Explain the term active transport, Biology

Explain the term active transport?

Active Transport :  At intervals, protein assemblies involved in selective, or active transport of materials are inserted into the cell membrane. These specialized proteins use chemical energy to alter their chemical structure to pump molecules of dissolved substances into or out of the cell, from an area of low concentration of solute to a higher concentration, opposing the action of diffusion.

The part of the molecule to which the transported substance attaches is called the binding site. An example of active transport is the sodium-potassium pump, which is responsible for carrying electrical impulses down nerve cells, through contracting muscles, and in other control processes in cells. This process will be described more fully later.

 

 

Posted Date: 4/29/2013 5:52:13 AM | Location : United States







Related Discussions:- Explain the term active transport, Assignment Help, Ask Question on Explain the term active transport, Get Answer, Expert's Help, Explain the term active transport Discussions

Write discussion on Explain the term active transport
Your posts are moderated
Related Questions
Define The figure of 8 and Mattress suturing techniques The figure of 8:  is placed similarly to the simple loop on the buccal aspect; however, on the lingual aspect, the needl

Breeding of crops with high levels of minerals, vitamins and proteins is called: 1. Somatic hybridisation 2. Biofortification 3. Biomagnification 4. Micropropagation

Which terrestrial vertebrate group is extremely rare in deserts? The Amphibians are terrestrial vertebrates very rare in desert environments (although there are a few species a

Q. What are the main phases and clinical manifestations of schistosomiasis? The Schistosomiasis has acute and chronic phases and Days after the infection the cercarial dermatit


Q. What are the respective functions of the separation of homologous chromosomes and of the separation of alike chromatids in meiosis? The separation of homologous chromosomes

The allele that causes albinism (p) is recessive to the allele for normal pigmentation (P). A normal woman whose father is an albino marries an albino man whose parents are both no

What is the significance of the -R group (variable radical) in an amino acid molecule? The -R group, also known as a lateral chain, is the variable part of the amino acid molec

In a test cross: A.alleles of two genes is always involved. B.One parent must be homozygous recessive C.the physical manifestation of a trait can be deterimined. D.both A and C are

What is the production of RNA called and what is the enzyme that catalyzes the process? The making of RNA from information included in DNA is called transcription. The enzyme t