Question

Name the process that link reception of cell signals to responses within the cell.

• A. A signal transduction pathway.
• B. Protein synthesis by ribosomes.
• C. Budding of transport vesicles from the Golgi.
• D. Active transport of the signal into the cell.

Answer 1

The correct option is A A signal transduction pathway.

Signal-transduction pathways are cascades that mediate the sensing and processing of stimuli. These molecular circuits detect, amplify and integrate diverse external signals to generate responses such as changes in enzyme activity, gene expression or ion-channel activity.
Membrane receptors transfer information from the environment to the cell's interior. Second messengers relay information from the receptor-ligand complex. Protein phosphorylation is a common means of information transfer after which the signal is terminated.