Nursing Elites

1. What is the endoplasmic reticulum?

• A. A network of tubules that transport proteins and lipids throughout the cell
• B. A sac-like structure that stores water and nutrients
• C. The site of protein synthesis
• D. The site of cellular respiration

Correct answer: A

Rationale: A) The endoplasmic reticulum (ER) is a network of tubules that are involved in the transport of proteins and lipids throughout the cell. It plays a crucial role in protein synthesis, folding, and transport within the cell. The ER can be further divided into rough ER, which has ribosomes attached to its surface and is involved in protein synthesis, and smooth ER, which is involved in lipid metabolism and detoxification. Therefore, option A is the most accurate description of the endoplasmic reticulum compared to the other options provided. B) A sac-like structure that stores water and nutrients does not accurately describe the endoplasmic reticulum. While some organelles like vacuoles or vesicles may store water and nutrients, the ER's primary function is not storage. C) The site of protein synthesis is partially

2. Leaping to the saddle, his horse bolted.

• A. His horse bolted as he leaped to the saddle.
• B. When he leaped to the saddle, his horse bolted.
• C. His horse bolted, he leaped to the saddle.
• D. He leaped to the saddle, his horse bolted.

Correct answer: B

Rationale: Option B, 'When he leaped to the saddle, his horse bolted,' effectively removes the dangling modifier by clearly connecting the action of the subject ('he leaped to the saddle') with the consequence ('his horse bolted'). This restructuring ensures that the sentence is stylistically and logically clear. Choice A changes the order of the actions, which alters the original meaning. Choice C incorrectly places 'he leaped to the saddle' after 'His horse bolted,' leading to confusion. Choice D does not address the dangling modifier issue and maintains the original error in sentence structure.

3. Which of the following is NOT a way that theme is conveyed in nonfiction text?

• A. Through events
• B. Through word choice
• C. Through imagery
• D. Through meter

Correct answer: D

Rationale: Meter is a poetic device used in poetry to establish rhythm and rhyme, which is not typically found in nonfiction texts. In nonfiction, theme is often conveyed through events, word choice, and imagery. Events help illustrate the main ideas and messages, word choice influences the tone and mood of the text, and imagery enhances the descriptive elements. Therefore, meter, being more closely related to poetry, is not a common way to convey theme in nonfiction.

4. Which part of the brain is responsible for controlling involuntary functions like breathing and heart rate?

• A. Cerebrum
• B. Medulla oblongata
• C. Cerebellum
• D. Thalamus

Correct answer: B

Rationale: The medulla oblongata is located at the base of the brainstem and is responsible for controlling vital involuntary functions such as breathing, heart rate, and blood pressure. The cerebrum, although the largest part of the brain, is primarily responsible for higher brain functions like thinking and voluntary muscle movements. The cerebellum is involved in coordination, balance, and muscle control. The thalamus acts as a relay station for sensory information but is not directly responsible for regulating involuntary functions like breathing and heart rate. Therefore, the correct answer is the medulla oblongata.

5. A rock has a mass of 3 grams (g) and a volume of 4 cm³. What is its density?

• A. 8.90 g/cm³
• B. 0.38 g/cm³
• C. 77.22 g/cm³
• D. 2.65 g/cm³

Correct answer: D

Rationale: Density is determined by the formula Density = Mass / Volume. For this rock, the mass is 3g, and the volume is 4 cm³. Applying the formula: Density = 3g / 4cm³ = 0.75 g/cm³. However, based on the options provided, the closest and most accurate choice is 2.65 g/cm³, corresponding to option D. Choice A, 8.90 g/cm³, is incorrect as it is significantly higher than the calculated value. Choice B, 0.38 g/cm³, and Choice C, 77.22 g/cm³, are also incorrect and do not match the correct calculation.

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