Nursing Elites

1. Which property of a wave remains constant when the wave enters a different medium?

• A. Frequency
• B. Wavelength
• C. Amplitude
• D. Speed

Correct answer: d

Rationale: The speed of a wave remains constant when it enters a different medium, provided the conditions are unchanged.

2. Describe the ethical considerations surrounding the potential use of CRISPR-Cas9 technology in humans.

• A. Concerns about unintended consequences on the genome and potential off-target effects.
• B. Debates on modifying the human germline and potential eugenic implications.
• C. Accessibility and affordability of the technology, ensuring equitable access to benefits.
• D. Risks associated with CRISPR-Cas9 editing germline cells and potential long-term impacts.

Correct answer: B

Rationale: CRISPR-Cas9's ability to precisely edit germline cells raises ethical dilemmas about modifying the human gene pool. This includes concerns about eugenics, unintended consequences, and the long-term impact on future generations.

3. What skin condition is characterized by red, itchy, and inflamed patches?

• A. Eczema
• B. Psoriasis
• C. Melanoma
• D. Keloid

Correct answer: A

Rationale: The correct answer is A: Eczema. Eczema is a common skin condition that is characterized by red, itchy, and inflamed patches on the skin. It is often triggered by environmental factors or allergies and can vary in severity. Psoriasis (option B) is also a skin condition that causes red, scaly patches on the skin, but it is typically thicker and more silver or white in color compared to eczema. Melanoma (option C) is a type of skin cancer that usually presents as a new mole or a changing mole on the skin, rather than red, itchy patches. Keloid (option D) is a raised scar that can result from an overgrowth of scar tissue. Therefore, the most appropriate answer to this question is A: Eczema, based on the description of red, itchy, and inflamed patches.

4. Which hormone, produced by the adrenal glands, helps regulate the body's response to stress, including increasing blood pressure and suppressing the immune system?

• A. Aldosterone
• B. Epinephrine
• C. Cortisol
• D. Insulin

Correct answer: c

Rationale: The correct answer is C: Cortisol. Cortisol is a hormone produced by the adrenal glands that plays a crucial role in the body's response to stress. It helps regulate blood pressure by increasing it to prepare the body for stressors. Additionally, cortisol suppresses the immune system to prioritize the stress response. Aldosterone, while also produced by the adrenal glands, primarily regulates electrolyte balance and blood pressure. Epinephrine, produced by the adrenal medulla, is involved in the fight-or-flight response but does not suppress the immune system like cortisol. Insulin, produced by the pancreas, regulates blood sugar levels and is not directly involved in the stress response. Therefore, Cortisol is the hormone that specifically helps regulate the body's response to stress by increasing blood pressure and suppressing the immune system.

5. What type of force opposes the motion of an object moving through a fluid (liquid or gas)?

• A. Gravitational force
• B. Tension force
• C. Viscous force
• D. Magnetic force

Correct answer: c

Rationale: Viscous force is the resistance experienced by an object moving through a fluid due to internal friction.

6. Which of the following is the basic unit of the nervous system?

• A. Neuron
• B. Nerve
• C. Ganglion
• D. Neuroglia

Correct answer: A

Rationale: Rationale: Neurons are the basic structural and functional units of the nervous system. They are specialized cells that transmit information through electrical and chemical signals. Nerves are bundles of neurons, ganglia are clusters of nerve cell bodies outside the central nervous system, and neuroglia are support cells for neurons. However, neurons are specifically responsible for transmitting and processing information in the nervous system, making them the basic unit of this system.

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