Assignment Help - homework help

  Absorption of carbohydrates

Absorption of carbohydrates:

Just only monosaccharides can be absorbed through the intestinal mucosa. Some disaccharides can be pinocytosed and hydrolyzed to monosaccharides through disaccharidases. The rate of absorption of the monosaccharides is in the subsequent order:

Galactose > Glucose > Fructose > Mannose > Xylose > Arabinose

Mechanism of absorption:

1. Simple Diffusion:

Firstly, while the concentration of glucose in the intestinal lumen is high, through simple diffusion it crosses the membrane.

2. Active Transport:

To get faster the absorption process, active transport mechanisms are included. Absorption of glucose is a secondary active transport mechanism that involves ATP hydrolysis indirectly.

The steps included in the transport of glucose are:

(i) One molecule of glucose and Na+ binds to the transporter.

(ii) Binding of sodium and glucose makes a conformational change in the transporter.

786_glucose absorption.jpg

 

                                                           Diagram: Model of glucose absorption

(iii) The conformational change directs to the delivery of sodium and glucose molecules to the intestinal cells.

(iv) Sodium is pumped out of the cell resultant in the net absorption of glucose molecule alone. Step (iv) requires energy that is derived by ATP hydrolysis.

Factors affecting rate of absorption:

1. If the intestinal mucosa is damaged, absorption rate is gets reduced.

2. Hormones such as adrenal cortex hormones, thyroid hormone, and pituitary hormones improve the absorption of carbohydrates.

3. Insulin has no influence in the absorption of glucose.

4. Pyrimidine and pantothenic acid deficiencies reduce the absorption.

5. Inherited enzyme deficiency states such as lactose intolerance decreases the absorption.

 

Latest technology based Biology Online Tutoring Assistance

Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in Absorption of carbohydrates homework help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Absorption of carbohydrates, project ideas and tutorials. We provide email based Absorption of carbohydrates homework help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Absorption of carbohydrates. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Biology homework help and assignment help services. They use their experience, as they have solved thousands of the Biology assignments, which may help you to solve your complex issues of Absorption of carbohydrates. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.
Home | Company Overview | Services | Discover Q&A | Sitemap | Contact Us | T & C | Refund Policy | Copyright Policy | Blog | Q&A | Directory

©TutorsGlobe All rights reserved 2022-2023.