Topic 4.2 - Intro to signal transduction

What is the first step of signal transduction?

• Reception

• Transduction

• Response

What is a signaling molecule called?

• Activator

• Repressor

• Ligand

• Enhancer

True or False.The ligand travels through the signal transduction path.

• True

• False

True or false. All cells respond to the same ligand with the same response.​

• True

• False

Which is a secondary messenger?

• Ligand

• Ca²⁺

• Hormone

• ATP

What is the signaling molecule & where does it bind?​

• Substrate; Enzyme​

• Ligand; Enzyme​

• Substrate; Receptor​

• Ligand; Receptor​

Which of the following act as secondary messengers?​

• ATP and Ca²⁺

• Ca²⁺ and cAMP

• cAMP and ligand

• Ligand and ATP​

Different cells respond to the signal in the same way.​

• False

• True

Calcium is stored in the smooth ER and allows for muscular contractions. How is calcium released from the smooth ER?​

• Active transport

• Ion channel​

• Simple diffusion​

• Gated ion channel​