A first messenger travels in the bloodstream, binds to a cell membrane receptor, and causes the formation of a second messenger within the cell (e.g., a hormone). A second messenger triggers an enzyme cascade within the cell, leading to the intended response (e.g., cAMP).
Un primer mensajero es una molécula (como una hormona) que viaja por el torrente sanguíneo y se une a un receptor en la membrana celular, provocando la formación de un segundo mensajero. Un segundo mensajero desencadena una cascada de enzimas dentro de la célula para producir la respuesta deseada (ej. cAMP).
| Front | Define first messenger & second messenger. |
|---|---|
| Back | First messenger - travels through bloodstream, binds to receptor on CSM & causes formation of second messenger within cell (hormone) Second messenger - triggers enzyme cascade within cell, causing the intended response (cAMP) |
Learn with these flashcards. Click next, previous, or up to navigate to more flashcards for this subject.
Next card: Types soluble state hormone identify adrenaline water lipid
Previous card: Blood muscle fight flight heart increase list physiological
Up to card list: A-Level Biology OCR A