All cells are enclosed by a plasma membrane, which separates the inside of the cell from its environment.
举一反三
- In the following cells, which cell is derived from monocytes A: fibroblast B: macrophage C: mast cell D: plasma cell E: fat cell
- All cells have a cell membrane made of proteins and ( ). A: lipids B: glucose C: amino acid D: fructose
- The envelope of an animal virus is derived from the____of its host cell.( ) A: cell wall B: cell membrane C: glycolyx D: receptors
- Somtehing that situated or occurring inside a cell or cells is called____
- If the concentration of a solution outside a cell is less concentrated than inside the cell so that the cell gains water to its environment, the outside solution is said to be ____ to the cell contents. A: hypertonic B: in equilibrium C: isotonic D: hypotonic