Q27 / 200 · MHT CET - Medical 2026 (21 April Shift 2) · Biology

Which one of the following statements is correct?
Statement (I): Faciliated diffusion is an active absorption which require membrane protein.
Statement (II): Faciliated diffusion occurs with the help of Aquaporins and ion channels.

  • A
    Statement I only
  • Correct answer
    B
    Statement II only
  • C
    Both statement I and II
  • D
    Neither statement I nor statement II

Solution

Statement (I) is incorrect because facilitated diffusion is a passive process, not an active absorption. It occurs along the concentration gradient and does not require energy (ATP), although it does require membrane proteins.

Statement (II) is correct because facilitated diffusion of water and ions occurs with the help of specific channel proteins like aquaporins and ion channels, respectively.

Therefore, only Statement II is correct.

Answer: Statement II only

Hence, the correct answer is option: 'B'.

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