Health Educational Systems HESI Online Practice Questions and Exam Preparation

Health Educational Systems HESI Online Questions & Answers

• Question 521:

  Which of the following sentences is grammatically correct?

  A. Since the professor was excessively boring; many of his students fell asleep.
  B. Since the professor was excessively boring, many of his students fell asleep.
  C. Since the professor was excessively boring many of his students fell asleep.
  D. Since the professor was, excessively boring, many of his students fell asleep.
  B. Since the professor was excessively boring, many of his students fell asleep.

• Question 522:

  Reading Material

  (1)

  A research team from the University of Bonn has succeeded for the first time in using light stimuli to stop life-threatening cardiac arrhythmia in mouse hearts. (2) Furthermore, as shown in computer simulations at Johns Hopkins University, this technique could also be used successfully for human hearts. (3) The study opens up a whole new approach to the development of implantable optical defibrillators, in which the strong electrical impulses of conventional defibrillators are replaced by gentler, pain-free light impulses. (4) The Journal of Clinical Investigation has now published the results. (5) Ventricular fibrillation! (6) When the heart muscle races and no longer contracts in an orderly fashion, sudden death often follows due to the lack of blood circulation. (7) In such an emergency, a defibrillator helps to restore normal heart activity by means of intense electrical shocks. (8) In patients with a known risk for these arrhythmia, the prophylactic implantation of a defibrillator is the treatment of choice. (9) If ventricular fibrillation is detected, a pulse of electricity is automatically generated, which normalizes the excitation of the heart muscle and saves the person's life.

  (10)

  "When an implanted defibrillator is triggered, which unfortunately can also happen because of false detection of arrhythmia, it is always a very traumatic event for the patient", says the head of the study, Junior-Professor Philipp Sasse of the Institute of Physiology I at the University of Bonn. (11) "The strong electrical shock is very painful and can even damage the heart further". (12) Therefore, Professor Sasse's team investigated the principles for a pain-free, gentler alternative. (13) As the scientists have now shown, ventricular fibrillation can be stopped by optical defibrillation.

  According to the text, what inspired scientists to look for alternatives to the current defibrillators?

  A. With abundant light energy, scientists were looking for a way to put it to good use.
  B. Current defibrillators are outdated and expensive to implant.
  C. It worked on mice, so scientists thought it was possible that human patients could benefit from the technology.
  D. Current defibrillators can cause powerful, painful shocks to the heart, which may cause further damage.
  D. Current defibrillators can cause powerful, painful shocks to the heart, which may cause further damage.

• Question 523:

  

  Which of the following is an accurate paraphrasing of the underlined phrase?

  A. Many people are intrigued by the relationship between bacteria and plant life.
  B. Bacteria and alfalfa plants have a symbiotic relationship.
  C. Bacteria in alfalfa is worth studying.
  D. The gardening community is very invested in the bacteria found in alfalfa.
  B. Bacteria and alfalfa plants have a symbiotic relationship.

• Question 524:

  Which molecules are responsible for the base pairing action in DNA?

  A. Phosphate groups.
  B. Sugar molecules.
  C. Nitrogenous bases.
  D. Codons.
  C. Nitrogenous bases.

• Question 525:

  Reading Material

  A quantitative descriptive study focused on the attitudes of nurses towards chronic pain found in the cancer patient population. The study sample was composed of 93 nurses from three hospitals with an average age of 30.54 years. Of these, 45.2% had a bachelor's degree.

  Throughout their professional careers, 91.4% of the nurses said they had acquired training in the assessment and treatment of pain. A small percentage, 18.3%, acquired this training through postgraduate studies or equivalent. However, 76.5% of these nurses found their training insufficient and experienced difficulties in the assessment of chronic pain in cancer patients.

  Independent variables were not found to influence the attitudes of the nurses in this study. The study concluded that many nurses have little knowledge about cancer-related pain in the areas of pain assessment, pain management, psychological pain, spiritual pain, and the side effects of analgesic therapy. The results suggest the need for more training in the area of pain and pain assessment in this population.

  Which of these is not mentioned in the accompanying text?

  A. More than 30% of the nurses that participated in the study have a bachelor's degree.
  B. A small percentage of nurses acquired their training through postgraduate studies.
  C. Nurses need more training in the area of pain.
  D. This study was influenced by independent variables.
  D. This study was influenced by independent variables.

• Question 526:

  An organism that has a genotype of two dominant alleles for one gene is:

  A. Heterozygous.
  B. Homozygous.
  C. Multiparous.
  D. Nulliparous.
  B. Homozygous.

• Question 527:

  The traits which an organism shows (as opposed to what its genes code for), is known by which of the following terms?

  A. Phenotype.
  B. Genotype.
  C. Stereotype.
  D. Classification
  A. Phenotype.

• Question 528:

  Given enough time, unstable nuclei will:

  A. lose protons.
  B. evolve.
  C. decay into a stable form.
  D. degrade into a further unstable form.
  C. decay into a stable form.

• Question 529:

  What section of the human spine contains 5 vertebrae?

  A. Lumbar
  B. Cervical
  C. Thoracic
  D. Sacrum
  E. Coccyx
  A. Lumbar

• Question 530:

  The plasma membranes of cells are composed of:

  A. a single layer of phospholipid molecules.
  B. a bilayer of phospholipid molecules.
  C. proteins that act as transport highways.
  D. mitochondria.
  B. a bilayer of phospholipid molecules.