how does glucose gets a cell in a muscle
Answers
Answer:
Explanation:
There are many ways. Glucose is too large to dissolve through the membrane but there are integral proteins (termed GLUT ) that utilize glucose concentrations to move glucose in passively. Glucose in the GI tract can also enter the cell through secondary active transport where sodium gradient inside the cell drives a trans-membrane protein to import glucose with it. Red blood cells contain primarily GLUT 1, allowing them to absorb glucose from the bloodstream to make energy through glycolysis. Muscle and fat cells contain a lot of GLUT 4, a protein that is fond main in vesicles in cell cytoplasm. Insulin allows GLUT 4 vesicles to fuse with the cell membrane to increase the number of GLUT transporters found on the cell membrane, thus increasing glucose uptake into fat and muscle (as well as other ) cells.
Answer:
Glucose is an important fuel for contracting muscle, and normal glucose metabolism is vital for health. Glucose enters the muscle cell via facilitated diffusion through the GLUT4 glucose transporter which translocates from intracellular storage depots to the plasma membrane and T-tubules upon muscle contraction.