Transport across the Cell Membrane / Plasma Membrane | Active and Passive Transport

Transport across cell membrane is of two major types; active transport and passive transport.

PASSIVE TRANSPORT:
In this transport, energy is not used and substances move along the concentration gradient from a higher concentration gradient towards a lower concentration gradient. It is further of two types; simple diffusion and facilitated diffusion.

Simple Diffusion:
In this transport, substances move along the concentration gradient directly through the cell membrane. Examples include oxygen, carbon dioxide, etc.

Facilitated/Carrier-Mediated Diffusion:
In this transport, substances move along the concentration gradient by using some carrier protein. This transport is also called carrier-mediated diffusion. Examples include movement of glucose into the muscles, etc.

ACTIVE TRANSPORT:
In this transport, energy is used and substances move against the concentration gradient from a lower concentration gradient towards a higher concentration gradient. It is further of two types; primary active transport and secondary active transport.

Primary Active Transport:
In this transport, energy is used directly from ATP to move substances against the concentration gradient. Example is Sodium-Potassium ATPase Pump in the cell membranes. These pumps use ATP energy to actively pump sodium outside the cell and potassium inside the cell.

Secondary Active Transport:
In this transport, one substance (which is usually sodium) moves along the concentration gradient. Energy of this movement is used to move another substance against the concentration gradient.

If both the substances move in the same direction, it is called "Co-Transport or Symport". For example, sodium-glucose co-transport.

If the substances move in the opposite directions, it is called "Counter-Transport or Antiport". For example, sodium-calcium counter-transport.
--------------------
If you understand Hindi / Urdu language, do SUBSCRIBE to my channel "Khan Time 2.0". Here is the link:
--------------------

--------------------
#Cell #CellMembrane #diffusion

[MedTimewithKhan]

If you understand Hindi / Urdu language, do SUBSCRIBE to my channel "Khan Time 2.0". Here is the link:

[bts_rollercosterlifepurplearmy]

Today I learnt two new things: co-transport and counter transport...

[neenoo]

I promise this is the first time Understand this lesson well😭omg thank you so much

[kasturibhogle]

Got a lot of help for my exam!! Thank you, 🌸🌼

[nawalosman]

Thanks sir you help me in subject physiology and I am understand well Allah's mercy and give forgivennes💓🙏

[happyprincess]

Very easy and smooth explanation !Thanks👍🏻

[maahinshoaib]

First time I'm able to understand the concept 😅👍👍👍👍👍

[mol_biologist]

Thank you so much for this video Sir :) Got a lot of help for my exam.

[zohazafar]

Amazing thank you so much for this video that guide me😊

[DrNawabDani]

Great Easy wording and knowledgeable vedio ❤❤

[blankselfish]

Very good explanation sir need more videos like this 😊

[EMMANUELMWAMBA-yzyh]

U just summarised what I was studying 😊

[sketchy]

And for active ...there are two forms....primary and secondary based on the type of energy consumed

[ritukadyan]

Really it's so fabulous❤ with clear nd smooth explanation... Thanks a lot Sir😊

[bujjima]

Amazing teaching sir. Easy to understand. Keep doing sir

[RahuluddinGandhy]

Thank you very much sir 😊. It was so simple for understand.

[dopamine]

Well-done sir thank you for more information ❤️

[nonstopmeenaji]

bohat accha i mean good knowledge of hap

[PakhiBerry]

Very nice video! Short and very well taught ..good for revision

[AditiSonekar]

Thanku so much sir.... easy way me explain Kiya apne🎉🎉🎉❤