Search results
Results from the WOW.Com Content Network
Hence reabsorption of glucose is dependent upon the existing sodium gradient which is generated through the active functioning of the Na + /K +-ATPase. As the cotransport of glucose with sodium from the lumen does not directly require ATP hydrolysis but depends upon the action of the ATPase, this is described as secondary active transport.
In plants, sucrose transport is distributed throughout the plant by the proton-pump where the pump creates a gradient of protons so that there are many more on one side of the membrane than the other. As the protons diffuse back across the membrane, the free energy liberated by this diffusion is used to co-transport sucrose. In mammals, glucose ...
Plants synthesize carbohydrates from carbon dioxide and water through photosynthesis, allowing them to store energy absorbed from sunlight internally. [2] When animals and fungi consume plants, they use cellular respiration to break down these stored carbohydrates to make energy available to cells. [ 2 ]
Active transport often takes place in the internal lining of the small intestine. Plants need to absorb mineral salts from the soil or other sources, but these salts exist in very dilute solution. Active transport enables these cells to take up salts from this dilute solution against the direction of the concentration gradient.
excretion = (filtration + secretion) - reabsorption; The proximal convoluted tubule of the nephron has protein channels that reabsorb glucose, and others that secrete para-aminohippuric acid (PAH). However, its ability to do so is proportionate to the channel proteins available for the transport. [citation needed]
[2] [3] SGLT1, encoded by the SLC5A1 gene, is primarily expressed in the late proximal tubule (S3 segment) and accounts for the remaining 3% of glucose reabsorption. [2] [3] In addition to SGLT1 and SGLT2, there are 10 other members in the human protein family SLC5A. [4] SLC5A4, also known as SGLT3, is a member of the sodium-glucose ...
Alpha-glucosidase inhibitors (AGIs) are oral anti-diabetic drugs used for diabetes mellitus type 2 that work by preventing the digestion of carbohydrates (such as starch and table sugar). They are found in raw plants/herbs such as cinnamon and bacteria (containing the inhibitor acarbose ).
Paracellular transport also has the benefit that absorption rate is matched to load because it has no transporters that can be saturated. In most mammals, intestinal absorption of nutrients is thought to be dominated by transcellular transport, e.g., glucose is primarily absorbed via the SGLT1 transporter and other glucose transporters .