Question

Q2 describe the process of urine formation? Q1 how do unicellular organism excretes ? Q3 what is the fate of the gulucose that enters the nephrons?

Answer 1

Transcript of The process of glucose entering the cellphoto credit Nasa / Goddard Space Flight Center / Reto Stöckli Glucose and how it enters the cell Digestion Bibliography It all begins when food enters the body. Sugars are broken down into glucose. They prepare to go into the blood stream Glucose in the blood stream Insulin is a hormone produced in the pancreas. 
It causes cells in the liver, skeletal muscles, and fat tissues to take in glucose from the blood.
In the liver and skeletal muscles, glucose is stored as glycogon. Insulin Glucose travels through the bloodstream and prepares itself to enter cells. Insulin opens up the cell Insulin travels to the cell receptor. Here it sends a chain link reaction known as signal transduction cascade. The signal transduction cascade causes more glucose transport proteins (glut) to be present.Urine formation is a very sophisticated process that takes place in the kidneys. This important process provides a mechanism for the body to get rid of metabolic wastes and toxins, which can be deadly if allowed to accumulate in the body.

The kidneys have the very important responsibility for extracting toxins and other waste products from the blood.

Blood performs many crucial functions within the body and is largely responsible for sustaining health and life.

In addition to defending the body against diseases, blood is also responsible for transporting oxygen, hormones and other essential nutrients around the body.

It is, therefore, important that blood consistently has the correct chemical composition and is free of wastes and toxins, which can be dangerous to the body. Maintaining the correct volume and concentration of blood and removing wastes and toxins from it are essential functions of the kidneys. The kidneys are able to do this by converting unwanted blood plasma into urine and expelling it from the body.

- See more at: http://www.kidneychat.com/urine-formation.html#sthash.v8xQ6A8L.dpuf
These glut open the membrane and allow a passage for glucose to enter the cell. Glut Recap 1. CareClub, Diabetes. "How Can Diabetes Affect the Digestion?" DiabetesCareClub. DiabetesCareClub, 24 Apr. 2012. Web. 16 Oct. 2012. <http://www.diabetescareclub.com/learning/diabetes-health/how-can-diabetes-affect-the-digestion.html>.
2. Media, Demand. "About Diabetes." LIVESTRONG.COM. LiveStrong, 10 Oct. 2012. Web. 16 Oct. 2012. . 3. Times, Dreams. "Royalty Free Illustration: Glucose Molecule." Dreamstime. DreamsTime, 13 Mar. 2012. Web. 16 Oct. 2012. 11063520>.
4. Hoelzer, Mark. "Insulin and the Regulation of Glucose in the Blood." YouTube. YouTube, 08 Mar. 2011. Web. 16 Oct. 2012. <http://www.youtube.com/watch?v=OlHez8gwMgw>.
Full transcript