What Is Wrong with This Diagram of Secondary Structure in a Polypeptide

question 145

Multiple Choice

What is wrong with this diagram of secondary structure in a polypeptide chain? (Hint: In the representation of ? sheets as paired arrows, the convention is that the amino end is at the base of the arrow and the carboxyl end is at the tip.)

• A)It has an amino end and a carboxyl end.
• B)The directionality of the polypeptide chain reverses orientation between the arrows representing a ? sheet.
• C) ? sheets cannot form when the arrows are pointed in the same direction.
• D)Nothing is wrong with the diagram.

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Definitions:

Decay Theory of Forgetting

A psychological theory suggesting that memory fades over time due to the mere passage of time unless it is actively recalled or rehearsed.

Repression Theory

A psychological concept suggesting that individuals unconsciously push disturbing thoughts, desires, and memories out of conscious awareness.

Interference Theory

A theory suggesting that the ability to remember information is affected by competing information, either before or after the learning process.

Proactive Interference

The difficulty in learning new information because of the interference from existing, previously learned information.