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Prokaryote Questions

(Answers way down at the bottom)

A. Bacteria participate in

  1. digestion in animals
  2. processing nitrogen and sulfur in soils.
  3. decomposition in all ecosystems
  4. many industrial and commercial processes.
  5. All of the above

B. Which of the following nutritional categories of bacteria can exist independently of other organisms?

  1. Photoautotrophs
  2. Photoheterotrophs
  3. Photochemotrophs
  4. Chemoheterotrophs

C. Which of the following is a broad nutritional category of bacteria that is recognized by biologists?

  1. Physioautotrophs
  2. Heteroautotrophs
  3. Chemoautotrophs
  4. a and b
  5. a and c

D. Which of the following characteristics is/are unique to prokaryotes?

  1. Lack of membrane bound organelles
  2. Presence of cell walls
  3. Plasma membranes
  4. Occur as endosymbionts
  5. All of the above

E. A bacterium that requires an organic carbon source, yet can oxidize inorganic chemicals as a source of energy is called a

  1. photoautotroph
  2. photoheterotroph
  3. chemoautotroph
  4. chemoheterotroph

F. Which of the following have prokaryotic cell construction:

  1. plants
  2. animals
  3. archaea
  4. viruses
  5. fungi

H. Life arose on earth approximately how many years ago?

  1. 3.8 billion
  2. 3.8 million
  3. 4000
  4. 1.5 billion

I. The division of all living organisms into the three major domains (Bacteria, Archaea, and Eukarya) is based on

  1. direct fossil evidence from each group
  2. the existence of a common ancestor
  3. recent advances in our ability to obtain and analyze molecular evidence from existing species
  4. methods to determine the proportions of radioactive and stable isotopes in rocks
  5. visible differences between organisms found in each of the three domains

K. Which of the following lists places major events in the history of life in proper order?

  1. prokaryotes appear, oxygen-rich atmosphere appears, eukaryotes appear, multicellular organisms appear, life on land appears
  2. prokaryotes appear, eukaryotes appear, oxygen-rich atmosphere appears, multicellular organisms appear, life on land appears
  3. prokaryotes appear, oxygen-rich atmosphere appears, eukaryotes appear, life on land appears, multicellular organisms appear
  4. prokaryotes appear, eukaryotes appear, multicellular organisms appear, oxygen-rich atmosphere appears, life on land appears

N. In order to convert CO2 to C(H2O),

  1. energy must be used
  2. energy must be dissipated (lost)
  3. energy is neither used nor gained

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Answers: A5, B1, C3, D1, E4, F3, H1, I3, K1, N1

modified 9/23/04