Nursing Elites

1. What is stoichiometry?

• A. The study of energy changes in chemical reactions
• B. The study of the mass relationships in chemical reactions
• C. The study of atomic structure
• D. The study of molecular geometry

Correct answer: B

Rationale: Stoichiometry is the branch of chemistry that deals with the quantitative relationships between reactants and products in chemical reactions. It focuses on the calculation of the amounts of substances consumed and produced in a reaction based on the balanced chemical equation. Choice A is incorrect because the study of energy changes in chemical reactions falls under thermodynamics. Choice C is incorrect as atomic structure is related to the arrangement of atoms within molecules. Choice D is incorrect as molecular geometry deals with the spatial arrangement of atoms within molecules.

2. The length of a rectangle is twice its width, and its area is equal to the area of a square with 12 cm sides. What will be the perimeter of the rectangle to the nearest whole number?

• A. 36 cm
• B. 46 cm
• C. 51 cm
• D. 56 cm

Correct answer: A

Rationale: Let the width of the rectangle be x cm, and its length be 2x cm. The area of the rectangle is 2x * x = 2x², and the area of the square is 12² = 144 cm². Setting the areas equal gives 2x² = 144. Solving for x gives x = 6. Thus, the width is 6 cm, and the length is 12 cm. The perimeter is 2(6 + 12) = 36 cm. Therefore, the correct answer is 36 cm. Choice B, 46 cm, is incorrect because it does not match the calculated perimeter. Choices C and D are also incorrect as they do not reflect the correct calculation of the rectangle's perimeter.

3. What is the best description of the word 'insidious'?

• A. stealthy
• B. deadly
• C. collapsed
• D. new

Correct answer: A

Rationale: The correct answer is A: 'stealthy.' 'Insidious' is often used to describe something that proceeds in a gradual, subtle, but harmful way. It is not directly or openly harmful like 'deadly,' nor does it mean 'collapsed' or 'new.' Therefore, 'stealthy' best captures the meaning of 'insidious.'

4. To critique something is to ___________.

• A. appraise it
• B. condemn it
• C. extol it
• D. berate it

Correct answer: B

Rationale: To critique something means to evaluate and judge it, often pointing out its faults or shortcomings. Condemning something implies expressing strong disapproval or criticism of it, which aligns closely with the concept of critiquing. 'Appraise' means to assess the value or quality of something, which is not necessarily negative. 'Extol' means to praise highly, which is the opposite of critiquing. 'Berate' means to scold or criticize someone angrily, which is not the same as objectively evaluating something as in critiquing. Therefore, 'condemn it' is the most suitable choice among the given options.

5. What type of transport moves substances across the cell membrane using energy?

• A. Passive Transport
• B. Active Transport
• C. Facilitated Diffusion
• D. Osmosis

Correct answer: B

Rationale: The correct answer is B: Active Transport. Active transport moves substances across the cell membrane by utilizing energy from the cell, typically in the form of ATP. This process allows the cell to move molecules against their concentration gradient, requiring energy expenditure. Choices A, C, and D are incorrect because passive transport does not require energy input, facilitated diffusion involves the assistance of proteins but does not directly use energy, and osmosis is the diffusion of water molecules specifically, not substances, across a selectively permeable membrane.

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