Signal transduction is part of a cell\'s response to an external signal. although signal transduction pathways can differ in their details, there are some common elements. determine which of the statements below accurately describe signal transduction pathways. select the six correct statements.

The accurate statements to the signal transduction pathways are as follows:

1. A receptor changes conformation upon attachment, conducting a signal across the cell membrane.

2. A second messenger may carry a signal from the cell membrane to an organelle.

3. Signal transduction cascades, often involving protein kinases, amplify a signal intracellularly.

4. A receptor may pass on a signal by associating with another protein or by functioning as an enzyme.

5. A ligand, like hormone, combines with a specific cell surface receptor on a target cell.

6. Phosphatase eradicate phosphoryl groups from polypeptides, monitoring the response of the cell.

this protocol describes a detailed procedure for intracellular flow cytometry staining.