Nursing Elites

1. What are the seven components of the digestive system?

• A. Mouth, esophagus, stomach, small intestine, large intestine, liver, pancreas
• B. Mouth, pharynx, esophagus, stomach, small intestine, large intestine, rectum
• C. Esophagus, stomach, liver, pancreas, small intestine, large intestine, rectum
• D. Pharynx, stomach, liver, pancreas, small intestine, large intestine, rectum

Correct answer: B

Rationale: The correct answer is B. The seven components of the digestive system are the mouth, pharynx, esophagus, stomach, small intestine, large intestine, and rectum. The mouth begins the process of digestion by chewing and mixing food with saliva. The pharynx serves as a passageway for food and air. The esophagus transports food from the mouth to the stomach. The stomach aids in digestion and acts as a temporary storage site. The small intestine is where most of the digestion and absorption of nutrients occur. The large intestine absorbs water and salts, forming feces. The rectum stores feces until they are eliminated through the anus. The other choices are incorrect as they do not list all seven essential components of the digestive system.

2. Veronica has to create the holiday schedule for the neonatal unit at her hospital. 35% of her staff will be unavailable during the holidays, and of the remaining staff, only 20% are certified to work in the neonatal unit. What percentage of the total staff is certified and available to work?

• A. 7%
• B. 13%
• C. 65%
• D. 80%

Correct answer: B

Rationale: The correct answer is 13%. To find the percentage of the total staff that is certified and available to work, we first calculate the percentage of staff available, which is 100% - 35% = 65%. Then, we find the percentage of the available staff that is certified, which is 20% of 65% = 0.20 × 0.65 = 0.13, or 13%.

3. When magnesium metal reacts with hydrochloric acid, hydrogen gas is produced. What evidence suggests a chemical reaction is occurring?

• A. A change in color
• B. The formation of a gas
• C. Dissolving in a liquid
• D. No change in temperature

Correct answer: B

Rationale: The formation of a gas is evidence of a chemical reaction occurring. In this case, when magnesium metal reacts with hydrochloric acid, hydrogen gas is produced, indicating a chemical change is taking place. The production of gas is a clear indication of a chemical reaction, as new substances are being formed. A change in color might suggest a physical change, dissolving in a liquid could be a physical or chemical change depending on the context, and no change in temperature does not necessarily indicate a chemical reaction, as some reactions are endothermic or release small amounts of heat that may not be easily noticeable.

4. Which of the following occurred first in Alexander Graham Bell's life?

• A. Helped found the National Geographic Society.
• B. Developed a metal detector.
• C. Moved to Canada.
• D. Invented the telephone.

Correct answer: C

Rationale: Alexander Graham Bell moved to Canada early in his life, before inventing the telephone and developing other technologies. Choice A is incorrect because Bell did not help found the National Geographic Society; this happened years after his major inventions. Choice B is incorrect because Bell developed a metal detector after inventing the telephone. Choice D is incorrect because Bell invented the telephone after moving to Canada.

5. Which property of matter refers to the amount of space occupied by an object?

• A. Mass
• B. Volume
• C. Weight
• D. Density

Correct answer: B

Rationale: Volume refers to the amount of space occupied by an object. It is a measure of the three-dimensional space that an object occupies. Mass, on the other hand, refers to the amount of matter in an object, weight is the force of gravity acting on an object, and density is the mass of an object per unit volume. In this context, volume is the most appropriate choice as it directly relates to the amount of space an object occupies.

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