When cells respond to an extra cellular signal , they convert the incoming information from one form to another. This process is called signal
a. induction
b. interference
c. transduction
d. transformation

The process is called signal transduction

Explanation:

Signal transduction entails the binding of a ligand or extracellular signal to a receptor and this gives rise to a biochemical cascade of reactions, interactions forming networks and this elicit cellular responses. These responses may include, post translational modifications, changes in gene transcription and translation.

The process is called signal transduction.

Explanation:

Signal transduction is the process by which chemical or physical signal is transfered from outside of the cell to the interior of the cell thereby transforming the information from one form to another form to ensure adequate response. Signal transduction depend on receptors protein.

There are three stages of signal transduction and they are;

1. Receptor or protein present at the cell surface detect signals.

2. Transduction, change in receptors enhance changes in the cell.

3. Response, the cell respond to the signal.

Because velocity has magnitude and direction, speed is not a vector quantity since it only has magnitude

For example, if a car is moving backwards with a speed of 40m/s

Your velocity is - 40m/s

Speed is 40m/s