The Shallow Rounded or Angular Depression Found on Tooth Surfaces

question 2

Multiple Choice

The shallow rounded or angular depression found on tooth surfaces is the ____________.

• A) buccal groove
• B) lingual groove
• C) fossa
• D) cingulum

---

Definitions:

Enzymes

Biological molecules that significantly speed up the rate of virtually all of the chemical reactions that take place within cells.

Tubules

Small tubes or tunnel-like structures found in various organs and tissues, involved in transport and filtration processes.

Nuclear Receptor

A type of intracellular protein that, upon binding to specific molecules, can regulate the expression of certain genes.

Membrane-bound Receptor

A protein molecule embedded in the cell membrane that receives chemical signals from outside the cell and, upon binding with a specific ligand, initiates a cellular response.