Lecture 7

Lecture 7 - Lecture 7: Prokaryote Structure and Functions...

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Lecture 7: Prokaryote Structure and Functions 1. Understand the range of sizes of prokaryotes 2. Know the different types of prokaryotic shapes and recognize how this is often included in a species name a. Spherical – coccus i. 2 spheres – diplococci ii. Chain of spheres – streptococci iii. 2 plains (4 touching spheres) – tetrad iv. 3 plains (forming a box) – sarcina v. Multiple plains – staphylococci b. Rod – bacillus i. 1 plain – diplobacilli ii. Chain – streptobacilli iii. Spherical rods – coccobacillus iv. Comer shaped – vibrio v. Slightly corkscrew shaped – spirillum vi. Very corkscrew shaped – spirochete 3. Know the basic structure of peptidoglycan and the major structural differences between the cell walls of Gram Negative and gram positive bacteria a. Gram Positive i. Inside – Plasma membrane ii. Outside – thick layer of peptidoglycan which has lipoteichoic acid and teichoic acid giving it structural integrity iii. 2 peptidoglycan monomers joined together by a string of peptide bonds
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This note was uploaded on 03/25/2010 for the course MB 351 taught by Professor Keen during the Spring '08 term at N.C. State.

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Lecture 7 - Lecture 7: Prokaryote Structure and Functions...

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