Teaching MPPSC Assistant Professor Mock Test Series 2025 Life Sciences Cellular Organization Membrane structure and function
Which one of the following statements about the plasma membrane is INCORRECT?
1
The plasma membrane is selectively permeable, allowing some substances to pass while blocking others based on size, charge, and lipid solubility.
2
Integral membrane proteins can move laterally within the membrane but cannot flip-flop between the inner and outer leaflets without the assistance of specific enzymes.
3
Glycoproteins and glycolipids on the plasma membrane surface play a crucial role in cell-cell recognition and adhesion.
4
Proteins embedded in the plasma membrane are uniformly distributed, maintaining a consistent pattern across different types of cells.