HESI A2 Practice Questions

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Answer key on last page Questions 1 to 4 pertain to the following passage: Protozoa are microscopic, one-celled organisms that can be free-living or parasitic in nature. They are able to multiply i... n humans, a factor which contributes to their survival and also permits serious infections to develop from just a single organism. Transmission of protozoa that live in the human intestine to another human typically occurs by a fecal-oral route (for example, contaminated food or water, or person-to-person contact). Protozoa that thrive in the blood or tissue of humans are transmitted to their human hosts by an arthropod vector (for example, through the bite of a mosquito or sand fly). Helminths are large, multicellular organisms that are generally visible to the naked eye in their adult stages. Like protozoa, helminths can be either free-living or parasitic in nature. In their adult form, helminths cannot multiply in humans. There are three main groups of helminths (derived from the Greek word for worms) that are human parasites: • Flatworms (platyhelminths) – these include the trematodes (flukes) and cestodes (tapeworms) • Thorny-headed worms (acanthocephalins) – the adult forms of these worms reside in the gastrointestinal tract. The acanthocephala are thought to be intermediate between the cestodes and nematodes • Roundworms (nematodes) – the adult forms of these worms can reside in the gastrointestinal tract, blood, lymphatic system or subcutaneous tissues. Alternatively, the immature (larval) states can cause disease through their infection of various body tissues 1. As used in this passage, the word "parasite" means: a. A person who lives in Paris b. An organism that live on or in another organism c. Microscopic insects d. A person who takes advantage of the generosity of others 2. According to the passage, adult Roundworms can live in: a. the arthropod vector b. fecal matter c. the subcutaneous tissue of humans d. contaminated water 3. You can infer from this passage that: a. larval stages of parasites are more dangerous than the adult forms b. mosquitoes do not transmit parasites c. worms cannot infect humans d. clean sanitary conditions will keep you free of protozoa 4. According to the passage, which of the following is true? I. Protozoa live in the blood or tissue of humans II. Adult helminthes cannot reproduce in humans III. Adult Thorny-headed worms live in the intestinal tract a. I only b. II only c. I and II only d. I, II, and III 5. What is the best definition for the word latent? a. Thorough b. Dormant c. Current d. Obvious 6. What is the meaning of the word precipitous? a. Cautious b. Languid c. Subtle d. Abrupt 7. What is the best definition of the word recur? a. Redo b. Recreate c. Return d. Revolve 8. Select the word or phrase that makes the following sentence grammatically correct. Their experience at the opera, viewing the company's production of Turandot, was so bad that ________ have not yet returned. a. he and she b. we c. him and her d. him and I 9. Select the word or phrase that makes the following sentence grammatically correct. After hearing about everyone's positive experience at the party, Desmond realized that he ___________. a. should have went b. should have gone c. should go d. should have been 10. Select the word or phrase that makes the following sentence grammatically correct. Loman made a quick telephone call to the person _______ was responsible for organizing the event. a. that b. which c. who d. this 11. A roast was cooked at 325 ºF in the oven for 4 hours. The internal temperature rose from 32 ºF to 145 ºF. What was the average rise in temperature per hour? a. 20.2 ºF/hr b. 28.25ºF/hr c. 32.03ºF/hr d. 37ºF/hr 12. 31⁄8 X 6 1⁄3 X 2 2⁄5 a. 47 1⁄2 b. 36 7⁄8 c. 40 3⁄8 d. 42 4⁄5 13. 11⁄4 of (?) = 1.5 a. 80 b. 120 c. 140 d. 150 14. Which of the following is not true for all cells? a. Cells are the basic structures of any organism b. Cells can only reproduce from existing cells c. Cells are the smallest unit of any life form that carries the information needed for all life processes d. All cells are also called eukaryotes 15. Which of the following correctly describes the trait Ll, if "L" represents tallness and "l" represents shortness? a. heterozygous genotype and tall phenotype b. heterozygous phenotype and tall genotype c. homozygous genotype and short phenotype d. homozygous phenotype and short genotype 16. Which of the following statements about the Krebs cycle is true? a. It occurs only once per glucose molecule b. It is an anaerobic process c. It takes place in the cytoplasm d. It starts with the conversion of one pyruvate molecule into 2 acetyl-CoA molecules 17. Which of the answer choices provided best defines the following statement: For a given mass and constant temperature, an inverse relationship exists between the volume and pressure of a gas? a. Ideal Gas Law b. Boyle's Law c. Charles' Law d. Stefan-Boltzmann Law 18. What law describes the electric force between two charged particles? a. Ohm's law b. Coulomb's law c. The Doppler effect d. Kirchhoff's current law 19. The rate of a chemical reaction depends on all of the following except: a. temperature b. surface area c. presence of catalysts d. amount of mass lost 20. How many organ systems are there in the human body? a. 4 b. 7 c. 11 d. 13 21. Which of the following terms means close to the trunk of the body? a. Superficial b. Sagittal c. Proximal d. Distal 22. Hemoglobin transports oxygen from the lungs to the rest of the body, making oxygen available for cell use. What is hemoglobin? a. an enzyme b. a protein c. a lipid d. an acid [Show More]

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