Nursing Elites

1. What is the meaning of the word 'enlist' as it is used in the second paragraph?

• A. call into service
• B. write down
• C. send away
• D. put across

Correct answer: A

Rationale: In the context of the immune system, 'enlist' means to call into service. Immune cells recruit other cells to fight infection by producing chemicals that regulate their growth, behavior, and direct new recruits to trouble spots. This process is essential for the immune system's defense mechanism. The other choices are incorrect: 'write down' and 'put across' do not capture the action of mobilizing immune cells, and 'send away' is opposite in meaning to what is happening in the immune response.

2. Which substance is a product of photosynthesis?

• A. Carbon dioxide
• B. Oxygen
• C. Water
• D. Glucose

Correct answer: D

Rationale: During photosynthesis, plants and other organisms convert carbon dioxide and water into glucose and oxygen. Glucose is a carbohydrate produced by plants as a result of photosynthesis, serving as their main source of energy. Oxygen is released as a byproduct of this process, while carbon dioxide and water are the raw materials used to produce glucose. Therefore, the correct answer is 'Glucose,' making it a vital product of the photosynthesis process. Choices A, B, and C are incorrect as carbon dioxide and water are the reactants needed for photosynthesis, and oxygen is released as a byproduct.

3. Contact dermatitis occurs through the sense of ___________.

• A. smell
• B. taste
• C. touch
• D. sight

Correct answer: C

Rationale: Contact dermatitis occurs through the sense of touch when the skin comes into direct contact with irritants or allergens, leading to an inflammatory reaction. This condition is commonly caused by the skin being in contact with items like certain chemicals, fabrics, plants, or metals, resulting in redness, itching, and sometimes blisters. The other choices (smell, taste, sight) do not relate to the cause of contact dermatitis, which specifically involves the skin's direct contact with irritants or allergens.

4. A tuberculin skin test should be read within 24 hours of administration.

• A. of
• B. before
• C. after
• D. during

Correct answer: A

Rationale: The correct preposition to use after 'within 24 hours' in this context is 'of.' Therefore, the tuberculin skin test should be read within 24 hours of administration. The other choices ('before,' 'after,' 'during') do not correctly convey the relationship between the timing of reading the test and the administration.

5. What is the sum of 3/7, 4/7, and 2/7?

• A. 7/7
• B. 9/7
• C. 6/7
• D. 7/7

Correct answer: B

Rationale: To find the sum of fractions with the same denominator, add the numerators. Here, 3/7 + 4/7 + 2/7 = (3 + 4 + 2)/7 = 9/7. Therefore, the correct answer is 9/7. Choice A (7/7) is incorrect as the sum is not 7/7. Choice C (6/7) is incorrect as the sum is not 6/7. Choice D (7/7) is incorrect as the sum is not 7/7.

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