Membrane proteins are the functional units of cell membrane.

Taking hollow fiber membrane module as an example, according to the way of water inflow, it can be classified as outside-in type: raw water enters from the outside of membrane, and purified water flows out from the inside of membrane. On the contrary, it is inside-out type. The working pressure of the inside-out type is higher than that of the outside-in type.

Taking hollow fiber membrane module as an example, according to the way of water inflow, it can be classified as outside-in type: raw water enters from the outside of membrane, and purified water flows out from the inside of membrane. On the contrary, it is inside-out type. The working pressure of the inside-out type is higher than that of the outside-in type. A: 正确 B: 错误

Which of the following is FALSE about the nuclear envelope? A: It is not present in prokaryotic cells. B: It separates the contents of the nucleus from the cytoplasm. C: It consists of an outer nuclear membrane and an inner nuclear membrane. D: It is continuous with the Golgi apparatus.

Chemiosmosis involves A: the movement of electrons across the cell membrane. B: the movement of hydrogen atoms across a mitochondrial membrane. C: the movement of hydrogen ions across a mitochondrial membrane. D: the movement of glucose through the cell membrane.

Where can pericyte be found？ A: Between the small artery endothelium and basement membrane B: Between the arteriole endothelium and basement membrane C: Between the capillary endothelium and basement membrane D: Outside the capillary basement membrane E: Between the lymphatic capillary endothelium and basement membrane

Filtration membrane

biological membrane

对比外在膜蛋白(extrinsic membrane protein)与内在膜蛋白(intrinsic membrane protein)

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