Microbiology: An Introduction
11th Edition
ISBN: 9780321733603
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: Benjamin Cummings
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Chapter 2, Problem 3CAE
Newborn babies are tested for phenylketonuria (PKU), an inherited disease. Individuals with this disease are missing an enzyme to convert phenylalanine (phe) to tyrosine; the resulting accumulation of phe can cause mental retardation, brain damage, and seizures. The Guthrie test for PKU involves culturing Bacillus subtilis, which requires phe to grow. The bacteria are grown on media with a drop of the baby’s blood.
- a. What type of chemical is phenylalanine?
- b. What does “no growth” in the Guthrie test mean?
- c. Why must individuals with PKU avoid the sweetener aspartame?
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Chapter 2 Solutions
Microbiology: An Introduction
Ch. 2 - What is a chemical element?Ch. 2 - DRAW IT Diagram the electronic configuration of a...Ch. 2 - What type of bond holds the following atoms...Ch. 2 - Classify the following types of chemical...Ch. 2 - Bacteria use the enzyme urease to obtain nitrogen...Ch. 2 - Classify the following as subunits of either a...Ch. 2 - DRAW IT The artificial sweetener aspartame, or...Ch. 2 - DRAW IT The following diagram shows the...Ch. 2 - Prob. 9RCh. 2 - Prob. 10R
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