18% of a Population Is Infected with a Certain Disease

question 25

Multiple Choice

1.8% of a population is infected with a certain disease.There is a test for the disease; however,the test is not completely accurate.94.2% of those who have the disease will test positive.However 4.8% of those who do not have the disease will also test positive (false positives) .What is the probability that a person who tests positive actually has the disease?

• A)0.360
• B)0.265
• C)0.942
• D)0.018
• E)0.735

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Definitions:

Glucose

A simple sugar that is an important energy source in living organisms and is a component of many carbohydrates.

ATP

Stands for adenosine triphosphate, a molecule that carries energy within cells for metabolism.

Feedback Inhibition

A regulatory mechanism in which the end product of a metabolic pathway inhibits an upstream process, thus controlling the rate of the pathway.

Metabolic Pathway

A series of chemical reactions occurring within a cell that leads to the conversion of one or more substances into another.