Define function of the iron uptake by cells, Biology

Assignment Help:

Define Function of the Iron Uptake by Cells?

Iron has several vital functions in the body. It serves as a carrier of oxygen to the tissues from the lungs by red blood cell haemoglobin, as a transport medium for electrons within cells, and as an integrated part of important enzyme systems in various tissues. The general classification of the reactions in which iron is involved includes:

  • Oxygen transport and storage
  • Electron transfer
  • Substrate oxidation- reduction

 

Several iron-containing enzymes, the cytochromes, have one haem group and one globin protein chain. These enzymes act as electron carriers within the cell and their structures do not permit reversible loading and unloading of oxygen. Their role in the oxidative metabolism is to transfer energy within the cell and specifically in the mitochondria. Other key functions for tlle iron-containing enzymes (e.g. cytochrome P450) include the synthesis of steroid hormones and bile acids; detoxification of foreign substances in the liver; and signal controlling in some neurotransmitters, such as the dopamine and serotonin systems in the brain. As a component of cytochromes and other enzymes of electron transport chain, it is critical for conversion of food into ATP. Iron-containing molecules ensure that macromolecules like carbohydrates and fats are oxidized to provide the energy necessary for all physiological processes and movements. Iron is a component of many other tissue enzymes required for immune system functioning. Non-haem iron proteins, as we know, are responsible for a wide range of functions such as enzymes methane mono-oxygenase (oxidizes methane to methanol) and ribonucleotide reductase (reduces ribose to deoxyribose; DNA biosynthesis).


Related Discussions:- Define function of the iron uptake by cells

Aortic valve replacement-types of surgery in ar, Aortic Valve Repla...

Aortic Valve Replacement :  Technique: Surgical technique is not much different from what has already been described for aortic stenosis. Care must be taken to avoid VF

What is lyophobic, What is lyophobic If the affinity of the dispersed p...

What is lyophobic If the affinity of the dispersed phase to go into or to remain in colloidal dispersion is slight, the dispersed phase is said to be lyophobic (solvent repelli

What are the typical features of mammals, What are the typical features of ...

What are the typical features of mammals? The typical features of mammals are: body (more or less) covered with hair; presence of the diaphragm muscle (that divides the thorax

Define heart diseases - excessive fat intake, Define Heart Diseases - exces...

Define Heart Diseases - excessive fat intake? Heart diseases show strong links to fat and cholesterol intake. Foods rich in cholesterol are of animal origin and given in Table.

Define b-complex vitamins required for elderly, Define B-Complex Vitamins r...

Define B-Complex Vitamins required for elderly? B-Complex Vitamins: Various B complex vitamins especially B folic acid, B 6 ,  and riboflavin are found to affect favourably t

Define use of soy protein concentrates in bakery products, Define Use of So...

Define Use of Soy Protein Concentrates in Bakery Products? Unlesss higher protein fortification levels are necessary, there is no special reason for using soy protein concentra

Enzyme specificity, Enzyme Specificity Enzymes play a critical role wit...

Enzyme Specificity Enzymes play a critical role within biological systems through helping reactions to occur beneath the commonly mild conditions in that organisms live. Enzyme

Infective endocarditis, Infective Endocarditis   It  is a term used to ...

Infective Endocarditis   It  is a term used to include subacute bacterial endocarditis as well as infection caused by viruses  and fungi.  The causative organisms responsibl

Determine the groups of soil organisms, Determine the groups of soil organi...

Determine the groups of soil organisms The soil organisms are classified into two broad groups viz. soil flora (related to plants) and soil fauna (related to animals) which ar

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd