FREE ASCP Technologist in Chemistry Questions and Answers

Question 1

Which group of functional groups is present in sugars all the time?

Accepted Answer

Hydroxyl qroups

Answer

Sugars, also known as carbohydrates, are organic compounds characterized by the presence of multiple hydroxyl (-OH) functional groups. These hydroxyl groups, along with a carbonyl group (either an aldehyde or a ketone), are fundamental to the structure and chemical properties of all sugars. They enable sugars' solubility in water and their crucial roles in biological processes.

Question 2

Why is oxygen necessary for us?

Accepted Answer

To create ATP, our cells require oxygen.

Answer

Oxygen is essential for cellular respiration, the metabolic process by which cells generate energy in the form of adenosine triphosphate (ATP). In the mitochondria, oxygen acts as the final electron acceptor in the electron transport chain, a critical step that drives the production of the vast majority of ATP needed for all cellular functions.

Question 3

Which ion is necessary for maintaining pH balance among the following?

Accepted Answer

Hydrogen

Answer

Hydrogen ions (H+) play a crucial role in maintaining pH balance within the body. The concentration of hydrogen ions directly determines the acidity or alkalinity of bodily fluids. Various buffer systems, involving molecules like bicarbonate, work to regulate H+ levels to keep pH within a narrow, healthy range essential for physiological function.

Question 4

Which of these statements about a patient's likelihood of developing metabolic acidosis or alkalosis is often true if they are removing a lot of waste from their body?

Accepted Answer

Vomiting can induce metabolic alkalosis, whereas diarrhea can induce metabolic acidosis.

Answer

Excessive vomiting leads to the loss of stomach acid (hydrochloric acid), which contains hydrogen ions, resulting in an increase in blood pH and metabolic alkalosis. Conversely, severe diarrhea causes a significant loss of bicarbonate from the intestines, leading to a decrease in blood pH and metabolic acidosis. Therefore, these conditions have opposite effects on acid-base balance.

Question 5

Which test result most closely matches the definition of metabolic alkalosis?

Accepted Answer

High pH, high PaCO2, high bicarbonate

Answer

Metabolic alkalosis is characterized by an elevated blood pH (alkalemia) due to an excess of bicarbonate (HCO3-) in the body. The body attempts to compensate for this alkalosis by hypoventilation, which leads to an increase in the partial pressure of carbon dioxide (PaCO2) in the blood. Thus, the test results would show high pH, high PaCO2, and high bicarbonate.

ASCP Phlebotomy Technician Exam Practice Test

ASCP Phlebotomy Technician Exam Practice Test

FREE ASCP Technologist in Chemistry Questions and Answers