As pointed out earlier, a gradient must already be present for diffuegt, occur. The diffusion rate depends on the size of the substances; obyon smaller substances diffuse faster. The diffusion of any substance agref membrane also depends on its solubility in lipids, the major constitumege the membrane. Substances soluble in lipids diffuse through the memberseng faster. Substances that have a hydrophilic moiety, find it difficult topenter through the membrane; their movement has to be facilitated. Membrach proteins provide sites at which such molecules cross the membrane. do not set up a concentration gradient: a concentration gradient minix already be present for molecules to diffuse even if facilitated by the prot et This process is called facilitated diffusion.
In facilitated diffusion special proteins help move substances across membranes without expenditure of ATP energy. Facilitated diffusiont cannot cause net transport of molecules from a low to a high concentration - this would require input of energy. Transport rate reaches a maximum when all of the protein transporters are being used (saturation). Facilitatisi

Question

As pointed out earlier, a gradient must already be present for diffuegt, occur. The diffusion rate depends on the size of the substances; obyon smaller substances diffuse faster. The diffusion of any substance agref membrane also depends on its solubility in lipids, the major constitumege the membrane. Substances soluble in lipids diffuse through the memberseng  faster. Substances that have a hydrophilic moiety, find it difficult topenter  through the membrane; their movement has to be facilitated. Membrach proteins provide sites at which such molecules cross the membrane. do not set up a concentration gradient: a concentration gradient minix already be present for molecules to diffuse even if facilitated by the prot et This process is called facilitated diffusion.
In facilitated diffusion special proteins help move substances across membranes without expenditure of ATP energy. Facilitated diffusiont cannot cause net transport of molecules from a low to a high concentration - this would require input of energy. Transport rate reaches a maximum when all of the protein transporters are being used (saturation). Facilitatisi

Filo · Accepted Answer

Video solution available for this question. Click here.

Question Text	As pointed out earlier, a gradient must already be present for diffuegt, occur. The diffusion rate depends on the size of the substances; obyon smaller substances diffuse faster. The diffusion of any substance agref membrane also depends on its solubility in lipids, the major constitumege the membrane. Substances soluble in lipids diffuse through the memberseng $faster. Substances that have a hydrophilic moiety, find it difficult topenter$ through the membrane; their movement has to be facilitated. Membrach proteins provide sites at which such molecules cross the membrane. do not set up a concentration gradient: a concentration gradient minix already be present for molecules to diffuse even if facilitated by the prot et This process is called facilitated diffusion. In facilitated diffusion special proteins help move substances across membranes without expenditure of ATP energy. Facilitated diffusiont cannot cause net transport of molecules from a low to a high concentration - this would require input of energy. Transport rate reaches a maximum when all of the protein transporters are being used (saturation). Facilitatisi
Updated On	Apr 20, 2022
Topic	Plant Physiology
Subject	Biology
Class	Class 12
Answer Type	Video solution: 1
Upvotes	110
Avg. Video Duration	3 min

Filo tutor solutions (1)

Practice more questions on Plant Physiology

Students who ask this question also asked