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

Explain about food processing and engineering, Explain about Food processin...

Explain about Food processing and engineering? Fundamental engineering concepts like momentum, heat and mass-transport systems; engineering aspects of food processing plant ope

Photophosphorylation, explain the role of cyclic photophosphorylation in p...

explain the role of cyclic photophosphorylation in photosynthesis

Define the nutrient requirements during trauma, Define the Nutrient Require...

Define the Nutrient Requirements during Trauma? Nutritional assessment of the trauma patient is done to determine energy and protein requirements. Basal energy requirements are

Explain about the adipose tissue - energy balance, Explain about the Adipos...

Explain about the Adipose tissue - energy balance? At this point, it will not be irrelevant to consider how exactly an increase in the fat depot takes place. For understanding

State in brief about the term - calcium and magnesium, State in brief about...

State in brief about the term - Calcium and Magnesium  Exchangeable forms of these ions are considered to be available nutrients. The concentration from extractant is found by

Determine the term - neuropsychology, Determine the term - Neuropsychology ...

Determine the term - Neuropsychology The neuropsychology of the various modalities and domains involves applications from the knowledge base concerning the domain or modality i

Determine the functions of human body system, Determine the function of hum...

Determine the function of human body system Human body has different systems to perform different functions. A system consists of organs to perform a particular set of function

Ecological adaptations in animals to desert environment, Ecological adaptat...

Ecological adaptations in animals to desert environment In response to scarcity of water, animats adcipt vario6s strategies to conserve or prevent loss of water. Most of the de

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