Cell Communication and Feedback Mechanisms

Front

What is the 'cause' for something to happen?

Back

Stimulus

Front

What is an example of DIRECT cell communication?

Back

White blood cells bumping into each other sharing antigen info.

Front

What is a secondary messenger in cell communication?

Back

cAMP

Front

What do humans have for regulating body temperature and other variables?

Back

Set points

Front

How are ligands cell-specific?

Back

Each cell has different receptors to bind to the ligand.

Front

What is homeostasis?

Back

The maintenance of a stable internal environment in an organism.

Front

What role do receptors play in cell communication?

Back

Receptors bind to ligands and initiate a cellular response.

Front

What is the difference between positive and negative feedback mechanisms?

Back

Positive feedback amplifies a response, while negative feedback reduces it.

Front

What is a ligand?

Back

A molecule that binds to a receptor to initiate a cellular response.

Front

What is the function of a primary messenger?

Back

To transmit signals from the outside of a cell to the inside.