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

Nervous system and nerve cells, Normal 0 false false false ...

Normal 0 false false false EN-IN X-NONE X-NONE

Explain about oral irrigation devices, Oral irrigation Devices The use ...

Oral irrigation Devices The use of oral irrigation devices has been controversial due to concerns about incomplete plaque removal and potential separation of connective issue f

The number of electrons in their outer energy level, The bonding geometry o...

The bonding geometry of C,O,N is determined by- Select one: a. The number of electrons in their outer energy level b. SP3 hybridization of orbitals in the valence shell

Sickle cell, Sickle cell anaemia in man is caused by a defective chain of h...

Sickle cell anaemia in man is caused by a defective chain of haemoglobin. The abnormal haemoglobin known as MbS differs from natural haemoglobin (HhA) in one amino acid. A substitu

Explain briefly protein hydrolysates, Explain Protein hydrolysates It i...

Explain Protein hydrolysates It is valued for their superior nutritional qualities, including increased bioavailability and reduced antigenecity. Several enzymatic modification

Plant physiology, application of apical dominace in horticulture and agricu...

application of apical dominace in horticulture and agriculture short notes

Water of estuaries, Water of Estuaries The water of estuaries is turbi...

Water of Estuaries The water of estuaries is turbid because of the great number of particulates in suspension in the water. The turbidity is minimum near the mouth and increas

What will be the most likely explanation, If a lipid bilayer does not form ...

If a lipid bilayer does not form in a test tube of phospholipids in a liquid solvent and instead the heads join together in a circular pattern, the most likely explanation is: a

What are the processes of the photochemical stage, What are the processes o...

What are the processes of the photochemical stage of the photosynthesis process? Photolysis of water, with liberation of molecular oxygen, and photophosphorylation of ADP, with

What is agamospermy, What is agamospermy? How is agamospermy dissimila...

What is agamospermy? How is agamospermy dissimilar from parthenogenesis and parthenocarpy? i. How can haploid plants be increased in the laboratory? ii. Name the plant f

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