Ch. 24 Prokaryotes and Viruses

Eukaryotes are a specialized group of ______ that acquired a cell nucleus.  

• bacteria

• archaea

• protists

• fungi

What is true of all Archaea?

• Lack peptidoglycan in cell wall

• Have a membrane-enclosed nucleus

• Have chloroplasts

• Both A & B

Viruses are not cellular, but they

• Have DNA or RNA

• Infect all cellular forms of life

• Evolve independently

• All of the above

What bacteria group is being described?

•Very small, Gram-negative cocci; live only as parasites in cells of other organisms

•Can take up ATP from host cell with translocase

•Complex life cycle with two forms—elementary bodies and reticulate bodies

• Cyanobacteria

• Actinobacteria

• Chlamydias

• Spirochetes

Who is the father of microbiology?

• Marie Curie

• Alfred Wallace

• Albert Einstein

• Antonie van Leeuwenhoek

This type of organism has a chemical energy source and derives carbon from organic compounds.

• Chemoautotroph

• Chemoheterotroph

• Photoautotroph

• Photochemotroph

The gram stain results for these bacteria are:

• Positive

• Negative

What group of Archaea uses energy from H2; produces methane as waste; poisoned by O2.

• Nonextreme Archaea

• Extreme Thermophiles

• Extreme Halophiles

• Methanogens