Nursing Elites

1. Choose the meaning of the word inhibiting in the following sentence: 'This medication works by inhibiting the action of a certain enzyme.'

• A. Occupying
• B. Speeding
• C. Hindering
• D. Enhancing

Correct answer: C

Rationale: Inhibiting means to prevent, restrain, or impede. In the context of the sentence, inhibiting the action of a certain enzyme refers to hindering or slowing down the enzyme's activity. Choice A ('Occupying') is incorrect as inhibiting does not mean taking up space. Choice B ('Speeding') is incorrect as inhibiting does not mean to accelerate. Choice D ('Enhancing') is incorrect as inhibiting is the opposite of enhancing.

2. A tissue examined under the microscope exhibits the following characteristics: cells found on the internal surface of the stomach, no extracellular matrix, cells tall and thin, no blood vessels in the tissue. What type of tissue is this?

• A. Epithelial
• B. Connective tissue
• C. Cartilage
• D. Nervous

Correct answer: A

Rationale: The correct answer is 'Epithelial.' Epithelial tissue is characterized by cells lining surfaces and cavities, such as the stomach. It does not contain blood vessels, and the cells are tall and thin. The absence of an extracellular matrix is typical of epithelial tissue, making it the most suitable choice in this scenario. Connective tissue, like cartilage and nervous tissue, have different characteristics that do not align with the description provided in the question.

3. Where is DNA stored?

• A. The nucleus
• B. Ribosomes
• C. Endoplasmic reticulum
• D. Mitochondria

Correct answer: A

Rationale: DNA is stored in the nucleus of a cell. The nucleus houses the cell's genetic material, including the DNA, which contains the instructions for building and operating the cell. The nucleus controls the activities of the cell and is essential for proper cell function and reproduction. Ribosomes are responsible for protein synthesis, not DNA storage. The endoplasmic reticulum is involved in protein and lipid synthesis, storage, and transport but does not store DNA. Mitochondria are known as the powerhouse of the cell, producing energy in the form of ATP, but they do not store DNA.

4. If you are at the zenith of your career, you are ___________.

• A. just getting started
• B. preparing for retirement
• C. at the pinnacle of success
• D. having trouble with your superiors

Correct answer: C

Rationale: When someone is at the zenith of their career, it means they have reached the highest point or peak of success in their professional life. This suggests that they have achieved their utmost potential and are enjoying the height of their career accomplishments. Choice A, 'just getting started,' is incorrect as it implies the beginning of a career rather than the peak. Choice B, 'preparing for retirement,' is incorrect because being at the zenith of one's career usually signifies the prime of one's professional success, not the preparation for retirement. Choice D, 'having trouble with your superiors,' is incorrect as it is unrelated to the concept of reaching the peak of success in one's career.

5. Which of the following is the largest organ in the human body?

• A. Liver
• B. Skin
• C. Brain
• D. Heart

Correct answer: B

Rationale: The skin is the largest organ in the human body. It serves as a protective barrier against the environment, regulates temperature, and provides sensory information. The liver, brain, and heart are vital organs, but they are not as extensive as the skin. The liver is primarily responsible for detoxification and metabolism. The brain is the control center of the body, coordinating various functions. The heart is a crucial organ that pumps blood throughout the body. However, in terms of size, the skin surpasses all of these organs.

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