Transport of small molecules, Biology

Assignment Help:

The internal composition of the cell is maintained because the plasma membrane is selectively permeable to small molecules. A lot of biological molecules are unable to distribute by the phospholipid bilayer so the plasma membrane develops a barrier which blocks the free exchange of molecules between the cytoplasm and the external environment of the cell. Exact transport proteins carrier proteins and channel proteins then mediate the careful passage of small molecules across the membrane, permitting the cell to control the composition of its cytoplasm.

 


Related Discussions:- Transport of small molecules

Protozoa, What spices is protozoa

What spices is protozoa

Explain diabetes mellitus, Diabetes mellitm This anabolic hormone exert...

Diabetes mellitm This anabolic hormone exerts its action on key glycolytic  enzymes  thus  leading  to the conversion of glucose  to  pyruvate as explained under the regulation

Homeostasis, negative and positive feedback

negative and positive feedback

Man-made disasters- chemical disasters, Chemical disasters arise from harm...

Chemical disasters arise from harmful and potentially hazardous chemicals, which if released of misused can pose a threat to the environmental. Its range depends upon military and

Define drug effects on food intake - cause dry mouth, Define drug effects o...

Define drug effects on food intake - cause dry mouth? cause dry mouth (xerostomia) : Lack of saliva makes it difficult to masticate and swallow foods, especially those of a dry

Marek''s disease (md), M a r e k ' s disease (MD) It is a lymphop...

M a r e k ' s disease (MD) It is a lymphopoliferative disease of domestic chicken caused by a herpes virus. Of the known 3 serotypes of MDV, Serotype I includes all the o

Diversified animal group of the planet, Q. Which arthropod class is the mai...

Q. Which arthropod class is the mainly diversified animal group of the planet? How can this evolutionary success be explained? The insects are the animal group with most divers

Effects on aquatic organisms - water pollution, Effects on Aquatic Organism...

Effects on Aquatic Organisms - Water Pollution Toxic water pollutants such as metals, pesticides, insecticides and chemicals affect aquatic species directly whereas the non-t

Determine the food source for phosphorus, Determine the Food Source for Pho...

Determine the Food Source for Phosphorus? Phosphorus is widely distributed in food. Food phosphorus is a mixture of both organic and inorganic forms although the relative amoun

Explain several biological classification of animals, Explain several biolo...

Explain several biological classification of animals There are several biological classification of animals. There are: i) Phenetic Classification ii) Natural Classificati

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