There Are _____ Openings into the Middle Ear

question 58

Multiple Choice

There are _____ openings into the middle ear.

• A) two
• B) three
• C) four
• D) five

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Definitions:

Diffusion

The movement of molecules from an area of higher concentration to an area of lower concentration, a fundamental process in biology and chemistry.

Negatively Charged

Having more electrons than protons, resulting in a net charge that is less than zero.

Protein Anions

Negatively charged proteins that play various roles in cellular functions, including maintaining cell structure and function.

Cell Membrane

The semipermeable membrane surrounding the cytoplasm of a cell, controlling the passage of substances in and out.