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AIIMS 2010
Exam
AIIMS
Year
2010
Subject
Botany
Chapter
Transport in Plants

AIIMS 2010 · Botany · Transport in Plants

What is correct about the movement of substance across the membrane...

What is correct about the movement of substance across the membrane in facilitated diffusion?

Options

  1. AIt is an active transport.
  2. BIt doesn't cause transport of molecules from low concentration to high concentration.
  3. CIt is insensitive to inhibitors.
  4. DIt is a very specific transport.

Correct answer

D. It is a very specific transport.

Step-by-step solution

In facilitated diffusion special proteins help move substances across membranes along the concentration gradient without expenditure of energy. Facilitated diffusion is very specific, it allows cell to select substances for uptake. It is sensitive to inhibitors which react with protein side chains.
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