Membrane proteins are the functional units of cell membrane.
举一反三
- The myelin sheath of the peripheral nerve consists of A: Schwann cell membrane and cytoplasm B: only Schwann cell cytoplasm C: multiple layers of Schwann cell membrane D: only the lipid of Schwann cell membrane E: Schwann cell membrane and basal lamina
- All cells have a cell membrane made of proteins and ( ). A: lipids B: glucose C: amino acid D: fructose
- Which of the following components of cell membrane is most likely to function as a receptor in cell-cell communication？ A: lipids B: cholesterols C: carbohydrates D: nucleic acids E: proteins
- The imbalance distribution of Na+ and K+ inside and outside the cell is due to () A: the high permeability of cell membrane to K+ in rest condition B: the increase of the permeability of the cell membrane to Na+ when excited C: the result that Na+ and K+ moving across the cell membrane by facilitated diffusion D: the effect of Na+ pump E: the effect of ATP
- The structure that constitutes the blood-testis barrier does not include A: capillary endothelium and basement membrane B: cell connection between spermatogonium C: tight juntion between sustentacular cell D: spermatogenic epithelial basement membrane