In the Universal System, #19 Refers to Permanent Mandibular

question 24

Multiple Choice

In the Universal System, #19 refers to permanent mandibular

• A) Left first molar
• B) Left second molar
• C) Right first molar
• D) Left second premolar

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Definitions:

Fischer Projection

A two-dimensional representation of a 3D organic molecule by projection, depicting stereochemistry at chiral centers.

Stereochemical Relationship

The relative spatial arrangement of atoms within molecules that dictates their chemical behavior and reactions, focusing on how these relationships affect molecular properties.

Fischer Notation

A method used to represent the three-dimensional structure of molecules using two-dimensional projections, particularly sugars.

Enantiomers

Molecules that are mirror images of each other but cannot be superimposed on each other, often exhibiting different properties in a chiral environment.