Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Absorption of Glucose
Let us first consider the absorption of glucose from the gut lumen. (Refer to LSE-01, Units 7 and 8). The molecule involved in absorption of glucose is known as cotransporter because it couples the transport of a glucose molecule with that of a sodium ion. The energy needed is provided by the movement of sodium ion along its gradient. The cotransporter enables cells lining the lumen of intestine to absorb even quite small traces of glucose from food even though the epithelial cells may already have high concentrations of glucose inside them. Once inside the cell, the sodium ion is pumped out by ATP energised active transport and the glucose molecule is transferred to the blood stream through another transporter molecule, Glu T2, along its concentration gradient. Glu T2 transports glucose in proportion to the sugar concentration present in the blood. If more glucose is present in the blood, transport is slowed and if glucose content of blood is low then transport is accelerated.
Figure: Suggested mechanism for absorption of glucose. Na+ and glucose are transported together through carrier molecule or cotransporter located in the membrane. Inside the cell, sodium moves out by ATP pump and glucose is taken by a transporter molecule to the blood.
Experimental evidence shows that at least 4 transport processes for amino acids occur in the mammalian gut. Two for neutral amino acids, one for basic and one for acidic amino acid. Another separate transport system exists for dipeptides and tripeptides. Once inside the cell, these breakdown into constituent amino acids by intracellular peptidases. The sugar and amino acids reach the circulatory system from where similar mechanisms use the sodium gradient to transport amino acids and - glucose to the various tissues of the body.
What is scientific investigation?
IS Neuron B in the frog central nervous system Consider Neuron B in the frog central nervous system whose plasma membrane has a previously unknown channel that is selectly cond
Explain some Precautions for Preparation of Chloride Buffers? 1. Glass electrodes should always be before and after measuring pH with a tissue paper. 2. The pipettes should
Q. Investigation of aortic regurgitation by Surgical Therapy? The recommendation for Aortic valve replacement is only for those patients with Severe AR. If patients with mild A
Q. What are the cells responsible for the production of antibodies? The cells that produce antibodies that is the cells of the humoral immune system are the B lymphocytes (B ce
Hypothesis: The spelling of hypothesis when written as "hypotheses" indicate plural. The hypothesis is a statement or declaration of the expected outcome of a research st
Why can it be said that the enzymatic action is highly specific? The enzymatic action is highly specific because only exact substrates of one enzyme bind to the activation cent
Q. What happens when the oxygen supply is inadequate to maintain aerobic cellular respiration during muscle exercise? If oxygen from myoglobin or hemoglobin is not enough for t
The vascular tone increases as the arterial size decreases. The tone at any time reflects the effects of excitory and inhibitory pathways. Neurotransmitters, physical forces like s
Describe the Applications of vitamin b1 The steadily increasing consumption of white flours (insufficiently ground and thus low in vitamin content) by large sections of the po
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd