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The Importance of Stable Free Radicals in the Mechanism of E.coli

question 79

Multiple Choice

The importance of stable free radicals in the mechanism of E.coli ribonucleotide reductase was identified in the early 1970s.The existence of stable radicals in a protein had not been previously observed.Which of the following amino acids can exist as a stable radical in ribonucleotide reductase?


Definitions:

Cannon-Bard Theory

A theory in psychology proposing that emotional feelings and physiological reactions to stimuli occur simultaneously and independently.

James-Lange Theory

A psychological theory suggesting that emotions result from physiological reactions to external events before the emotional experience occurs.

Schachter-Singer Theory

A theory of emotion that states emotions are determined by physiological arousal and the cognitive interpretation of that arousal.

Conscious Evaluative Reaction

A deliberate and aware assessment of a situation or event, often involving judgment on value, quality, or significance.

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