Nursing Elites

1. Reproduction is the change in body characteristics over time.

• A. TRUE
• B. FALSE
• C. Not Sure
• D. None of the above

Correct answer: B

Rationale: Reproduction is the process by which living organisms produce offspring of the same kind. It is not related to changes in body characteristics over time. Therefore, the statement is false. Choices C and D are also incorrect as they do not align with the definition of reproduction.

2. Which of the following types of cells is primarily responsible for the destruction of old cells and invasive micro-organisms?

• A. Basophils
• B. Eosinophils
• C. B-cells
• D. Macrophages

Correct answer: D

Rationale: Macrophages are a type of white blood cell that plays a crucial role in the immune system by engulfing and digesting cellular debris, foreign substances, microbes, cancer cells, and old or damaged cells. Basophils are primarily involved in allergic reactions and parasitic infections, eosinophils combat multicellular parasites and have a role in allergic reactions, and B-cells are responsible for producing antibodies. Therefore, the correct answer is macrophages as they are specialized in phagocytosis and removal of unwanted cells and microorganisms.

3. Which of the following structures, located at the end of the ear canal, vibrates when sound waves strike it?

• A. Acoustic meatus
• B. Cochlea
• C. Eustachian tube
• D. Tympanic membrane

Correct answer: D

Rationale: The correct answer is the Tympanic membrane. The tympanic membrane, also known as the eardrum, is located at the end of the ear canal and vibrates when sound waves strike it. This vibration is then transmitted to the ossicles in the middle ear, which amplify and transmit the sound to the inner ear. Choice A, the Acoustic meatus, is incorrect as it is the ear canal itself, not the structure that vibrates. Choice B, the Cochlea, is responsible for translating sound vibrations into electrical signals but is not located at the end of the ear canal. Choice C, the Eustachian tube, is responsible for equalizing pressure between the middle ear and the atmosphere and is not involved in vibration from sound waves.

4. Positive feedback mechanisms usually result in

• A. changes returning values away from a set point.
• B. stable conditions around a set point.
• C. unstable conditions.
• D. long-term changes.

Correct answer: C

Rationale: Positive feedback mechanisms usually result in unstable conditions. In a positive feedback loop, the output enhances or amplifies the changes that are occurring, leading to a deviation from the initial set point. Therefore, positive feedback does not bring values back towards the set point (Choice A). Choice B is incorrect because positive feedback does not promote stability around a set point. Choice D is also incorrect as positive feedback mechanisms typically do not lead to long-term changes; instead, they intensify the initial change, causing instability.

5. Do patterns of growth in preserved bones and tooth decay reflect the health of the people they were a part of?

• A. Yes
• B. No
• C. Not enough information to determine
• D. Not applicable

Correct answer: A

Rationale: Patterns of growth in preserved bones and tooth decay can indeed reflect the health of the individuals they belonged to. Growth patterns can indicate malnutrition or diseases during childhood, while tooth decay can signify dietary habits and overall health. Therefore, the correct answer is 'Yes.' 'No' is incorrect because these factors can provide valuable information about the health of individuals. 'Not enough information to determine' is incorrect as these indicators are commonly used in anthropological and archaeological studies to understand health conditions in past populations. 'Not applicable' is also incorrect as the information from bones and tooth decay is relevant to assessing the health of individuals.

Similar Questions