Nursing Elites

1. What is the approximate composition of blood?

• A. 45% plasma, 55% formed elements
• B. 55% plasma, 45% formed elements
• C. 55% water, 45% blood cells
• D. 45% water, 55% plasma

Correct answer: B

Rationale: Blood is composed of approximately 55% plasma (mostly water with proteins, electrolytes, and nutrients) and 45% formed elements (red blood cells, white blood cells, and platelets). Choice B is the correct answer. Choice A is incorrect as it reverses the percentages. Choice C is incorrect because it incorrectly states that blood cells make up 45% of blood, while they are part of the formed elements along with platelets. Choice D is incorrect as it suggests that water makes up 45% of blood, which is not accurate.

2. When selecting a color palette for a presentation, what is the best approach?

• A. Utilize as many vibrant colors as possible to grab attention.
• B. Stick to a monochrome palette for a minimalist look.
• C. Select complementary colors that create harmony and contrast.
• D. Use the same colors as your company logo for consistency.

Correct answer: C

Rationale: When selecting a color palette for a presentation, the best approach is to choose complementary colors that create harmony and contrast. This selection ensures that the colors work well together, enhancing visual interest and clarity in your presentation slides. Complementary colors help in making your slides more appealing and engaging for the audience, as they provide a balanced and visually pleasing combination. Option A, utilizing as many vibrant colors as possible, can lead to a cluttered and distracting presentation. Option B, sticking to a monochrome palette, may lack the visual interest needed in a presentation. Option D, using the same colors as your company logo, may not always provide the necessary variety and contrast required for an effective presentation.

3. Convert 0.075 mg to micrograms.

• A. 75 mcg
• B. 7.5 mcg
• C. 0.75 mcg
• D. 750 mcg

Correct answer: D

Rationale: To convert milligrams to micrograms, you need to multiply by 1000, not 10000. Therefore, to convert 0.075 mg to mcg, you multiply 0.075 by 1000, giving you 75 mcg. The correct answer is not provided in the choices, and the correct conversion is 75 mcg, which is not listed as an option. Choices A, B, and C are incorrect because they do not reflect the correct conversion factor. Choice D, 750 mcg, is a common mistake made by incorrectly adding a zero. It is important to remember that the conversion from milligrams to micrograms involves multiplying by 1000, not adding extra zeros.

4. Which of the following choices best describes the location of the trachea in relation to the esophagus?

• A. Lateral
• B. Anterior
• C. Posterior
• D. Dorsal

Correct answer: B

Rationale: The trachea is situated in front of the esophagus, making it anterior to the esophagus. This anatomical relationship is crucial to understand in clinical practice, particularly regarding airway management and esophageal intubation. Therefore, the correct answer is B: 'Anterior.' Choices A, C, and D are incorrect because the trachea is not located to the side (lateral), behind (posterior), or on the back (dorsal) of the esophagus.

5. Bi, re, and un are:

• A. Suffixes, appearing at the beginning of base words to change their meaning
• B. Suffixes, appearing at the end of base words to enhance their meaning
• C. Prefixes, appearing at the beginning of base words to emphasize their meaning
• D. Prefixes, appearing at the beginning of base words to change their meaning

Correct answer: D

Rationale: Bi, re, and un are prefixes, not suffixes. Prefixes are added at the beginning of base words to change their meanings. Therefore, choices A, B, and C are incorrect because they refer to suffixes or emphasize, which is not the case for these prefixes.

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