A Fatal Central Nervous System Disorder Caused by a Copy

question 123

Multiple Choice

A fatal central nervous system disorder caused by a copy number variation-more than 35 repetitions of a particular set of three base pairs-is _____.

• A) Down syndrome
• B) nearsightedness
• C) fragile X syndrome
• D) Huntington's disease

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Definitions:

Stomach Acidity

The concentration of hydrochloric acid in the stomach, aiding in digestion and protecting against pathogens.

Pepsin

An enzyme produced in the stomach that breaks down proteins into peptides.

Peptic Ulcers

A condition characterized by sores or lesions forming on the lining of the stomach or the first part of the small intestine, typically as a result of inflammation caused by the bacteria H. pylori, or the use of nonsteroidal anti-inflammatory drugs (NSAIDs).

Chemical Digestion

The breakdown of complex food molecules into simpler ones through chemical reactions, facilitated by enzymes, in the digestive system.