
Concept explainers
Name the membrane transport process by which glucose moves from the extracellular fluid into cells.

To determine: The name of membrane transport process that is involved in the transport of glucose from extracellular fluid to cells.
Introduction: Transportation of substance is essential to maintain the metabolic process in the body. Transport of materials can take place along the concentration gradient, which is called as a passive process. The transport of materials can also take place against the concentration gradient, which is called as an active process.
Explanation of Solution
The name of membrane transport process that is involved in the movement of glucose from extracellular fluid to the cells is glucose transporter (GLUT). GLUT transporter is the facilitated membrane transport protein. It is a type of uniporter, which facilitates the transport of glucose in one direction only. There are seven isoforms of GLUT transporter in the human body. GLUT-1 is the most common isoform, which is involved in the transport of glucose.
GLUT transporter consists of 10 membrane spanning helices. In this, both amino and carboxyl-terminals are exposed to the plasma membrane. When glucose concentration is higher, the transport of glucose takes place along the concentration gradient. However, when the concentration of glucose decreases, the transport of glucose takes place against the concentration gradient.
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