The Effect Of Active Transport On The Movement Of Glucose Essay

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The Effect of Active Transport on the Movement of Glucose Against the Concentration Gradient within the Small Intestine of a Rat
Introduction
The movement of substances across the cell membrane occurs in many ways, including transport by carrier proteins, also known as active transport (Barman et al. 1986). Active transport involves the movement of molecules through the cell membrane against a concentration gradient with the help of a carrier protein utilizing ATP energy. (Barman et al. 1986). This differs from processes like diffusion where the molecules or ions do not move against their concentration gradient. The process of active transport results in the accumulation of ions or molecules either inside or outside of the cell in an area of higher concentration (Barman et al. 1986). An example of this can be found in the small intestine where monosaccharides like glucose are absorbed into the intestinal wall via active transport (Barman et al. 1986). The sugars absorbed in the intestinal tract will become the energy needed to fuel the reactions necessary for survival. The main function of the small intestine is to absorb all of the nutrients necessary to sustain cell function in an organism. It is divided into three sections: the duodenum, the jejunum, and the ileum. The duodenum is the first section in which solutes pass through for absorption and the ileum is the final place for absorption in the small intestine. The inner surface of the small intestine appears to be…

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