answer 3
A. It binds to receptors on the surface of the cell membrane, which activates enzymes inside the cell. Explanation: Peptide hormones being hydrophilic cannot cross the plasma membrane of the cell, which is largely composed of phospholipids, so in order to show their impact and participate in the signal transduction pathway, they are required to first d interact with cell surface receptors. Its interaction with the receptor activates several intracellular enzymes in the cell, which ultimately leads to the physiological response within the cell. GPCR is the best example of a cell surface receptor to which hormones such as epinephrine and no epinephrine bind. They bind to receptors present on the surface of the cell membrane, which activate the enzymes present inside the cell. Contrary to this, hydrophobic steroid hormones can directly cross the cell membrane and bind to intracellular receptors to show their impact.
answer 2
“It binds to receptors on the surface of the cell membrane, which activates enzymes inside the cell” is the only event that then occurs when a peptide hormone reaches its target cell. The correct option out of all the options given in the question is the first option or option “A”.
answer 4
It binds to receptors present on the surface of the cell membrane, which activates the enzymes present inside the cell. It then crosses the cell membrane and binds to a receptor protein present in the cytoplasm.
It transmits the signal to secondary messengers inside the cell, which activate receptors on the cell membrane.
Answer 5
The two most important messengers are cAMP and inositol triphosphate. Cyclic AMP: ATP is converted into cAMP after a series of reactions in the plasma membrane after the hormone attaches to the membrane. cAMP relays the signal from the membrane to the cytoplasmic metabolic machinery. Inositol Triphosphate: Involves the use of Ca+2 which regulates the activity of cellular proteins. I hope this helps you
Answer 1
It binds to receptors present on the surface of the cell membrane, which activates the enzymes present inside the cell.