Why does the rate of diffusion of a substance | vedclass

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

Question

(C) The rate of diffusion of a substance along the concentration gradient does not increase continuously as the concentration difference increases in

Vedclass · Accepted Answer

$100 \%$ saturation of carrier protein after some time

Vedclass · Answer

(C) The rate of diffusion of a substance along the concentration gradient does not increase continuously as the concentration difference increases in the case of facilitated diffusion.This occurs because facilitated diffusion is mediated by specific carrier proteins.As the concentration gradient increases,the rate of transport increases initially,but it reaches a maximum limit when all available carrier proteins are occupied or saturated.Once the carrier proteins reach $100 \%$ saturation,the rate of transport cannot increase further,regardless of any additional increase in the concentration gradient.

Why does the rate of diffusion of a substance along the concentration gradient not increase continuously,even when the concentration difference of the molecules across the membrane increases?

Similar Questions

Identify $(i), (ii)$ and $(iii)$ based on the provided diagram of carrier proteins in a membrane.

Choose the correct sentences for diffusion:
$(1)$ In diffusion,molecules move in a random fashion.
$(2)$ Diffusion rates are affected by the gradient of concentration.
$(3)$ Diffusion is a slow process and is dependent on a 'living system'.
$(4)$ Movement by diffusion is passive.

Identify the processes occurring in $(I)$,$(II)$,and $(III)$ based on the provided diagram.

Identify a type of molecular movement which is highly selective and requires special membrane proteins,but does not require energy.

Mention the peculiarities of facilitated diffusion.

Vedclass Test Series

Exam Paper Generator

Online Exam Module