The transport rate reaches a maximum when:

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Facilitated diffusion is a process that requires specific membrane proteins to move molecules across the cell membrane.Because the number of these

Vedclass · Accepted Answer

All of the protein transporters are being used.

Vedclass · Answer

(B) Facilitated diffusion is a process that requires specific membrane proteins to move molecules across the cell membrane.Because the number of these protein transporters is limited,the transport rate increases with an increase in the concentration gradient up to a point.Once all the protein transporters are saturated (i.e.,all are occupied by substrate molecules),the transport rate reaches its maximum and cannot increase further,even if the concentration gradient is increased.This phenomenon is known as saturation kinetics.

Property	Simple Diffusion	Facilitated Transport	Active Transport
Transport Saturation	$P$	Yes	Yes
Uphill Transport	No	No	$Q$
Requirement of Energy	No	$R$	Yes

Property	Simple Diffusion	Facilitated Transport	Active Transport
Requires special membrane proteins	No	$a$	Yes
Transport saturates	No	Yes	$b$
Uphill transport	$c$	No	Yes
Requires $ATP$ energy	No	No	$d$

Similar Questions

What is mandatory in the process of facilitated diffusion?

In a passive transport across a membrane,when two protein molecules move in opposite directions and independent of each other,it is called as $.......$

Compare various transport processes.

Choose the correct option for $P, Q$ and $R$.
Property Simple Diffusion Facilitated Transport Active Transport
Transport Saturation $P$ Yes Yes
Uphill Transport No No $Q$
Requirement of Energy No $R$ Yes

$P, Q$ and $R$ respectively are:

Vedclass Test Series

Exam Paper Generator

Online Exam Module