C2.1 Chemical Signalling

Front

A molecule that binds to a specific site on a target protein.

Back

Ligand

Front

The interaction between a ligand and its target protein.

Back

Ligand Binding

Front

Fluid outside the cells where signaling molecules are often found.

Back

Extracellular Fluid

Front

The process by which a chemical or physical signal is transmitted through a cell.

Back

Signal Transduction

Front

The reaction of a cell to a signal, often involving changes in gene expression.

Back

Cellular Response

Front

A structured community of bacterial cells enclosed in a self-produced polymeric matrix.

Back

Biofilm

Front

A system of stimuli and response correlated to population density.

Back

Quorum Sensing

Front

Chemical signals used in quorum sensing.

Back

Autoinducers

Front

Bacteria with a thick peptidoglycan layer in their cell wall.

Thick peptidoglycan, retains crystal violet → Purple Stain colour

Back

Gram-Positive

Front

Bacteria with a thin peptidoglycan layer and an outer membrane.

Thin peptidoglycan, loses crystal violet, retains safranin → Pink/red stain colour

Back

Gram-Negative