ATI TEAS 7
physics
1. What phenomenon occurs when a wave encounters a change in medium causing a change in its speed and direction?
- A. Refraction
- B. Reflection
- C. Diffraction
- D. Interference
Correct answer: a
Rationale: Refraction happens when a wave changes its speed and direction due to encountering a change in medium.
2. What property of a substance remains constant regardless of changes in its location in the universe?
- A. Mass
- B. Weight
- C. Density
- D. Volume
Correct answer: a
Rationale: Mass is an intrinsic property of matter and remains constant regardless of its location.
3. Stephanie is a new Staff Educator of a private tertiary hospital. She conducts orientation
- A. Organizational structure
- B. Policy
- C. Job description
- D. Manual of procedures
Correct answer: D
Rationale: The correct answer is D, 'Manual of procedures.' During orientation, Stephanie as a Staff Educator would likely refer to the manual of procedures to provide new employees with detailed instructions on how to perform their job duties. This manual outlines the specific procedures, protocols, and guidelines that employees are expected to follow within the organization. It serves as a valuable resource for new hires to understand the standard operating procedures and expectations within the hospital setting, making it a crucial document to reference during orientation.
4. What is the function of the pituitary gland?
- A. Produces hormones that regulate growth and metabolism
- B. Filters blood and removes waste products
- C. Stores and releases bile
- D. Produces red blood cells
Correct answer: A
Rationale: The pituitary gland is often referred to as the "master gland" because it controls the activity of many other endocrine glands in the body. It is located at the base of the brain and produces a variety of hormones that regulate various bodily functions, including growth, metabolism, reproduction, and blood pressure.
5. Which of the following is a characteristic of unsaturated fatty acids?
- A. They are solid at room temperature.
- B. They contain only single bonds.
- C. They have a higher melting point.
- D. They contain double or triple bonds.
Correct answer: D
Rationale: Unsaturated fatty acids contain double or triple bonds in their hydrocarbon chains. The other choices do not accurately describe unsaturated fatty acids.
6. What is the main component that gives bones their rigidity and hardness?
- A. Collagen
- B. Calcium phosphate
- C. Cartilage
- D. Ligaments
Correct answer: B
Rationale: The main component that gives bones their rigidity and hardness is calcium phosphate, which is a mineral compound found in bone tissue. While collagen is a protein that provides flexibility and strength to bones, it is the calcium phosphate that primarily contributes to the hardness and rigidity of bones. Cartilage is a connective tissue that cushions joints and helps with movement, while ligaments are fibrous tissues that connect bones to other bones. Therefore, calcium phosphate is the correct answer as it directly relates to the rigid and hard nature of bones.
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