Chapter 27: Bacteria and Archaea

  1. Prokaryote matching exercise

  2. Which one of the following groups of prokaryotes is classified as a member of the domain Archaea?
    1. gram-negative bacteria
    2. gram-positive bacteria
    3. cyanobacteria
    4. proteobacteria
    5. methanogens
  3. Bacteria may contain exotoxins which are secreted
    1. lipids.
    2. sugars.
    3. proteins.
    4. DNA.
    5. RNA.
  4. Nitrogen fixing bacteria can convert nitrogen into
    1. ammonia.
    2. amino acids.
    3. nucleotides.
    4. carbon dioxide.
    5. hydrogen.
  5. Streptococcus has a ________ shape.
    1. spherical
    2. rod
    3. spiral
    4. cubic
    5. hexagonal
  6. The prokaryotic genome is usually a circular ring of DNA located in a ________ region.
    1. plasmid
    2. plastid
    3. capsid
    4. nucleoid
    5. nuclear
  7. A clade of prokaryotes that live in extreme environments is classified as
    1. proteobacteria
    2. cyanobacteria.
    3. archaea
    4. fungi.
    5. protista.