Which One of the Following Elements Plays a Critical Role

question 25

Multiple Choice

Which one of the following elements plays a critical role in the structure of chlorophyll?

• A) magnesium
• B) manganese
• C) calcium
• D) zinc

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Definitions:

Enamine

Derivatives of alkenes formed from the reaction between a secondary amine and a carbonyl group, often used as intermediates in organic synthesis.

Imine

A functional group or compound featuring a carbon-nitrogen double bond, often formed by the condensation of an aldehyde or ketone with an amine.

Racemizes

Refers to the process of converting an optically active compound into a racemic mixture, meaning a blend of equal amounts of enantiomers.

Esterifies

The process by which an ester is formed, usually from the reaction between an acid and an alcohol with the elimination of water.