An 18-Month-Old Male Is Admitted to the Hospital with Symptoms

question 76

Multiple Choice

An 18-month-old male is admitted to the hospital with symptoms of a respiratory infection. The patient's mother reports that since birth, the toddler has frequently had a cough and copious nasal secretions. His weight gain has been poor, despite his excellent appetite. The patient appears in moderate respiratory distress, so oxygen therapy and intravenous fluids are initiated. The physician orders tests for cystic fibrosis due to the patient's history and clinical presentation. When the tests confirm the diagnosis, as the RN, you provide education to the mother regarding this autosomal recessive disease.
-The RN is aware that many different types of mutations have been identified in the gene that causes cystic fibrosis.Which of the following terms would best describe a mutation that changes a normal codon into a stop codon,usually resulting in a nonfunctional protein? 

• A)Missense mutation
• B)Nonsense mutation
• C)Point mutation
• D)Frameshift mutation

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Definitions:

Br2/CCl4

A reagent combination used in organic chemistry for adding bromine across double bonds in a non-polar solvent, carbon tetrachloride.

Molecular Structure

The arrangement of atoms within a molecule, defining its chemical and physical characteristics.

Physical Property

A characteristic of a substance that can be observed or measured without changing the substance's chemical identity, examples include density, melting point, and conductivity.

Trans Fat

An unhealthy type of fat that is created by adding hydrogen to liquid vegetable oils (hydrogenation), widely associated with increased risk of heart disease.