Nursing Elites

1. What are chromosomes made of?

• A. DNA and RNA
• B. DNA and proteins
• C. Proteins and carbohydrates
• D. DNA only

Correct answer: B

Rationale: Rationale: Chromosomes are structures found in the nucleus of cells that contain genetic material. They are made up of DNA (deoxyribonucleic acid), which carries the genetic information, and proteins that help in the organization and packaging of the DNA. While RNA is involved in various cellular processes, it is not a major component of chromosomes. Carbohydrates are not a significant component of chromosomes. Therefore, the most accurate answer is B) DNA and proteins.

2. A book slides across a table. What determines the magnitude of the frictional force acting on the book?

• A. Only the mass of the book
• B. Only the normal force from the table
• C. Both the mass of the book and the normal force from the table
• D. Neither the mass of the book nor the normal force from the table

Correct answer: C

Rationale: Both the mass of the book and the normal force from the table. Friction is proportional to both the normal force and the coefficient of friction, which depends on the materials in contact. Since the normal force depends on the weight of the object (mass x gravity), both factors are important.

3. Based on the passage, the author's attitude towards online learning is likely to be

• A. Skeptical and critical, focusing solely on its limitations and negative impacts.
• B. Enthusiastic and optimistic, overlooking any potential issues and promoting its universal adoption.
• C. Cautiously pragmatic, recognizing its valuable potential while advocating for addressing its downsides.
• D. Indifferent and neutral, lacking any strong opinion on its role in education.

Correct answer: C

Rationale: The emphasis on both benefits and challenges suggests a balanced and pragmatic perspective, aligning with C.

4. Which additional information would be MOST relevant to the topic of the passage?

• A. A detailed history of the development of specific social media platforms.
• B. Studies on the psychological effects of prolonged social media use on teenagers.
• C. Statistics on the global economic impact of the social media industry.
• D. Technical explanations of the algorithms used by social media platforms.

Correct answer: B

Rationale: Studies on the psychological effects of social media use directly relate to the passage's concerns about mental health impacts, making it the most relevant information.

5. The stratified cuboidal epithelium lining the salivary glands is responsible for:

• A. Protection
• B. Gas exchange
• C. Secretion
• D. Absorption

Correct answer: C

Rationale: The correct answer is C: Secretion. The stratified cuboidal epithelium lining the salivary glands is specifically designed for the secretion of saliva, which plays a crucial role in the initial digestion of food. This type of epithelium has multiple layers of cells that provide protection and support for the glandular tissue underneath, allowing for the production and release of saliva. Options A, B, and D are incorrect as they do not accurately reflect the primary function of this particular epithelium. Therefore, the correct choice is C, secretion.

6. How does the stability of an atom's nucleus influence its radioactive decay?

• A. Stable nuclei never undergo radioactive decay.
• B. Unstable nuclei are more likely to decay through various processes.
• C. Decay releases energy, making stable nuclei more prone to it.
• D. The element's position on the periodic table determines its decay rate.

Correct answer: B

Rationale: Unstable nuclei are more likely to decay through various processes. The stability of an atom's nucleus is a key factor in determining whether it will undergo radioactive decay. Unstable nuclei have an excess of either protons or neutrons, leading to an imbalance in the nucleus. To achieve a more stable configuration, these nuclei will undergo radioactive decay by emitting particles or energy. Stable nuclei, on the other hand, are less likely to undergo radioactive decay as they have a balanced number of protons and neutrons.

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