Define about the absorption of iron, Biology

Define about the Absorption of Iron?

Before it can be absorbed, iron whether it is in the form of haem or non-haem must be released from the food matrices where it is bond with other constituents. Proteases (the enzyme) in the stomach and small intestine hydrolyze haem iron from the globin portion of haemoglobin or myoglobin. In the case of non-haem iron, gastric secretion including HCl and pepsin aid its release from food components.

Most non-haem iron is present in the ferric form which is reduced to ferrous form in the acidic environment of the stomach. However, as the ferrous iron passes into the small intestine (alkaline pH), some Fe2+ may be oxidized to become ferric iron. Following its liberation from food components, absorption' takes place. Like other minerals, iron is also absorbed in duodenum and upper jejunum.

Posted Date: 6/19/2013 5:38:26 AM | Location : United States

Related Discussions:- Define about the absorption of iron, Assignment Help, Ask Question on Define about the absorption of iron, Get Answer, Expert's Help, Define about the absorption of iron Discussions

Write discussion on Define about the absorption of iron
Your posts are moderated
Related Questions
Q. What is the function of keratin in the epidermis? The epidermis is the outer layer of the skin made of epithelial tissue in the epidermis there are keratin-secreting cells (

Q. Define Dissection of the Aorta ? The CXR may be abnormal in upto 80 per cent of patients. The abnormalities include: i) Widened mediastinum: This is defined as a mediast

Cholesterol is the precursor of the five major classes of steroid hormones.The synthesis of steroid hormones is initiated by the removal of a six-carbon unit  from  carbon  20  of

Explain the Analysis of Food Samples? Now, in this practical, we shall deal with the endogenous and exogeneous microorganisms which are present on the food as contaminants. We

two types of amoebas waste and how they get rid of them

Sludge treatment and disposal: most of the suspended solids and some of the dissolved organic solids, in a converted form, are separated from the main flow of the, in the form of

A volcanic eruption removes all plant life from a valley below the volcano Explain why succession following the eruption is likely to happen more quickly on the valley floor than o

What are the physical properties of Tear Film? Physical Properties of Tear Film: The tear film is a three-layered structure as given below: 1) Outermost Layer: Lipid Layer

Enumerate about the Luria Nebraska battery Luria Nebraska battery will be based on the assumption that the only connecting link between Luria and that procedure is the set of

Which one of the following is one of the characteristics of a biological community? 1.  Stratification 2. Natality 3. Mortality 4. Sex-ratio   Stratification