Nursing Elites

1. The sebaceous glands are part of which system?

• A. Endocrine system
• B. Digestive system
• C. Respiratory system
• D. Integumentary system

Correct answer: D

Rationale: The sebaceous glands are a component of the integumentary system, which includes the skin, hair, nails, and associated structures. Sebaceous glands are typically found throughout the skin and are responsible for producing an oily substance called sebum, which helps keep the skin and hair lubricated and moisturized. The endocrine system (Choice A) consists of glands that produce hormones, the digestive system (Choice B) is responsible for processing food, and the respiratory system (Choice C) is involved in breathing and gas exchange.

2. What is the molarity of a solution containing 45 moles of NaCl in 4 liters?

• A. 0.11 M NaCl
• B. 0.45 M NaCl
• C. 1.8 M NaCl
• D. 8.9 M NaCl

Correct answer: A

Rationale: To calculate the molarity of a solution, you use the formula: Molarity (M) = moles of solute / liters of solution. In this case, M = 45 moles / 4 L = 11.25 M. The correct answer is 0.11 M NaCl. Choice B is incorrect as it doesn't match the calculated value. Choice C is also incorrect as it is significantly higher than the correct molarity. Choice D is incorrect as it is excessively high compared to the calculated value.

3. Which substance would be most affected by a change in temperature?

• A. Liquid nitrogen
• B. Salt crystals
• C. Hydrogen gas
• D. Iron filings

Correct answer: C

Rationale: Hydrogen gas would be most affected by a change in temperature because gases have a greater expansion or contraction in volume with changes in temperature compared to liquids or solids. When the temperature of hydrogen gas increases, its molecules gain kinetic energy and move faster, causing the gas to expand and its volume to increase. Conversely, when the temperature decreases, the gas molecules lose kinetic energy and move slower, leading to a decrease in volume. This property makes hydrogen gas highly sensitive to temperature changes compared to liquid nitrogen, salt crystals, or iron filings. Liquid nitrogen, salt crystals, and iron filings are less affected by temperature changes because their particles are closer together and have lower kinetic energy, resulting in minimal volume changes with temperature fluctuations.

4. What is another word for deluge?

• A. Earthquake
• B. Dimness
• C. Downpour
• D. Chasm

Correct answer: C

Rationale: A "deluge" is a sudden and heavy rainfall or flood, so the word that is most closely related in meaning to "deluge" is "downpour," which also refers to a heavy and sustained rainfall. The other choices, "earthquake," "dimness," and "chasm," do not relate to a flooding or heavy rainfall situation.

5. What is the meaning of Hygiene?

• A. General cleanliness and good health practices
• B. Measures contributing to cleanliness and good health
• C. A measure of dietary health
• D. A type of infection

Correct answer: B

Rationale: The correct answer is B: 'Measures contributing to cleanliness and good health.' Hygiene encompasses practices that promote cleanliness and overall good health, such as washing hands, maintaining personal hygiene, and keeping the surroundings clean. Choice A has been revised to 'General cleanliness and good health practices' to better reflect the concept of hygiene. Hygiene goes beyond just cleanliness to include specific measures for maintaining health. Choice C is incorrect as hygiene is not specifically related to dietary health; it is more about cleanliness and health practices. Choice D is incorrect as hygiene is not a type of infection; it is about preventing infections through proper practices.

Similar Questions