The Nervous System Typically

question 89

Multiple Choice

The nervous system typically

• A) is sterile.
• B) has a small number of normal microbiota.
• C) contains Gram-positive bacteria.
• D) contains a small number of viruses.
• E) has transient microbiota.

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Definitions:

DNA

Deoxyribonucleic acid, a molecule that carries the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms and many viruses.

RNA

Ribonucleic acid, a nucleic acid present in all living cells that acts as a messenger carrying instructions from DNA for controlling the synthesis of proteins.

Point Mutations

Genetic alterations caused by the change of a single nucleotide base in the DNA sequence.

Mutations

Changes in the DNA sequence that affect genetic information, which can lead to variations in phenotype.