糖被（glycocalyx）

名词解释：glycocalyx A: 去垢剂 B: 磷脂酰胆碱 C: 双分子层 D: 糖被

The envelope of an animal virus is derived from the ( ) of its host cell. A: cell wall B: membrane C: glycocalyx D: receptors

Which of the following is not a function of a glycocalyx? A: It forms pseudopods for faster mobility of an organism. B: It can protect a bacterial cell from drying out. C: It protects a bacterial cell from killing by phagocytes. D: It allows a bacterium to stick to a host.