g Glucagon is a hormone that is released when the level of glucose in the blood is low. Glucagon uses a G protein signalling pathway to promote glycogenolysis. Put the steps of the signal transduction pathway in order after the release of glucagon into the blood before glycogen phosphorylase is activated leading to glycogenolysis. 1. Glucagon binds extracellularly to G protein-coupled receptor. 2. G protein releases GDP and binds GTP. 3. Activated G protein activates adenylyl cyclase. 4. Adenylate cyclase converts ATP to cAMP. 5. Cyclic AMP activates protein kinase A.

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.

c is the correct answer hope this !

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: