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

Define conjugation in brief, Define Conjugation in brief. A form of se...

Define Conjugation in brief. A form of sexual reproduction in ciliates (Ciliophora). During conjugation two ciliate protozoans join and macronuclei disappears. After meiotic d

Products of hemp plant, PRODUCT S OF HEMP PLANT - Four drugs - bhan...

PRODUCT S OF HEMP PLANT - Four drugs - bhang, ganja, charas & marijuana obtained from Cannabis indica and C. sativa of family Moraceae . Main alkaloid is tetrah

What are the main manifestations of leishmaniasis, Q. What are the main man...

Q. What are the main manifestations of leishmaniasis? There are two key forms of leishmaniasis: visceral leishmaniasis and cutaneous leishmaniasis (also known as kala-azar). Th

How auxins act helping the lateral growth of the stem, How auxins act helpi...

How auxins act helping the lateral (secondary) growth of the stem? The Auxins stimulate the formation of conductive vessels, phloem and xylem, promoting the thickening of the s

Describe chemical equation of photosynthesis?, Q. What is the chemical equa...

Q. What is the chemical equation of photosynthesis? The chemical equation of photosynthesis is given below: 6 CO 2 + 6 H 2 O + light --> C 6 H 12 O 6 + 6 O 2

Describe morphology of the embryo, Q. After the neurula stage and from its ...

Q. After the neurula stage and from its ventral portion to the dorsal how can the morphology of the embryo be described? In a schematic longitudinal section of the embryo after

CLASSIFICATION, WHY CORALS MAY SOMETIME BE CONFUSED WITH PLANT

WHY CORALS MAY SOMETIME BE CONFUSED WITH PLANT

What is parasitism, Q. What is parasitism? The Parasitism is the ecolog...

Q. What is parasitism? The Parasitism is the ecological interaction in which a being lives at the expense of another. The parasite often doesn't cause immediate death of the ho

Explain the diet prescription, The diet prescription The diet prescrip...

The diet prescription The diet prescription designates the type, amount and frequency of feeding based on an individual's disease process and disease management goals. The dis

Advantages of vegetative propagation, Advantages of vegetative propagation ...

Advantages of vegetative propagation Vegetative propagation helps to maintain fixed qualities and characteristic features of the parent plant. For Example in ornamental p

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