Navigation Links
Cytoplasm


Cytoplasm is the colloidal, semi-fluid matter contained within the cell's plasma membrane, in which organelles are suspended. In contrast to the protoplasm, the cytoplasm does not include the cell nucleus, the interior of which is made up of nucleoplasm.

Components of the cytoplasm

The aqueous component of the cytoplasm (making up 80 percent of it) is composed of ions and soluble macromolecules like enzymes, carbohydrates, different salts and proteins, as well as a great proportion of ARN. The cytoplasm's watery component is also known as hyaloplasm .

The watery component can be more or less gel-like or liquid depending on the milieu's conditions and the activity phases of the cell. In the first case, it is named cytogel and is a viscid solid mass. In the second case, called cytosol, is a liquid in movement. In general, margin regions of the cell are gel-like and the cell's interior is liquid.

The insoluble constituents of the cytoplasm are organelles (such as the mitochondria, the chloroplast, lysosomes, peroxysomes, ribosomes), several vacuoles, cytoskeletons as well as complex membrane structures (e.g. endoplasmic reticulums or the golgi apparatus).

Differences between animal and vegetal cytoplasm

While all cells possess a cytoplasm, cells from different biological domains can differ widely in the characteristics of their cytoplasms. In the animal kingdom, cytoplasm occupies nearly half the cell's volume while in vegetal cells, the cytoplasm occupies much less space because of the presences of vacuoles.

Function

The cytoplasm plays a mechanical role, i.e. to maintain the shape, the consistency of the cell and to provide suspension to the organelles. It is also a storage place for chemical substances indispensable to life. Vital metabolic reactions take place here, for example anaerobic glycolysis and proteic synthesis.

See also : microtubules, vesicle


'"/>


(Date:3/24/2015)... Fla. , March 24, 2015   ... management solutions, today announced that its U.are.U ® ... accessory retailer Goorin Bros . to achieve ... biometrics-based solution secures access to the POS terminal, ... increased risk of data breaches. ...
(Date:3/23/2015)... , March 23, 2015   HOYOS Labs ... management company, today announced that the Company will demonstrate ... both enterprise and consumers at Connect:ID on March 23 ... HOYOS Labs will highlight the IEEE Biometric Open ... ; and enterprise access control system. BOPS was ...
(Date:3/23/2015)... , Mar. 23, 2015 NXT-ID, Inc. (NASDAQ: NXTD ... on the growing mobile commerce market, announces its biometric payment ... campaign on CNBC television starting March 30 th . ... airing in New York markets. ... "We are excited about our new ad campaign following the ...
Breaking Biology News(10 mins):Crossmatch Fingerprint Readers Help Retailer Prevent Data Breaches at Point-of-Sale 2HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 2HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 3NXT-ID's Wocket Smart Wallet to Launch New CNBC Regional TV Ad Campaign 2NXT-ID's Wocket Smart Wallet to Launch New CNBC Regional TV Ad Campaign 3
... Cancer Research Center have, for the first time, induced ... achievement, the first demonstration of "hibernation on demand" in ... treat cancer and prevent injury and death from insufficient ... in essence, temporarily converting mice from warm-blooded to cold-blooded ...
... that are invisible by ordinary means of detection, according ... of Medicine in St. Louis. , The researchers demonstrated ... from the surrounding tissue by direct MRI scan--could be ... minutes after the mice were injected with the nanoparticles. ...
... the March issue of the journal Cancer Cell describes a ... to a new avenue for targeted cancer therapy. The compound, ... mouse model system and has low toxicity. The results of ... in phase I clinical trials. , Plk1 is a molecule ...
Cached Biology News:Buying Time Through Hibernation on Demand 2Buying Time Through Hibernation on Demand 3Buying Time Through Hibernation on Demand 4Buying Time Through Hibernation on Demand 5Nanoparticles offer new hope for detection and treatment 2Nanoparticles offer new hope for detection and treatment 3New drug shows promise as powerful anticancer agent 2
Other biology definitionOther Tags