Nursing Elites

1. What is the name of the radioactive isotope commonly used in medical imaging techniques like PET scans?

• A. Uranium-235
• B. Plutonium-239
• C. Potassium-40
• D. Fluorine-18

Correct answer: D

Rationale: Fluorine-18 is the radioactive isotope commonly used in medical imaging techniques like PET scans. It is often used in the form of fluorodeoxyglucose (FDG) to detect areas of increased metabolic activity in the body, such as in cancer cells. Uranium-235 and Plutonium-239 are not typically used in medical imaging, and Potassium-40 is a naturally occurring radioactive isotope found in the human body but is not commonly used in medical imaging techniques.

2. What is the term for the number of moles of solute per liter of solution?

• A. Molarity
• B. Molality
• C. Normality
• D. Concentration

Correct answer: A

Rationale: Molarity is defined as the number of moles of solute per liter of solution. The other choices are different concentration units.

3. What is the term for a solution that contains the maximum amount of solute that can dissolve at a specific temperature and pressure?

• A. Saturated solution
• B. Unsaturated solution
• C. Dilute solution
• D. Concentrated solution

Correct answer: A

Rationale: A saturated solution is one in which the maximum amount of solute has dissolved under specific conditions. The other choices do not accurately describe a saturated solution.

4. The lymphatic system works closely with which other body system to fight infections?

• A. Respiratory system
• B. Digestive system
• C. Immune system
• D. Nervous system

Correct answer: A

Rationale: The correct answer is the Respiratory system. The lymphatic system and the respiratory system work closely together to fight infections. The respiratory system helps to filter out pathogens and other harmful substances from the air we breathe, while the lymphatic system produces and transports white blood cells (lymphocytes) that play a key role in the immune response against infections. This collaboration helps the body to defend against respiratory infections and maintain overall health.

5. A person who carries a pathogen but does not exhibit any symptoms is considered:

• A. Asymptomatic carrier
• B. Opportunistic pathogen
• C. Nosocomial infection
• D. Vector-borne disease

Correct answer: A

Rationale: Rationale: An asymptomatic carrier is a person who carries a pathogen (such as a virus or bacterium) but does not show any symptoms of the infection themselves. Despite not exhibiting symptoms, asymptomatic carriers can still spread the pathogen to others, potentially causing illness in those who come into contact with them. This term specifically refers to individuals who are infected but do not develop symptoms, distinguishing them from symptomatic carriers who do show signs of the infection. Option A is the most appropriate choice in this context as it accurately describes a person who carries a pathogen without displaying symptoms. B) Opportunistic pathogen: This term refers to pathogens that typically do not cause disease in healthy individuals but can become pathogenic in individuals with weakened immune systems. C) Nosocomial infection: This term refers to infections that are acquired in a hospital or healthcare facility. D) Vector-borne disease: This term refers to diseases

6. Look at the following electron configuration: 1s2 2s2 2p6 3s2 3p6. To which group and period does this element belong?

• A. Group 16, Period 3
• B. Group 14, Period 3
• C. Group 18, Period 3
• D. Group 17, Period 2

Correct answer: C

Rationale: ) Group 18, Period 3. Count the total electrons (2 + 2 + 6 + 2 + 6 = 18) and observe the completely filled energy levels. This points to a noble gas in Group 18 (Neon) during Period 3.

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