ANATOMY

GENERAL ANATOMY

ENDOCRINE SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which one of the following is a possible effect of developing a mutation on the cAMP secondary messenger on the functions of the target cell?
A
The hormone will not bind to its receptor
B
The nucleus will not produce a new enzyme
C
The signal of the hormone will not be carried to inside of the cell
D
A mutated enzyme will be made by the cell
Explanation: 

Detailed explanation-1: -Adenosine 3′, 5′-cyclic monophosphate (cAMP) is a nucleotide that acts as a key second messenger in numerous signal transduction pathways. cAMP regulates various cellular functions, including cell growth and differentiation, gene transcription and protein expression.

Detailed explanation-2: -Some of the hormones that achieve their effects through cAMP as a second messenger: adrenaline. glucagon. luteinizing hormone (LH)

Detailed explanation-3: -The second messenger is the mechanism of the action of hydrophilic hormones with receptors in the target cells. The receptors for hydrophilic hormones are present on the plasma membrane of the target cells. The first messengers interact with receptors on cell membranes which form the Hormone-Receptor Complex.

Detailed explanation-4: -The amino acid-derived hormones epinephrine and norepinephrine bind to beta-adrenergic receptors on the plasma membrane of cells. Hormone binding to receptor activates a G-protein, which in turn activates adenylyl cyclase, converting ATP to cAMP. cAMP is a second messenger that mediates a cell-specific response.

There is 1 question to complete.