1.Define the following terms: Akinete Taxospecies Phycobilisomes Heterocyst Methanogenesis Baeocytes Pseudomurein Trichome Geosmin 2. Which genera of Gram-negative bacteria are associated with plants...

Akinete Taxospecies

Phycobilisomes Heterocyst

Methanogenesis Baeocytes

Pseudomurein Trichome

Geosmin

2. Which genera of Gram-negative bacteria are associated with plants as nitrogen fixers and as pathogens? 3. In what ways do spirochetes differ from other bacteria?

4. Give the outstanding features of each of the following genera:

Bdellovibrio Hemophilus

Nocardia Agrobacterium

Epulopiscium Frankia

Sporolactobacillus Mycobacterium

Chlamydia

5. List the features of archaeobacteria that distinguish them from eubacteria.

6. What do you understand by an opportunistic pathogen? List four Gram-negative

bacteria that are opportunistic pathogens.