zIFBoards - Free Forum Hosting
Join the millions that use us for their forum communities. Create your own forum today.

Learn More · Register Now
Welcome to Did You Know?

Name:   Password:


 

 Endocytosis, DYK Fact #213
Ebudae
Posted: 09:22 Monday 23 April 2007


The Enlightenment


Group: Admin
Posts: 933
Member No.: 1
Joined: 02 Jan 2007



Last night, before going to bed, I watched a biology programme I had videoed from the BBC Learning Zone a long time ago. It was a programme about endocytosis. Yearning.gif

Did you know? The membrane of a cell is littered with proteins that allow the passage of small particles into or out of the cell, but larger particles have to enter the cell by endocytosis. This involves the cell membrane wrapping around a particle, forming a vesicle which is “pinched off” (I believe that is the technical term tongue.gif) from the membrane so that the particle is completely enclosed within the cytoplasm. Of course, only particles that the cell recognizes as “friendly” are allowed endocytotic entry into it. Unfortunately, some viruses – such as the Semliki Forest virus – can fool the cell into thinking they are “friends” and gain entry into it by endocytosis. Once inside the cell, the such a virus will embark on its destructive pathway, replicating and eventually killing the host cell to release more viruses.



--------------------
Ebudæ
Top
Athene_noctua
Posted: 13:20 Monday 23 April 2007


Beyond Infinity


Group: Admin
Posts: 2 192
Member No.: 2
Joined: 03 Jan 2007



Did you know? Phagocytosis and pinocytosis are forms of endocytosis.



--------------------
Top
Olinguito
Posted: 11:50 Sunday 01 March 2015


Nirvana


Group: Admin
Posts: 1 341
Member No.: 219
Joined: 21 Apr 2014



Did you know? The opposite of endocytosis is exocytosis – whereby material is discharged from a cell.

I have just read about phagocytosis and pinocytosis in Section 4.4, MOVEMENT IN AND OUT OF CELLS, of Chapter 4, “Cellular Organization”, of Part I, LEVELS OF ORGANIZATION, of Understanding Biology for Advanced Level by Glenn Toole and Susan Toole.



--------------------
Bassaricyon neblina
Top
shyharald
Posted: 12:31 Saturday 05 December 2015


Medieval Times


Group: Moderators
Posts: 114
Member No.: 81
Joined: 02 Nov 2008



Did you know? In plant cells, Golgi vesicles are involved in the synthesis and transport of polysaccharides and glycoproteins, fusing with the plasmalemma and discharging their contents by exocytosis.

I have just read about the role of Golgi bodies in plant cells in Chapter 6, ENDOPLASMIC RETICULUM, GOLGI COMPLEXES AND SECRETORY VESICLES, of Biochemistry and Structure of Cell Organelles by Rober A. Reid and Rachel M. Leech.

Top
Olinguito
Posted: 08:16 Sunday 06 December 2015


Nirvana


Group: Admin
Posts: 1 341
Member No.: 219
Joined: 21 Apr 2014



Did you know? Exocytosis, which can be induced by certain hormones, occurs in animal cells as well as plant cells.


--------------------
Bassaricyon neblina
Top
shyharald
Posted: 17:42 Thursday 31 December 2015


Medieval Times


Group: Moderators
Posts: 114
Member No.: 81
Joined: 02 Nov 2008



Did you know? Phagocytosis – the endocytosis of particulate material – occurs in the Amoeba.

I am in the process of reading about DEGRADATION OF FOREIGN MATERIAL in the section on lysosome function in Chapter 7, LYSOSOMES, of Biochemistry and Structure of Cell Organelles by Rober A. Reid and Rachel M. Leech.

Top
Olinguito
Posted: 17:55 Thursday 31 December 2015


Nirvana


Group: Admin
Posts: 1 341
Member No.: 219
Joined: 21 Apr 2014



Did you know? Certain cells in the digestive tracts of lower animals depend on phagocytosis for the major part of their food supply.


--------------------
Bassaricyon neblina
Top
shyharald
Posted: 18:08 Thursday 31 December 2015


Medieval Times


Group: Moderators
Posts: 114
Member No.: 81
Joined: 02 Nov 2008



Did you know? It is by phagocytosis that polymorphonuclear leucocytes in blood deal with invading micro-organisms and macrophages in the reticuloendothelial systems of organs such as the liver and the spleen clear the blood of effete erythrocytes and tissue fragments.
Top
Olinguito
Posted: 18:12 Thursday 31 December 2015


Nirvana


Group: Admin
Posts: 1 341
Member No.: 219
Joined: 21 Apr 2014



Did you know? Pinocytosis is the endocytosis of soluble substances such as globular proteins.


--------------------
Bassaricyon neblina
Top
shyharald
Posted: 18:16 Thursday 31 December 2015


Medieval Times


Group: Moderators
Posts: 114
Member No.: 81
Joined: 02 Nov 2008



Did you know? Most proteins end up after pinocytosis in lysosomes.
Top
Olinguito
Posted: 18:25 Thursday 31 December 2015


Nirvana


Group: Admin
Posts: 1 341
Member No.: 219
Joined: 21 Apr 2014



Did you know? The functions of primary lysosomes include breakdown of foreign material, degradation of transport proteins and extracellular material, and digestion of effete organelles and excess macromolecules.


--------------------
Bassaricyon neblina
Top
shyharald
Posted: 15:04 Friday 01 January 2016


Medieval Times


Group: Moderators
Posts: 114
Member No.: 81
Joined: 02 Nov 2008



Did you know? Lysosomes can digest mitochondria, ribosomes, peroxisomes, glycogen granules and other intracellular structures.

I have just read about DEGRADATION OF INTERNALLY PRODUCED MATERIAL.

Top
Olinguito
Posted: 15:05 Friday 01 January 2016


Nirvana


Group: Admin
Posts: 1 341
Member No.: 219
Joined: 21 Apr 2014



Did you know? Autophagy is when this happens to an apparently healthy organelle.


--------------------
Bassaricyon neblina
Top
0 User(s) are reading this topic (0 Guests and 0 Anonymous Users)
0 Members:
« Next Oldest | Human Biology & Medical Sciences | Next Newest »
zIFBoards - Free Forum Hosting
Free Forums. Reliable service with over 8 years of experience.
Learn More · Register for Free

Topic Options



Hosted for free by zIFBoards* (Terms of Use: Updated 2/10/2010) | Powered by Invision Power Board v1.3 Final © 2003 IPS, Inc.
Page creation time: 0.3310 seconds | Archive