Nursing Elites

1. What is the term for the phenomenon when two waves combine to form a new wave?

• A. Diffraction
• B. Interference
• C. Refraction
• D. Dispersion

Correct answer: b

Rationale: Interference occurs when two waves meet and their amplitudes combine, resulting in a new wave.

2. The speaker's enthusiasm was contagious. Which word is the noun form of the adjective "enthusiastic"?

• A. enthusiastic
• B. enthusiastically
• C. enthusiasm
• D. enthuse

Correct answer: C

Rationale: Nouns can be formed from adjectives using various suffixes.

3. What is the principle behind the phenomenon of refraction, where waves bend when entering a new medium?

• A. Change in wavelength
• B. Change in frequency
• C. Change in wave speed
• D. None of the above

Correct answer: C

Rationale: Refraction occurs because of the change in wave speed as it enters a new medium, causing the wavefront to bend and change direction.

4. Which of the following is NOT a characteristic of living organisms?

• A. Made up of cells
• B. Able to reproduce
• C. Require energy
• D. Non-motile

Correct answer: D

Rationale: Rationale: A) Made up of cells: All living organisms are composed of one or more cells. This is a fundamental characteristic of life as defined by cell theory. B) Able to reproduce: One of the key characteristics of living organisms is their ability to reproduce and pass on genetic information to offspring. C) Require energy: Living organisms require energy to carry out various life processes such as growth, reproduction, and maintenance of homeostasis. This energy is obtained through processes like metabolism. D) Non-motile: While some living organisms may be non-motile (unable to move on their own), movement is a common characteristic of many living organisms. Motility allows organisms to respond to their environment, find food, escape predators, and carry out other essential activities.

5. Which of the following is NOT a function of the muscular system?

• A. Movement
• B. Maintaining posture
• C. Generating heat
• D. Regulating blood sugar levels

Correct answer: D

Rationale: The correct answer is D: "Regulating blood sugar levels." The muscular system primarily functions in movement, maintaining posture, and generating heat. Muscles contract and relax to allow movement and help us stay upright. They also produce heat through muscle contractions to maintain body temperature. Regulating blood sugar levels is primarily controlled by the endocrine system, specifically the pancreas and hormones like insulin and glucagon. Therefore, this function is not directly related to the muscular system.

6. Which of the following is the main function of the heart?

• A. To filter blood
• B. To exchange gases
• C. To pump blood throughout the body
• D. To produce hormones

Correct answer: C

Rationale: Rationale: The main function of the heart is to pump blood throughout the body. The heart is a muscular organ that works as a pump to circulate blood, which carries oxygen and nutrients to the body's tissues and removes waste products. Option A is incorrect because the kidneys are responsible for filtering blood. Option B is incorrect because the exchange of gases, such as oxygen and carbon dioxide, occurs in the lungs. Option D is incorrect because hormone production is primarily carried out by endocrine glands such as the pituitary gland and the thyroid gland.

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