All of the Following Are True Statements About Bacterial S-Layers

question 55

Multiple Choice

All of the following are true statements about bacterial S-layers EXCEPT:

• A) They are commonly found in Gram-positive cells as well as in archaea.
• B) They are a crystalline layer consisting of protein or glycoprotein.
• C) They present a formidable physical barrier to predators or parasites.
• D) They are found in bacteria freshly isolated from natural sources.
• E) They are found in bacteria isolated from laboratory cultures.

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Definitions:

Parkinson's Disease

A progressive neurological disorder characterized by movement difficulties, tremors, and stiffness, as well as non-motor symptoms.

Rigidity

The lack of flexibility or adaptability in thought processes, behaviors, or physical state.

Dementias

A group of conditions characterized by impairment of at least two brain functions, such as memory loss and judgment, severely affecting a person's daily life.