Review Quiz Please open this review in a slide show mode. Answer a question first, then go to the next slide for the correct answer.
Choose the correct order of events in a signal transduction pathway from beginning to end. the receptor activates a protein at the membrane->a first messenger binds to the cell-surface receptor->second messenger molecules are released->final target causes response second messenger molecules are released->final target causes response-> a first messenger binds to the cell-surface-> the receptor activates a protein at the membrane a first messenger binds to the cell-surface receptor-> the receptor activates a protein at the membrane-> second messenger molecules are released->final target causes response none of the above
Choose the correct order of events in a signal transduction pathway from beginning to end. the receptor activates a protein at the membrane->a first messenger binds to the cell-surface receptor->second messenger molecules are released->final target causes response second messenger molecules are released->final target causes response-> a first messenger binds to the cell-surface-> the receptor activates a protein at the membrane a first messenger binds to the cell-surface receptor-> the receptor activates a protein at the membrane-> second messenger molecules are released->final target causes response none of the above
Which of these is not a second messenger? CAMP DAG IP3 R2D2 CGMP
Which of these is not a second messenger? CAMP DAG IP3 R2D2 CGMP
A G protein becomes active when _____ It is bound by its neurotransmitter and transported to the nucleus It is phosphorylated by protein kinase as the result of a first messenger altering the shape of its receptor Ca2+ binds to a protein-linked receptor
A G protein becomes active when _____ It is bound by its neurotransmitter and transported to the nucleus It is phosphorylated by protein kinase as the result of a first messenger altering the shape of its receptor Ca2+ binds to a protein-linked receptor
A kinase is an enzyme that performs phosphorylation as a membrane channel active transport protein synthesis as an antibody
A kinase is an enzyme that performs phosphorylation as a membrane channel active transport protein synthesis as an antibody
An activated G protein can trigger the activation of adenyl cyclase the opening of calcium ion channels in the membrane the release of calcium ions from intracellular stores a fall in cAMP levels all of the answers are correct
An activated G protein can trigger the activation of adenyl cyclase the opening of calcium ion channels in the membrane the release of calcium ions from intracellular stores a fall in cAMP levels all of the answers are correct
Calcium ions serve as messengers, often in combination with the intracellular protein calcitonin calcitriol calmodulin calcium-binding globulin calcitropin
Calcium ions serve as messengers, often in combination with the intracellular protein calcitonin calcitriol calmodulin calcium-binding globulin calcitropin
Hormones can operate on the ________ level of organization. cellular tissue organ organismic all of the answers are correct
Hormones can operate on the ________ level of organization. cellular tissue organ organismic all of the answers are correct