a cell that does not contain membrane bound organelles or a defined nucleus would be classified as
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HESI A2

Biology HESI A2 Practice Test

1. A cell that does not contain membrane-bound organelles or a defined nucleus would be classified as:

Correct answer: C

Rationale: A cell that does not contain membrane-bound organelles or a defined nucleus is classified as prokaryotic. Prokaryotic cells lack a true nucleus, and their genetic material is typically found in a region called the nucleoid. Examples of prokaryotic organisms include bacteria and archaea. Eukaryotic cells, on the other hand, contain membrane-bound organelles and a true nucleus, distinguishing them from prokaryotic cells. Embryonic and symbiotic classifications are not directly related to the presence of organelles or a nucleus in cells.

2. What does 'Obsolete' mean?

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Rationale: The correct answer is 'B: Outdated.' Obsolete refers to something that is outdated or no longer in use.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 Therefore, 'Outdated' is the most appropriate antonym for 'Obsolete.'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. Which sound waves have a higher pitch?

Correct answer: A

Rationale: Sound waves that are closer together have a higher pitch. This is explained by the Doppler Effect, where as a source of sound moves closer to an observer, the waves are compressed, resulting in a higher frequency and a higher pitch. Conversely, when the source moves away, the waves are stretched, leading to a lower frequency and a lower pitch. Therefore, choice A is correct. Choices B, C, and D are incorrect as they do not accurately describe the relationship between sound wave frequency and pitch.

4. Which sentence is NOT GRAMMATICALLY CORRECT?

Correct answer: B

Rationale: Choice B is incorrect due to the use of 'than' instead of 'then.' The correct word in this context is 'then' to indicate the order of actions. Choices A, C, and D are all grammatically correct. In choice A, the sentence structure is correct with a clear cause-effect relationship. Choice C is grammatically sound, describing the dietician's mistake. Choice D is also grammatically correct, showing a cause (the child feeling ill) leading to an effect (the nurse sending him home).

5. In the world of pharmaceuticals, a recall policy is a policy involving the ___________.

Correct answer: B

Rationale: In the world of pharmaceuticals, a recall policy is a policy involving the withdrawal of products from the market, typically due to safety concerns, defects, contamination, or other issues that could potentially harm consumers. This process is essential to protect public health and ensure the safety and quality of pharmaceutical products. Choice A, 'ability to remember,' is incorrect as it does not relate to the concept of recalling products in the pharmaceutical industry. Choice C, 'manufacture of cosmetics,' is incorrect as it is unrelated to pharmaceutical recalls. Choice D, 'effectiveness of customers,' is also incorrect as it does not pertain to the purpose of a recall policy in the pharmaceutical field.

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