最新微生物学第一章细菌的形态与结构PPT课件.ppt
《最新微生物学第一章细菌的形态与结构PPT课件.ppt》由会员分享,可在线阅读,更多相关《最新微生物学第一章细菌的形态与结构PPT课件.ppt(42页珍藏版)》请在淘文阁 - 分享文档赚钱的网站上搜索。
1、微生物学第一章细菌的形态微生物学第一章细菌的形态与结构与结构Department of Microbiology,Harbin Medical UniversityDepartment of Microbiology,Harbin Medical University张文莉细菌(bacterium)概况n概念:u广义:泛指各类原核细胞型微生物包括细菌、放线菌、支原体、衣原体、立克次体、螺旋体 u狭义:专指细菌指真细菌(eubacteria)的一种,即通常所说的细菌Department of Microbiology,Harbin Medical UniversityDepartment of
2、Microbiology,Harbin Medical University张文莉Department of Microbiology,Harbin Medical UniversityDepartment of Microbiology,Harbin Medical University张文莉Department of Microbiology,Harbin Medical UniversityDepartment of Microbiology,Harbin Medical University张文莉Department of Microbiology,Harbin Medical Uni
3、versityDepartment of Microbiology,Harbin Medical University张文莉Department of Microbiology,Harbin Medical UniversityDepartment of Microbiology,Harbin Medical University张文莉Department of Microbiology,Harbin Medical UniversityDepartment of Microbiology,Harbin Medical University张文莉Department of Microbiolo
4、gy,Harbin Medical UniversityDepartment of Microbiology,Harbin Medical University张文莉革兰阳性菌细胞壁的肽聚糖结构Department of Microbiology,Harbin Medical UniversityDepartment of Microbiology,Harbin Medical University张文莉革兰阴性菌细胞壁的肽聚糖结构Department of Microbiology,Harbin Medical UniversityDepartment of Microbiology,Har
5、bin Medical University张文莉G+菌与G-菌肽聚糖结构比较Department of Microbiology,Harbin Medical UniversityDepartment of Microbiology,Harbin Medical University张文莉革兰阳性菌细胞壁结构肽聚糖(1550)磷壁酸 壁磷壁酸 膜磷壁酸特殊表面蛋白(某些细菌)Department of Microbiology,Harbin Medical UniversityDepartment of Microbiology,Harbin Medical University张文莉革兰阴
6、性菌细胞壁结构肽聚糖层肽聚糖层(12)外膜外膜 脂蛋白脂蛋白 脂质双层脂质双层 脂多糖脂多糖 脂质脂质A 核心多糖核心多糖 特异多糖特异多糖Department of Microbiology,Harbin Medical UniversityDepartment of Microbiology,Harbin Medical University张文莉G+菌与G-菌细胞壁结构比较Department of Microbiology,Harbin Medical UniversityDepartment of Microbiology,Harbin Medical University张文莉G+
7、菌与G-菌细胞壁结构比较细胞壁结构细胞壁结构G+菌菌G-菌菌强度强度坚韧坚韧疏松疏松厚度厚度(2080nm)厚厚(1015nm)薄薄肽聚糖层数、含量肽聚糖层数、含量(1550)多多(12)少少糖类含量糖类含量多多少少脂类含量脂类含量少少多多磷壁酸磷壁酸+-外膜外膜-+Department of Microbiology,Harbin Medical UniversityDepartment of Microbiology,Harbin Medical University张文莉Department of Microbiology,Harbin Medical UniversityDepartm
8、ent of Microbiology,Harbin Medical University张文莉细胞壁的功能n维持菌体外形n抵抗低渗环境 n营养摄取和物质交换n抗原性 n与致病性有关Department of Microbiology,Harbin Medical UniversityDepartment of Microbiology,Harbin Medical University张文莉细胞壁缺陷型(细菌L型)n细胞壁肽聚糖结构受到理化或生物因素直接破坏或合成被抑制的细菌在高渗环境下仍能够存活者 原生质体 protoplast 原生质球 spheroplast n高度多形性、染色不均、营
9、养要求高、生长缓 慢、油煎蛋状菌落、可回复原菌、可仍有致病性等n某些L型引起慢性感染Department of Microbiology,Harbin Medical UniversityDepartment of Microbiology,Harbin Medical University张文莉细胞膜(cell membrane)n半透性薄膜n功能u渗透和运输作用u分泌水解酶 u呼吸作用u生物合成u参与细菌分裂Department of Microbiology,Harbin Medical UniversityDepartment of Microbiology,Harbin Medica
10、l University张文莉Department of Microbiology,Harbin Medical UniversityDepartment of Microbiology,Harbin Medical University张文莉核质(nuclear material)n双股环状DNA分子组成n球形、棒状或哑状n化学组成uDNA,RNA和蛋白质Department of Microbiology,Harbin Medical UniversityDepartment of Microbiology,Harbin Medical University张文莉细胞质/浆(cytopla
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 最新 微生物学 第一章 细菌 形态 结构 PPT 课件
限制150内