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WorksheetsProkaryote Diversity & Evolution
Total questions: 9
Worksheet time: 7mins
The first autotrophs were oxygenic.
True
False
Bacteria and archaea differ fundamentally in their...
Plasma membranes
Cell walls
DNA replication
All of the above
Which of the following metabolisms is NOT found in Archaea?
photosynthesis
chemolithotrophy
chemoorganotrophy
aerobic respiration
As studies continue to search for life in high-heat environments (e.g., black smokers and hot springs), it seems plausible there is no upper temperature limit for microbial life.
True
False
Which group in Bacteria lacks cell walls?
Corynebacterium
Mycoplasma
Sporosarcina
Tenericutes
Bioluminescence develops when...
population density is high
oxygen is depleted
ambient light is low
the host induces the bioluminescence genes
Cyanobacteria...
fix CO2 by the Calvin cycle
can fix N2
have specialized membranes called thylacoids
all of the above
When bacteria are exposed to nutrient-poor conditions, they form thick-walled structures that contain the chromosome and a small amount of cytoplasm. These structures are called...
plasmids
exospores
nucleoids
endospores
There are currently no known predatory bacteria that are adapted to invade or kill nearby cells...
True
False
