Air Consists of

question 33

Multiple Choice

Air consists of

• A)a mixture of gases that behaves as if it were a single gas.
• B)mostly carbon dioxide and water vapor.
• C)gases that are not well mixed.
• D)oxygen only.

---

Definitions:

Receptor Molecules

Specialized proteins located on the surface of or within cells, which bind to specific substances, leading to a cellular response.

Specificity

The ability of a test or biological mechanism to accurately identify a particular substance or pathogen without cross-reacting with other substances.

Synapses

The junctions between neurons through which nerve impulses pass by diffusion of neurotransmitters across a gap.

Hyperpolarization

A change in a cell's membrane potential that makes it more negative, moving further from zero.