Bacteria Demonstrating Weak Decarboxylase Activity

question 5

Multiple Choice

Bacteria demonstrating weak decarboxylase activity

• A) will have a false-negative test.
• B) may take up to 4 days to be positive.
• C) require extra reagents to show the positive reaction.
• D) will have a false-positive test.

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Definitions:

Huntington Disease

A hereditary disorder caused by a genetic mutation, leading to the progressive degeneration of nerve cells in the brain.

Recessive Gene

A genetic trait that is expressed in an organism's phenotype only if two copies of the gene are present, but is masked if a dominant gene is present.

Dominant Gene

A gene that expresses its phenotypic trait even when only one copy is present in the genotype.

Recessive

A genetic term describing an allele that produces its characteristic phenotype only when its paired allele is identical.