
2. Ms. Valencia develops the standards to be followed. Among the following standards, which is
- A. The patients verbalized satisfaction of the nursing care received
- B. Rotation of duty will be done every four weeks for all patient care personnel.
- C. All patients shall have their weights taken recorded
- D. Patients shall answer the evaluation form before discharge
Correct answer: C
Rationale: The correct answer is C because it is a clear and specific standard that can be easily measured and monitored. Weight recording is a fundamental aspect of patient care and is essential for tracking changes in health status. Verbalized satisfaction (option A) is subjective and may not be consistently measurable. Rotation of duty (option B) is important but may not be a standard developed by a nurse manager. Answering an evaluation form before discharge (option D) is important but may not be a standard created by Ms. Valencia for all patients.
3. Bile, a yellowish-green fluid, is stored in the gallbladder and released into the small intestine during digestion. What is the primary function of bile in digestion?
- A. Break down carbohydrates
- B. Break down proteins
- C. Emulsify fats
- D. Neutralize stomach acid
Correct answer: C
Rationale: The primary function of bile in digestion is to emulsify fats. Bile contains bile salts that help break down large fat globules into smaller droplets, which increases the surface area for enzymes to work on and aids in the absorption of fats in the small intestine. This process is essential for the digestion and absorption of dietary fats. Bile does not directly break down carbohydrates or proteins, and it is not involved in neutralizing stomach acid, making option C the correct answer.
4. What is the term for a solution that has a lower concentration of solute compared to another solution?
- A. Saturated solution
- B. Unsaturated solution
- C. Dilute solution
- D. Concentrated solution
Correct answer: C
Rationale: A dilute solution has a lower concentration of solute compared to another solution. The other choices do not accurately describe a dilute solution.
5. What is the coefficient of oxygen in the balanced chemical equation for the combustion of methane (CH4)?
- A. 1
- B. 2
- C. 3
- D. 4
Correct answer: b
Rationale: The balanced equation is CH4 + 2O2 → CO2 + 2H2O, so the coefficient of oxygen is 2.
6. Which element is used in semiconductors like computer chips and solar panels?
- A. Germanium
- B. Silicon
- C. Gallium
- D. Arsenic
Correct answer: B
Rationale: Silicon's unique properties allow it to be manipulated to conduct or not conduct electricity, making it ideal for various electronic applications.
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