Insulin plays a key role in facilitating the body's absorption of glucose. After eating a meal, glucose levels rise in the blood. These rising levels stimulate the pancreas to secrete insulin, which binds to the extracellular domain on liver, muscle, and fat cell receptors. The insulin bound to the extracellular domain triggers the intracellular domain to phosphorylate itself, which in turn triggers a whole phosphorylation cascade including several different proteins. This cascade prompts glucose transport proteins originally in the cytoplasm to fuse into the cell membrane. Now that the transport proteins are on the membrane, they are accessible to the glucose on the outside that is flowing through the blood. Thus, the glucose is able to pass through the transport proteins and into the cell, where it can be utilized to provide energy by making ATP.
Comments
The sentence that has "which
The sentence that has "which in turn triggers a whole phosphorylation cascade" could be changed to sound a bit more scientific. Maybe instead of using the word "whole" you could say, "an entire" or even just leave it as "a phosphorylation cascade". The world "whole" sounds a bit casual/ambiguous for the paragraph. Other than that, great job! Very informative.
This paragraph is very
This paragraph is very informing and well written. The only suggestion I can make is to end the paragraph with a sentence that wraps the paragraph up and connevcts back to the main idea, or topic sentence.