14. Cell Signaling
Integration of Multiple Signaling Pathways
Multiple Choice
When insulin binds to insulin receptors what happens to glucose?
A
Glucose is brought into the cell
B
Glucose is created by the cell
C
Glucose is exported into the bloodstream
D
Glucose is degraded
Verified step by step guidance1
Understand the role of insulin: Insulin is a hormone that helps regulate blood glucose levels by facilitating the uptake of glucose into cells.
Identify the function of insulin receptors: When insulin binds to its receptors on the cell surface, it triggers a signaling cascade inside the cell.
Explore the signaling pathway: The binding of insulin to its receptor activates a series of intracellular events, including the activation of proteins like IRS (Insulin Receptor Substrate) and PI3K (Phosphoinositide 3-kinase).
Consider the effect on glucose transporters: The signaling cascade leads to the translocation of glucose transporter proteins, such as GLUT4, to the cell membrane.
Conclude the process: The presence of GLUT4 on the cell membrane allows glucose to be transported from the bloodstream into the cell, thereby lowering blood glucose levels.
