Cell Signaling - Amoeba Sisters

Most cell receptors are what type of molecules?

• Lipids

• Carbohydrates

• Nucleic Acids

• Proteins

All living things are made of cells.

• True

• False

Signals are sent between the CELLS of a multicellular organism.  They use these signals to...

• share energy

• communicate

What is the ligand?

• The receptor molecule

• The signaling molecule

• A monomer.

Ligands bind to the...

• Receptor molecules on the surface of other cells

• Organelles inside a cell

Reception occurs when

• a signalling molecule binds to a receptor.

• the signal is amplified.

• a ligand is destroyed.

• water is released.

The signal molecule (ligand) has a specific FIT with its receptor.  This means that it can only bind to one type of receptor, and not others.

• True

• False

What typically happens during transduction?

• The signal molecule changes shape

• The receptor molecule changes shape

INTRAcellular signaling Is.... 

• Signaling occurring within one cell

• Signaling occurring between cells

INTERcellular signaling is...

• Signaling occuring within one cell

• Signaling occurring between cells