Nursing Elites

1. An atom has 5 protons, 5 neutrons, and 6 electrons. What is the electric charge of this atom?

• A. Neutral
• B. Positive
• C. Negative
• D. Undetermined

Correct answer: C

Rationale: The correct answer is 'Negative.' An atom becomes negatively charged when it has more electrons than protons. In this case, the atom has 6 electrons and 5 protons, resulting in a net negative charge. Choice A 'Neutral' is incorrect because the atom is not balanced in terms of protons and electrons. Choice B 'Positive' is incorrect because having more electrons than protons results in a negative charge. Choice D 'Undetermined' is incorrect, as the charge can be determined based on the relative number of protons and electrons.

2. What is the main point of dispute between the politicians?

• A. Spending on social welfare programs increases the national debt.
• B. Certain classes of people rely on social welfare programs to meet their basic needs.
• C. Certain classes of people would be irreparably harmed if the country failed to provide a social welfare program.
• D. All of the country's leaders have bootstrapped their way to the top.

Correct answer: B

Rationale: The main point of dispute between the conservative and liberal politicians is about whether certain classes of people rely on social welfare programs to meet their basic needs. The conservative politician believes that no citizens truly need government assistance and that it only makes things easier, while the liberal politician argues that various groups, such as immigrants, single mothers, and the elderly, require a safety net for basic necessities. Choice A is incorrect as it refers to the impact on national debt, which is not the primary point of dispute. Choice C is incorrect as it discusses the consequences of failing to provide social welfare programs, not the main point of disagreement. Choice D is irrelevant as it talks about the backgrounds of the country's leaders, which is not the focus of the dispute between the politicians.

3. Which of the following examples is a sentence fragment?

• A. Believe me.
• B. On the 5:30 train.
• C. You probably know Sally.
• D. That's right.

Correct answer: B

Rationale: The correct answer is B, 'On the 5:30 train.' This is a sentence fragment because it does not contain a subject and a verb. In this case, 'On the 5:30 train' is a prepositional phrase, not a complete sentence. Choices A, C, and D are complete sentences as they have both a subject and a verb, making them grammatically correct and not sentence fragments.

4. What is the difference between isometric and isotonic muscle contractions?

• A. Isometric involves movement, while isotonic does not.
• B. Isotonic involves shortening of muscle, while isometric maintains length.
• C. Isometric uses more energy, while isotonic uses less.
• D. Isotonic involves smooth muscle, while isometric involves skeletal muscle.

Correct answer: B

Rationale: The correct answer is B. Isometric contractions occur when the muscle generates tension without changing its length, while isotonic contractions involve the muscle changing length to move a load. In isotonic contractions, the muscle shortens to move a load, whereas in isometric contractions, the muscle contracts to hold a position without movement. Choice A is incorrect because isometric contractions do not involve movement, while choice C is incorrect as isotonic contractions typically require more energy due to movement. Choice D is incorrect because the type of muscle involved (smooth or skeletal) is not the defining factor between isometric and isotonic contractions.

5. Which group of elements is known for their reactivity and ability to form strong bonds with other elements?

• A. Noble gases
• B. Halogens
• C. Alkali metals
• D. Transition metals

Correct answer: B

Rationale: Halogens are a group of elements in the periodic table known for their high reactivity and ability to form strong bonds with other elements. They possess seven valence electrons, requiring only one more electron to achieve a stable electron configuration, making them highly reactive. Halogens readily form compounds with other elements by gaining an electron to achieve a full outer shell, resulting in the formation of strong covalent bonds. Noble gases (option A), on the other hand, are known for their inertness and stable electron configurations, making them unlikely to form bonds. Alkali metals (option C) are highly reactive but do not form bonds as strong as halogens. Transition metals (option D) are recognized for their variable oxidation states and ability to create complex ions but are not as reactive as halogens when it comes to bond formation.

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