HESI A2

HESI A2 practice questions, page 8 of 12, with answer review and explanations.

Question 36

What is the major difference between matter at the nanoscale and matter at larger scales such as millimeters or inches?

  1. At the nanoscale, metals are bendable, and at larger scales they are rigid.
  2. Matter has different and special characteristics at the nanoscale.
  3. At the nanoscale, matter has the same properties as matter at the atomic level.
  4. There is no difference.

Question 37

Which claim from the passage best describes the benefits of nanotechnology?

  1. Scientists can develop novel technologies and products.
  2. Nanotechnology is defined as the understanding and control of matter at dimensions of roughly 1 to 100 nanometers.
  3. The different colors can be used in simple medical tests to indicate infection or disease.
  4. Unique properties of materials emerge.

Question 38

What is the author’s primary purpose in writing this essay?

  1. to explain how to utilize the nanoscale
  2. to review the conversion between the nanoscale and nanotechnology
  3. to advocate for the usage of more nanotechnology
  4. to describe nanotechnology and what it is

Question 39

Which sentence best summarizes the benefits of the new silk technology?

  1. The new technology allows for closer interaction between machines and living tissue, paving the way for more advanced implantable devices.
  2. These implants have the potential to maximize the contact between electrodes and brain tissue, while minimizing damage to the brain.
  3. They could provide a platform for a range of devices with applications in epilepsy, spinal cord injuries, and other neurological disorders.
  4. The arrays could potentially read the complex signals in the brain that direct movement, and then route those signals to healthy muscles or prosthetic devices.

Question 40

Which of the following is NOT a characteristic of the silk brain recording device?

  1. Durability
  2. Flexibility
  3. Different rates of dissolution
  4. Needle-like electrodes