MHT CET 202621 AprilMorning Shift
- Exam
- MHT CET
- Year
- 2026
- Date
- 21 April
- Shift
- Morning Shift
- Subject
- Biology
- Chapter
- Transport in Plants
MHT CET 2026 · 21 April · Morning Shift · Biology · Transport in Plants
Which of the following is NOT true with respect to facilitated...
Which of the following is NOT true with respect to facilitated diffusion ?
Options
- AIt is a passive process.
- BIt is mediated by a carrier protein.
- CCarrier proteins help move substances across membranes with the expenditure of energy.
- DConcentration gradient must be present for the molecules to be diffused through facilitated diffusion.
Correct answer
C. Carrier proteins help move substances across membranes with the expenditure of energy.
Step-by-step solution
Facilitated diffusion is a type of passive transport where molecules move across the cell membrane with the help of carrier or channel proteins.
Since it is a passive process, it occurs along the concentration gradient and does not require the expenditure of metabolic energy (ATP).
Therefore, the statement that carrier proteins help move substances across membranes with the expenditure of energy is incorrect.
Answer: Carrier proteins help move substances across membranes with the expenditure of energy.
Since it is a passive process, it occurs along the concentration gradient and does not require the expenditure of metabolic energy (ATP).
Therefore, the statement that carrier proteins help move substances across membranes with the expenditure of energy is incorrect.
Answer: Carrier proteins help move substances across membranes with the expenditure of energy.