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

Rehabilitation phase for nutritional treatment -neuro trauma, Rehabilitatio...

Rehabilitation Phase for nutritional treatment - Neuro Trauma? Once the patient stabilizes and starts recovering, be sides nutritional replacement, there is a need to assess fu

Why is maternal milk important for baby, Q. Why is maternal milk important ...

Q. Why is maternal milk important for the immune protection of the baby? Besides being nutritionally important like maternal milk participates in the defense of the baby agains

Why is the occurrence of eyelids in amphibians, Why is the occurrence of ey...

Why is the occurrence of eyelids in amphibians in comparison to their absence in fishes and adaptation to terrestrial life? Eyelids associated to lacrimal glands protect and ke

Explain adverse effects of valacyclovir, Adverse Effects of Valacyclovir  ...

Adverse Effects of Valacyclovir  Valacyclovir is generally well tolerated; adverse effects are similar to those with acyclovir. GI disturbance, headache, rash, CNS effects such

Meat curing and smoking, Cu r in g and Smoking Meat curing refers to...

Cu r in g and Smoking Meat curing refers to the production of the characteristic thermally stable pink meat pigment and cured meat flavour by the action of sodium nitrite an

Smoking, SMOKIN G - It means to draw tobacco smoke into the mouth o...

SMOKIN G - It means to draw tobacco smoke into the mouth or lungs & exhale it via mouth, nostrils or both. Tobacco is obtained from Nicotiana tobacum & Nicotiana r

Adaptive mechanisms, The adaptive mechanisms may be short term ones which c...

The adaptive mechanisms may be short term ones which come into play within minutes or hours of the onset of myocardial dysfunction. These are: Frank-Starling Mechanism In

<-- that guy, thy does he look too excited in the illistration?

thy does he look too excited in the illistration?

Explain the term direct calorimetry, Explain the term Direct Calorimetry? ...

Explain the term Direct Calorimetry? Calorimetry refers to the measurement of the amount of heat evolved or absorbed in a chemical reaction, change of state, or formation of a

Isolation techniques, Differentiate between spread plating and streaking?

Differentiate between spread plating and streaking?

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