Which of the following statements is incorrect regarding facilitated diffusion?

  • A
    Facilitated diffusion occurs for lipid-soluble molecules.
  • B
    Facilitated diffusion occurs with the help of special membrane proteins.
  • C
    Proteins do not establish a concentration gradient; a concentration gradient must already be present.
  • D
    Facilitated diffusion occurs along the concentration gradient.

Explore More

Similar Questions

Identify the following process and choose the correct option.

$A-$ In an antiport,both molecules move in opposite directions.
$R -$ In symport,only one molecule crosses the membrane in the same direction.

Match the following columns correctly:
Column-$I$Column-$II$
$(a)$ Passive transport$(p)$ Movement from higher concentration to lower concentration, no energy required
$(b)$ Active transport$(q)$ Movement along the concentration gradient, requiring carrier proteins
$(c)$ Facilitated diffusion$(r)$ Movement against the concentration gradient, requiring energy
$(d)$ Osmosis$(s)$ Diffusion of solvent molecules across a semi-permeable membrane

Transport against the concentration gradient is known as:

Give the definition of diffusion and write its properties.

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo