Nursing Elites

1. During which of the following stages does crossing over occur?

• A. Mitosis Prophase
• B. Meiosis Prophase I
• C. Meiosis Prophase II
• D. Interphase

Correct answer: B

Rationale: Crossing over occurs during Prophase I of meiosis. This stage is specifically associated with genetic recombination, where homologous chromosomes exchange genetic material. This process contributes to genetic diversity by creating new combinations of alleles. Choices A, C, and D are incorrect. In mitosis, crossing over does not occur as it involves the separation of replicated chromosomes. Meiosis Prophase II is focused on the reformation of nuclei and does not involve crossing over. Interphase is a stage where the cell prepares for division and is not associated with crossing over.

2. What are the fluid-filled sacs that cushion the brain within the skull called?

• A. Meninges
• B. Cerebrospinal fluid
• C. Dura mater
• D. Arachnoid mater

Correct answer: B

Rationale: The correct answer is B, cerebrospinal fluid. Cerebrospinal fluid acts as a shock absorber, protecting the brain from impact and providing nutrients to brain cells. Meninges are the three protective layers of tissue that surround the brain and spinal cord. Dura mater and arachnoid mater are specific layers of the meninges, not the fluid-filled sacs that cushion the brain.

3. He also took part in the community police supervision project. He played an instrumental role in the BPP breakfast program for impoverished African American children. Which revision best combines these sentences for clarity and flow?

• A. NO CHANGE
• B. He also took part in the community police supervision project but played an instrumental role
• C. He also took part in the community police supervision project, he played an instrumental role
• D. He also took part in the community police supervision project and played an instrumental role

Correct answer: D

Rationale: The correct answer is 'D' because the phrase 'and played an instrumental role' provides a smoother transition between the two ideas. In this context, using 'and' helps to connect the two activities more effectively. Choice 'B' introduces a contrasting conjunction 'but,' which is not suitable in this context where the actions are related. Choice 'C' incorrectly separates the two actions into distinct sentences, affecting the flow and coherence of the paragraph. Therefore, 'D' is the best choice for combining the sentences for clarity and flow.

4. Which of the following pairs of words includes a suffix that changes the meaning of the second word from the first?

• A. fort; fortification
• B. mount; dismount
• C. flee; fleeing
• D. fame; famous

Correct answer: D

Rationale: The correct answer is D. Adding the suffix '-ous' to 'fame' changes it to an adjective, 'famous,' altering the meaning of the word. Choice A is incorrect because 'fortification' is derived from 'fort' but does not change its meaning significantly. Choice B is incorrect as 'dismount' is related to 'mount' but signifies the opposite action rather than a change in meaning. Choice C is incorrect as 'fleeing' is simply the present participle form of 'flee' and does not alter its fundamental meaning.

5. What is the name of the master gland that regulates the function of many other endocrine glands?

• A. Thyroid gland
• B. Pituitary gland
• C. Hypothalamus
• D. Adrenal gland

Correct answer: B

Rationale: The pituitary gland is commonly referred to as the master gland because it controls the functions of numerous other endocrine glands in the body. It secretes various hormones that are essential for regulating processes like growth, metabolism, reproduction, and stress response. The thyroid gland (Choice A) primarily regulates metabolism and does not oversee other endocrine glands. The hypothalamus (Choice C) plays a role in regulating the pituitary gland but is not the master gland. The adrenal gland (Choice D) produces hormones related to stress response but is not considered the master gland that regulates other endocrine glands.

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