ATI TEAS 7
physics
1. How is power related to work and time?
- A. Power = Work ÷ Time
- B. Power = Work × Time
- C. Power = Work + Time
- D. Power = Work - Time
Correct answer: a
Rationale: Power is calculated as the amount of work done or energy transferred per unit of time.
2. Which type of waves exhibit both longitudinal and transverse motion?
- A. Electromagnetic waves
- B. Surface waves
- C. Mechanical waves
- D. Sound waves
Correct answer: b
Rationale: Surface waves, like those on water surfaces, exhibit both longitudinal and transverse motion.
3. Which blood vessels carry deoxygenated blood from the body back to the right atrium of the heart?
- A. Arteries
- B. Veins
- C. Capillaries
- D. Venules
Correct answer: B
Rationale: The correct answer is B: Veins. Veins are the blood vessels that carry deoxygenated blood from the body back to the heart. Arteries carry oxygenated blood away from the heart, while capillaries are tiny blood vessels where exchange of gases and nutrients occurs. Venules are small blood vessels that collect blood from capillaries and carry it to veins. Understanding the role of veins in carrying deoxygenated blood is crucial for comprehending the circulatory system and how blood is circulated throughout the body.
4. A car skids on a wet road. What is the main force preventing the car from stopping?
- A. Friction
- B. Gravitational force
- C. Normal force from the road
- D. Air resistance
Correct answer: A
Rationale: Friction opposes the motion of the car, trying to bring it to a stop. However, due to the wet surface, the friction force is not enough to overcome the car's inertia.
5. What transport mechanism uses vesicles to move materials within the cell?
- A. Endocytosis
- B. Active transport
- C. Diffusion
- D. Exocytosis
Correct answer: A
Rationale: The correct answer is A: Endocytosis. Endocytosis is a transport mechanism in which cells take in molecules or particles by engulfing them in a vesicle. This process allows materials to be transported within the cell. Active transport (option B) requires energy to move molecules across the cell membrane against their concentration gradient. Diffusion (option C) is the movement of molecules from an area of high concentration to an area of low concentration. Exocytosis (option D) is the process by which cells release substances from vesicles into the extracellular environment. Therefore, endocytosis is the transport mechanism that uses vesicles to move materials within the cell.
6. Which of the following is NOT a function of the skeletal system?
- A. Support and structure
- B. Production of red blood cells
- C. Storage of minerals like calcium
- D. Insulation of the body
Correct answer: A
Rationale: The correct answer is A. The skeletal system provides support and structure to the body, allowing for movement and protecting internal organs. The production of red blood cells occurs in the bone marrow, which is a function of the skeletal system. Additionally, the skeletal system stores minerals like calcium, which play a crucial role in bone health and overall bodily functions. Insulation of the body is not a primary function of the skeletal system but is rather a function of adipose tissue and the integumentary system. Therefore, option A is the correct answer as it does not align with the functions of the skeletal system.
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