HESI A2
HESI A2 Practice Test Biology
1. What is the typical result of mitosis in humans?
- A. two diploid cells
- B. two haploid cells
- C. four diploid cells
- D. four haploid cells
Correct answer: A
Rationale: The correct answer is A: two diploid cells. Mitosis is a type of cell division that results in two daughter cells, each having the same number of chromosomes as the parent cell. In humans, the typical result of mitosis is the formation of two diploid cells, not haploid or four cells. Choice B, two haploid cells, is incorrect because mitosis produces genetically identical diploid cells. Choices C and D, four diploid cells and four haploid cells, respectively, are incorrect as mitosis results in two daughter cells, not four.
2. Select the correct word for the blank in the sentence: 'After completing the intense surgery, Dr. Capra needed a long ____.'
- A. brake
- B. break
- C. brink
- D. broke
Correct answer: B
Rationale: The correct word to fill in the blank is 'break.' In this context, 'break' refers to a pause or rest, which is what Dr. Capra needed after completing the intense surgery. 'Brake' (choice A) refers to a device used to slow or stop a vehicle. 'Brink' (choice C) means the edge or verge of something. 'Broke' (choice D) is the past tense of 'break' and is grammatically incorrect in this sentence.
3. Which word is not spelled correctly? The government official was grateful to receive that award.
- A. government
- B. official
- C. grateful
- D. receive
Correct answer: A
Rationale: The correct spelling of the word is 'government' with an 'n' after the 't.' In the sentence provided, the word 'goverment' is misspelled, making it the correct answer choice. Choices B, C, and D are all spelled correctly within the context of the sentence, so they are not the correct answer.
4. The scientific name for a house cat is Felis catus. This indicates the house cat’s ___________ and ___________.
- A. kingdom; family
- B. order; subspecies
- C. phylum; class
- D. genus; species
Correct answer: D
Rationale: The scientific name for an organism consists of its genus and species. In this case, 'Felis' refers to the genus, while 'catus' refers to the species, thus indicating the house cat's genus and species as Felis catus. Therefore, the correct answer is 'D.' Choices A, B, and C are incorrect because a scientific name does not include information about the kingdom, family, order, subspecies, phylum, or class of an organism.
5. Another word for CONTEMPLATING is?
- A. Impasse
- B. Impartial
- C. Pondering
- D. Emending
Correct answer: C
Rationale: "Pondering" is another word for contemplating because it means to think about something carefully or thoroughly. Both terms imply deep reflection or consideration of a subject or idea. Therefore, "pondering" best captures the meaning of contemplating among the given choices.
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