Mandibular First Premolars Typically Have Two Roots, a Mesial and a Distal

question 23

Multiple Choice

Mandibular first premolars typically have two roots, a mesial and a distal. An anomaly is formation of a third auxiliary root.

• A) Both statements are true.
• B) The first statement is true; the second is false.
• C) The first statement is false; the second is true.
• D) Both statements are false.

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Definitions:

Atom

The basic unit of a chemical element, consisting of a nucleus of protons and neutrons, with electrons orbiting the nucleus.

Molecule

The smallest particle in a chemical element or compound that has the chemical properties of that element or compound, consisting of two or more atoms bonded together.

Constitutional Isomer

Molecules with the same molecular formula but different arrangements of atoms in space.

Empirical Formula

The simplest positive integer ratio of atoms present in a compound, not indicating the actual bonding of the atoms.