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

Determine some indicators of malnutrition, Determine Some indicators of Mal...

Determine Some indicators of Malnutrition? A few of the indicators are enumerated below: 1. Indicators related to Government policies a. Nutrition policy b. Nutrition

Aleurone grains, ALEURONE GRAINS - Also known as Plant lysosome , beca...

ALEURONE GRAINS - Also known as Plant lysosome , because they contain hydrolytic enzymes. Consists of Proteins. They are also known as Aleuroplast because they are ric

What is the energy efficiency of photosynthesis, What is the energy efficie...

What is the energy efficiency of photosynthesis? a) What area is occupied by each molecule? b) Calculate the molecular absorption cross section in units of A 2   A cr

Explain the term chemical score, Explain the term Chemical Score? Since...

Explain the term Chemical Score? Since egg proteins contain all essential amino acids in adequate amounts and possess the highest nutritive value among dietary proteins, Block

Life processes, mode of nutrition : out side the body

mode of nutrition : out side the body

Xylem transfer cells, Xylem transfer cells The lateral transport of io...

Xylem transfer cells The lateral transport of ions from root xylem to leaves probably takes place via xylem transfer cells which have two special features: The ce

Why are additives used in foods?, Normal 0 false false fal...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

How the required weight gain calculated, How the Required weight gain Calcu...

How the Required weight gain Calculated? Weight gain is another aspect deserving attention. 'Allowable' or recommended weight gain could be higher than for adults. The weight g

Explain about bt reassessment, Will the plant-incorporated protectants rule...

Will the plant-incorporated protectants rules affect the Bt reassessment? No. To make sure that our biotechnology assessments reflect the latest data on health and ecological e

What are dopaminergic neurons, Q. What are Dopaminergic neurons? Dopam...

Q. What are Dopaminergic neurons? Dopamine Dopaminergic neurons occur in two closely connected groups: Ventral tegmental area (VTA) of the midbrain and Substantia nigra,(i

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