Types of passive transport, Biology

Assignment Help:

Simple diffusion

Only comparatively small uncharged or hydrophobic molecules (H2O, O2, and CO2, other gases, urea and ethanol)   cross   the lipid   bilayer   through simple   diffusion.   Membrane proteins are not included, so there is no specificity.  The molecule in aqueous solution on single side of the membrane dissolves into the lipid bilayer crosses it and then dissolves into the aqueous solution on the other side. The rate  of  diffusion  is  straight  proportional  to  the  concentration  gradient  of  the molecule across the membrane and the procedure is not saturable.

Facilitated diffusion

Not like simple diffusion the facilitated or carrier-mediated diffusion of a molecule across a biological membrane is dependent on specific integral membrane

356_22.png

                                        figure: Kinetics of (a) simple and (b) facilitated diffusion

 

 


Related Discussions:- Types of passive transport

Why are glucorticoids used in transplant patients, Why are glucorticoids us...

Why are glucorticoids used in transplant patients? Patients with transplanted organs are prone to host versus graft rejection as their own immune system tends to attack the gr

Use values of biodiversity, Despite its importance, determining the value o...

Despite its importance, determining the value or worth of biodiversity is complex and often a cause for debate. This is largely due to the fact that the worth placed on biodiversit

Effect of alcoholic beverage, Q. Why does the urinary volume increase when ...

Q. Why does the urinary volume increase when alcoholic beverages are ingested? Alcohol inhibits the ADH (antidiuretic hormone) secretion by the hypophysis and Low ADH reduces t

Etenobotany, Ethnobotany : This is the study of relationship between tribal...

Ethnobotany : This is the study of relationship between tribals and plants. Ethnobotany is from "ethnology" - study of culture or "botany" - study of plants. This is the scientific

Define the term epimerism, Define the Term Epimerism? In addition to D ...

Define the Term Epimerism? In addition to D and L isomerism sugars also exhibit epimerism. Hexoses that differ from each other as a result of variation of H and OH on carbons 2

Excretory system, extensive note on the excretory system of amphibian

extensive note on the excretory system of amphibian

What do you mean by insect control, Q. What do you mean by Insect control? ...

Q. What do you mean by Insect control? The insects can breed and hide in garbage and other places where there is availability of waste materials. The cockroach lives and breed

Disorders of upper respiratory tract, DISORDERS OF UPPER RESPIRATORY TRACT:...

DISORDERS OF UPPER RESPIRATORY TRACT: Common Cold: It is most frequent and most common infection in infants  and children. Common cold corresponds  to  acute nasopharyn

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