3 public questions tagged with this topic.
Polar molecules cannot pass readily through the non-polar interior of the lipid bilayer. They therefore require membrane carrier proteins to facilitate their movement across the plasma membrane.
Ref: NCERT Class 11 Biology Chapter 8: Cell: The Unit of Life Eukaryotic Cell - Cell Wall and Cell Membrane - Fluid Mosaic Model
The plasma membrane is selectively permeable, allowing only certain molecules or ions to move across it. Substances may cross by passive transport, facilitated transport or active transport.
Ref: NCERT Class 11 Biology Chapter 8: Cell: The Unit of Life Cell Theory and Overview of Cell
Translocase is the accurate response regarding enzymatic activity or regulation described in this question. Enzymes are biological catalysts that accelerate reactions by lowering activation energy through specific substrate binding and transition state stabilization. In the context of Enzymes Basics, Translocase plays a specific catalytic or regulatory role determined by its active site configuration and mechanism of action. The other options (Oxidoreductase, Transferase, and Ligase) are either different enzymes with distinct substrate specificities, act through different mechanisms, or are involved in separate metabolic pathways.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 6
