When blood glucose is low, the pancreas releases glucagon, a peptide hormone which stimulates the liver to produce and excrete glucose. Binding of the hormone to its receptor triggers a "second messenger" cascade pathway that results in a change in the concentration or activity of many enzymes and signaling intermediates. The activity of some pathway enzymes is altered, as is the direction of net flow through some pathways. How does glucagon stimulation affect the concentration or activity of the given signaling intermediates and enzymes?
Added by Josep J.
Step 1
Glucagon binds to its receptor on the liver cell membrane. Show more…
Show all steps
Your feedback will help us improve your experience
Adi S and 69 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
In the fasting and fed state glucagon and insulin are released from the pancreas respectively. Identify the effect of each of these hormones on the following enzyme activities (increase or decrease) or the substrates concentrations (increase or decrease) by checking the appropriate column.(22 points)
Supreeta N.
The hormone glucagon signifies the starved state, yet it inhibits glycolysis in the liver. How does this inhibition of an energy-production pathway benefit the organism?
Pahal S.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD