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DHA Medical Laboratory Technologist (DHA-MLT) Practice Questions and Tests - Topics


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Understanding what is on the DHA MLT exam is crucial step in preparing for the exam. You will need to have an understanding of the testing domain (topics covered) to be sure you are studing the correct information.

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There is no doubt that this is a strategic step in achieving certification and advancing your career.

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DHA Medical Laboratory Technologist Exam Blueprint

Understanding the exact breakdown of the DHA Medical Laboratory Technologist test will help you know what to expect and how to most effectively prepare. The DHA Medical Laboratory Technologist has 100 multiple-choice questions The exam will be broken down into the sections below:

DHA Medical Laboratory Technologist Exam Blueprint
Domain Name
General Laboratory
Chemistry
Hematology
Immunology/Immunohematology
Microbiology
Urinalysis

DHA Medical Laboratory Technologist - Exam Topics Sample Questions

When fluid passes through a semipermeable membrane, moving from a solute that is low concentrate to an area of high concentration, it would be considered which of the following?

Correct Answer:
osmosis
the correct answer to the question regarding the process in which fluid passes through a semipermeable membrane from an area of low solute concentration to an area of high solute concentration is osmosis. here’s a detailed explanation of the concept:

osmosis is a fundamental biological and chemical process where solvent molecules move across a semipermeable membrane from a region of lower solute concentration to a region of higher solute concentration. the goal of this movement is to equalize solute concentrations on both sides of the membrane, creating a state of isotonicity. semipermeable membranes permit the passage of solvent molecules like water but block solute molecules, such as salts or sugars.

this process is vital for many biological functions, especially in maintaining cellular integrity and function. for example, osmosis is crucial for the hydration of cells in various organisms. it helps regulate the internal concentration of body fluids, ensuring cells neither swell excessively (which can lead to bursting) nor shrink (which can result in cellular dehydration).

in the context of the given question, when fluid (solvent) moves towards a higher concentration of solute, it dilutes that concentration until equilibrium is reached. this movement of water can occur naturally in biological systems or can be observed in laboratory settings using artificial semipermeable membranes.

other terms listed in the question, such as plasmaphoresis, flagella, and phagocytosis, describe entirely different processes: - **plasmaphoresis** involves the removal, treatment, and return or exchange of blood plasma or components in the bloodstream. - **flagella** are long, whip-like structures that propel organisms or cells through a liquid environment. - **phagocytosis** is a cellular process where cells engulf and digest particles or other cells, usually as part of the immune response.

therefore, based on the description of fluid movement across a semipermeable membrane from an area of low solute concentration to an area of high solute concentration, the correct answer is unequivocally osmosis. this process is essential for many physiological functions and is one of the most important principles in cellular biology and chemistry.

What is a normal value for the factor ix assay test?

Correct Answer:
50 - 200% of the reference value.


the correct normal value for the factor ix assay test is typically between 50 to 200% of the reference value. this range indicates the percentage of factor ix activity compared to what is considered normal in a healthy individual's blood. factor ix is a crucial protein in the blood coagulation process, and its levels are measured to assess the blood's ability to form clots properly.

factor ix assay tests are particularly important in diagnosing and managing conditions related to blood clotting disorders. for instance, low levels of factor ix activity can be indicative of hemophilia b, a genetic disorder that results in insufficient clotting. conversely, elevated levels might suggest an increased risk of thrombosis, where blood clots form abnormally, potentially blocking blood vessels.

abnormal results from a factor ix assay could also signal other health issues such as vitamin k deficiency, which is vital for the synthesis of factor ix, or liver disease, since the liver is responsible for producing most of the clotting factors, including factor ix. therefore, maintaining factor ix activity within the 50-200% range is essential for ensuring effective blood clotting and overall vascular health.