What Is the Main Reason That People Who Test Positive

question 13

Multiple Choice

What is the main reason that people who test positive for the genes associated with Alzheimer's disease do not always develop the disease?

• A) Psychological and biological stressors interact with physiological processes to produce Alzheimer's disease.
• B) The screening tests are often inaccurate.
• C) Some forms of the disease are subclinical, in that they never manifest themselves in overt behaviour.
• D) We still know so little about the brain processes involved.

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Definitions:

Disaccharides

Carbohydrates composed of two monosaccharides joined together, such as lactose, sucrose, and maltose, important in nutrition and metabolism.

Bile Secretion

The process by which the liver produces bile, a substance that helps digest fats.

Cystic Duct

A tube that transports bile from the gallbladder into the common bile duct and then into the small intestine.

Common Bile Duct

A duct that carries bile from the liver and gallbladder to the duodenum, important for digestion and absorption of fats.