In heart cells,which one serves as a second m | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) Second messengers are signaling molecules that relay signals from receptors on the cell surface to target molecules inside the cell,thereby amplif

Vedclass · Accepted Answer

$cAMP$

Vedclass · Answer

(A) Second messengers are signaling molecules that relay signals from receptors on the cell surface to target molecules inside the cell,thereby amplifying the effect of the first messenger (hormone).$cAMP$ (Cyclic adenosine $3',5'$-monophosphate) is synthesized from $ATP$ by the enzyme adenylate cyclase. It acts as a second messenger for various physiological processes,including adrenaline-mediated glycogenolysis and the acceleration of heart muscle cell contraction.

In heart cells,which one serves as a second messenger speeding up muscle cell contraction in response to adrenaline?

Similar Questions

Statement $-I :$ Iodothyronines can cross the plasma membrane of a cell.
Statement $-II :$ Receptors of iodothyronines are present on the plasma membrane.

Who proposed the term '$pheromone$'?

$A:$ Hormones are non-nutrient chemicals.
$B:$ They act as intercellular messengers and are produced in trace amounts.

$A$ molecule that binds to a receptor and induces post-receptor events in a cell is called ...$A$... and a molecule that binds to the receptor and inhibits all post-receptor events is called ...$B$....

Which one of the following is $NOT$ a second messenger?

Vedclass Test Series

Exam Paper Generator

Online Exam Module