HESI A2
HESI A2 Vocabulary 2023
1. What is the best description for the abbreviation EEG?
- A. A test of brain activity
- B. A medical service
- C. A heartbeat monitor
- D. A specialist in dentistry
Correct answer: A
Rationale: The correct answer is A: 'A test of brain activity.' EEG stands for Electroencephalogram, a test used to evaluate the electrical activity in the brain. It helps diagnose conditions like epilepsy, seizures, and other brain disorders. Choice B, 'A medical service,' is too broad and does not specifically refer to EEG. Choice C, 'A heartbeat monitor,' is incorrect as EEG does not monitor the heart. Choice D, 'A specialist in dentistry,' is unrelated to the abbreviation EEG.
2. What does 'Obsolete' mean?
- A. Innovative
- B. Outdated
- C. Effective
- D. Advanced
Correct answer: B
Rationale: The correct answer is 'B: Outdated.' Obsolete refers to something that is outdated or no longer in use. 'Innovative' (choice A) means introducing new ideas or methods; 'Effective' (choice C) means successful in producing a desired result; 'Advanced' (choice D) means far on or ahead in development or progress. Therefore, 'Outdated' is the most appropriate antonym for 'Obsolete.'
3. He ate four pieces of fried chicken at dinner, and _____ vegetables.
- A. no
- B. some
- C. little
- D. few
Correct answer: A
Rationale: The correct answer is 'no' as it implies the absence of vegetables, indicating that he did not consume any vegetables along with the fried chicken. 'Some' (choice B) implies an unspecified quantity of vegetables were eaten, 'little' (choice C) implies a small amount of vegetables, and 'few' (choice D) is used for countable items, not for uncountable items like vegetables.
4. What is Diffusion?
- A. Movement of materials from low concentration to high concentration
- B. Movement of materials from high concentration to low concentration
- C. Absorption of nutrients
- D. Breaking of materials
Correct answer: B
Rationale: Diffusion is the process where substances move from an area of high concentration to an area of low concentration. This movement occurs due to the random motion of particles and continues until equilibrium is reached. Choice A is incorrect because diffusion occurs down the concentration gradient, from high to low concentration, not from low to high concentration. Choice C is incorrect as it refers to the uptake of substances by cells, not the general process of diffusion. Choice D is incorrect as it does not accurately describe the process of diffusion; diffusion involves the movement of substances, not the breaking of materials.
5. Someone who is Altruistic might also be called ______
- A. Selfish
- B. Charitable
- C. Greedy
- D. Hateful
Correct answer: B
Rationale: Altruistic individuals exhibit selfless concern for others, demonstrating a charitable nature. Therefore, being described as charitable aligns with the trait of altruism. Choice A, 'Selfish,' is the opposite of altruistic as it denotes concern only for oneself. Choice C, 'Greedy,' implies a strong desire for more and is not synonymous with altruism. Choice D, 'Hateful,' suggests a feeling of strong dislike, which is not reflective of altruistic behavior.
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