What is passive transport, Biology

Assignment Help:

What is Passive Transport?

Passive Transport:  Specialized proteins called permeases also move specific substances across the cell membrane in a process called carrier transport. If these molecules function without requiring chemical energy, the passive transport is called facilitated diffusion. Substances cross the cell membrane in the same direction as they would by diffusion.

Another passive transport mechanism consists of gated channels, proteins that allow certain substances to cross the cell membrane, either permanently or following a chemical or electrical stimulus. An example of passive transport: glucose enters red blood cells about 100 times faster than would be expected from simple diffusion. This process apparently does not require energy.

 


Related Discussions:- What is passive transport

Processing grains and oil seeds for animal feeding, Processing grains and o...

Processing grains and oil seeds for animal feeding Simple processing of grains such as grinding facilitates the digestion particularly in cattle and buffaloes. Fine grinding of

Lentic ecosystems, Lentic Ecosystems Lakes are inland, depressions co...

Lentic Ecosystems Lakes are inland, depressions containing standing water. They vary considerably in area and depth. The largest lake in the world, the lake Superior in North

How different are animal cells from plant cells, Q. How different are anima...

Q. How different are animal cells from plant cells? While plant cells are eukaryotic, photosynthetic, autotrophic and have chloroplasts and cell wall, the animal cells are hete

What are flagella and cilia, Q. What are flagella and cilia and how do thes...

Q. What are flagella and cilia and how do these structures acquire movement? What are some examples of flagellated and ciliated cells in humans? Flagella and Cilia are structur

Chlamydiosis-prevention and control, Prevention and control The organism i...

Prevention and control The organism is sensitive to penicillin, tetracycline and other broad-spectrum antibiotics. Newer generation drugs are being used for the treatment of affec

Explain the scanning electron microscope, Explain the Scanning Electron Mic...

Explain the Scanning Electron Microscope It can be used to observe intact cells or cell components directly. Then sections are not necessary. It is used for visualizing surface

Populations of predators and prey vary in predatism, Q. How do populations ...

Q. How do populations of predators and prey vary in predatism? Whenever a predator population enhance at the first moment the prey population tends to reduce. At a second momen

Gangrenous dermatitis (necrotic dermatitis), G a ngrenous dermatitis (nec...

G a ngrenous dermatitis (necrotic dermatitis) A bacterial condition in chickens caused by spores of Clostridium septicum , sometimes that of Cl. novyi / Cl. edematiens a

Define the skeletal muscle, Define the Skeletal muscle A. Binding of ca...

Define the Skeletal muscle A. Binding of calcium ion to its receptor site on the actin molecule blocks the attachment of the head of the tropomyosin molecule to its binding sit

Stratification of vegetation - qualitative characters, Stratification of Ve...

Stratification of Vegetation - Qualitative Characters Stratification of vegetation is another important feature of plant communities. There are different vertical strata in di

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