An Flashcards
(36 cards)
What are eubacteria commonly referred to as?
True bacteria
What characterizes eubacteria?
Presence of a rigid cell wall and flagellum if motile
What are cyanobacteria also known as?
Blue-green algae
What type of organisms are cyanobacteria?
Photosynthetic autotrophs
What type of chlorophyll do cyanobacteria have?
Chlorophyll a
What forms can cyanobacteria take?
Unicellular, colonial, or filamentous
Where can cyanobacteria be found?
Freshwater, marine, or terrestrial environments
What surrounds the colonies of cyanobacteria?
Gelatinous sheath
What phenomenon do cyanobacteria often cause in polluted water bodies?
Blooms
What specialized cells can some cyanobacteria use to fix atmospheric nitrogen?
Heterocysts
Give two examples of cyanobacteria that can fix nitrogen.
- Nostoc
- Anabaena
What do chemosynthetic autotrophic bacteria oxidize?
Various inorganic substances such as nitrates, nitrites, and ammonia
What is the role of chemosynthetic autotrophic bacteria in nutrient recycling?
They recycle nutrients like nitrogen, phosphorus, iron, and sulfur
What type of bacteria are most abundant in nature?
Heterotrophic bacteria
What is the primary role of heterotrophic bacteria?
Decomposers
How do heterotrophic bacteria impact human affairs?
Helpful in making curd from milk and production of antibiotics
Fill in the blank: Cyanobacteria are also known as _______.
blue-green algae
True or False: All eubacteria are motile.
False
What are eubacteria commonly referred to as?
True bacteria
What characterizes eubacteria?
Presence of a rigid cell wall and flagellum if motile
What are cyanobacteria also known as?
Blue-green algae
What type of organisms are cyanobacteria?
Photosynthetic autotrophs
What type of chlorophyll do cyanobacteria have?
Chlorophyll a
What forms can cyanobacteria take?
Unicellular, colonial, or filamentous
